Java虚拟机是如何加载Java类的？ 这个问题也就是面试常问到的Java类加载机制。在年初面试百战之后，菜鸟喜鹊也是能把这流程倒背如流啊！但是，也只是字面上的背诵，根本就是像上学时背书考试一样。
tonight ！ 我们把它映射到实战里，看看如何用代码说明这个流程。
ready! go! ----------------在这之前还是搞点理论吧，不然又要先去百度加载机制流程了。
一、类加载机制（理论部分）
类加载机制有三大过程：加载、链接、初始化。其中链接又细分为验证、准备及解析。
Java语言的类型分为两大类：基本类型和引用类型。Java的基本类型是由Java虚拟机预先定义好的。而引用类型又分为：数组类、类、接口、泛型参数。在JVM中，只存在数组类、类、接口三类，而数组类是直接由Java虚拟机直接生成的，其他两类则有字节流而来。
字节流又是怎么来呢？最常见的还是从字节码文件而来（还可以从网络等而来）。所以，我就以字节码文件分析一下加载机制。
1.加载
加载是指查找字节流，并据此创建类的过程。对于数组类来说，它们是可以由Java虚拟机直接生成。而其他两类，却需要借助类加载器，Java虚拟机才能完成查找字节流的工作。
类加载器与类的关系就像是UI与效果图一样，需要将业务需求翻译成效果图。美丽的UI就是类加载器，效果图就是类。
类加载器有一个模型：双亲委派。
双亲委派模型是每次收到类加载请求时，先将请求委派给父类加载器完成，如果父类加载器无法完成加载，那么子类尝试自己加载
类加载器分为三种，启动类加载器、扩展类加载器、应用类加载器。
其中，
启动类加载器（Application ClassLoader）是负责加载最为基础、最为重要的类，即加载<JAVA_HOME>\lib目录下核心库
扩展类加载器的父类加载器是启动类加载器，扩展类加载器负责加载相对次要、但又通用的类，即加载<JAVA_HOME>\lib\ext目录下扩展包
应用类加载器的父类加载器是扩展类加载器，应用类加载器负责加载应用程序路径下的类，即用户路径(classpath)上指定的类库
这三者类加载器的关系可以这样描述：
每当类加载器接收到加载请求时，它会先将请求转发给父类加载器，在父类加载器中没有找到需要的类的情况下，该加载器才会尝试去加载。
比如，应用加载器接收到加载请求， 会先去找父类加载器（扩展类加载器）里有没有需要的类，但该扩展类加载器顶头还有父类加载器（启动类加载器）， 所以还要去启动类加载器中查找是否存在需要的类，如果不存在，那扩展类加载器就会自己加载需要的类，然后把引用传递给应用加载器。
类加载器还有一个功能，就是提供命名空间的作用。
在Java虚拟机中，类的唯一性是由类加载器实例以及类的全名一同确定的。即便是同一串字节流，经过不同的类加载器加载，也会得到两个不同的类。（这里可以读者自己实现一下，用两个扩展类加载器加载同一个类，然后打印一下类信息就可以验证了）
2.链接
链接：将创建成的类合并至Java虚拟机中，使之能够执行的过程。（这里是下面代码要验证一个步骤）
链接分为验证、准备、解析。
验证的目的是为了让被加载的类能够满足Java虚拟机的约束。（关于约束条件，今天暂时不讲。）
准备的目的是为了被加载类的静态字段分配内存。（仅仅是分配内存，并没有在内存中写东西）除此之外，有些Java虚拟机还会用来实现虚方法的动态绑定的方法表。
下一步就是我们链接的重要步骤--解析
对于一个方法的调用，编译器会解析一个符号，这个符号能够无歧义地定位到具体的目标上。这个符号包含目标方法所在类的名字、目标方法的名字、接收的参数类型以及返回值类型的符号引用。
如果符号引用指向一个未被加载的类、字段、方法，那么这个解析将触发加载功能。
3.初始化
初始化：为标记为常量值的字段赋值，以及执行<clinit>方法的过程。
只有初始化完成之后，类才正式成为可执行的状态。
那初始化这个步骤是什么时候执行呢？
JVM规范枚举了下述多种触发初始化的情况：
理论部分讲解完了。（参考链接：https://time.geekbang.org/column/article/11523）
二、类加载机制（Linux查看字节码）
在这，主要是因为网上都是一大串的理论描述，看得也是半信半疑。还不如拿出代码来，让自己也心服口服了。
talk is cheap,show the code!
1.classloader
输出如下：
结果很惊人，为什么父类加载器的父类加载器（我自己取名为爷爷类加载器。。），照理论来说，应该打印的是bootstrapClassLoader。 其实是它隐身了。贴一下代码里的一段注释：
* Returns the parent class loader for delegation. Some implementations may
* use <tt>null</tt> to represent the bootstrap class loader. This method
* will return <tt>null</tt> in such implementations if this class loader‘s
* parent is the bootstrap class loader.
翻译黄色的句子就是：如果父类加载器是启动类加载器，则将返回null
但还是没解决怎么找bootstrapClassLoader啊。
它实际上不是 java.lang.ClassLoader的子类，而是由JVM自身实现的，我们可以通过这个方法得到实现的类路径。
URL[] urls=sun.misc.Launcher.getBootstrapClassPath().getURLs();
2.链接
3.初始化
1.编译的单例类：Singleton.java
public class Singleton{ private Singleton(){} private static class LazyHolder{ static final Singleton INSTANCE = new Singleton(); static{ System.out.println("LazyHolder.<clinit>"); } } public static Object getInstance(boolean flag){ if(flag) return new LazyHolder[2]; return LazyHolder.INSTANCE; } public static void main(String... args){ System.out.println("---"); getInstance(true); System.out.println("---"); getInstance(false); } }
2.编译并运行
[root@localhost tmp3]# javac Singleton.java [root@localhost tmp3]# java Singleton --- --- LazyHolder.<clinit>
3.查看字节码文件（用的新指令：java -verbose:class Singleton）
结合2,3的输出，我想，我该讲点啥。
在两段“-----”中，如果没有打印加载信息，我们就以为是连续输出了。但是并没有。根据加载信息来看，中间还会加载Singleton$LazyHolder这个内部类，而这一步，对应的就是getInstance(true)；。说明了啥？说明了前面理论部分的链接的最后一句话：
如果符号引用指向一个未被加载的类、字段、方法，那么这个解析将触发加载功能。
这里注意的是，仅仅调用了加载功能而已，这里只完成了创建类而已，并没有让它继续进行链接和初始化功能。所以在这里，也就不会出现打印“LazyHolder.<clinit>”的字样。
当使用到了getInstance(true)的时候，由于需要使用到“LazyHolder.INSTANCE;”这个静态常量，而它又与new 构造器方法相连通，此时就满足了理论中初始化的解释：
2.当遇到用以新建目标类实例的new指令时，初始化new指令的目标类
3.当遇到访问静态字段的指令时，初始化该静态字段所在的类
在这，大家应该也有疑问：getInstance(false)的时候也有new啊。但是，false时候的new，只是new数组，数组里装的只是加载时候生成的类引用。
大家还可以看下面class字节码就知道，注释那里就标记着很清楚是类引用而已。
Singleton.class
public static java.lang.Object getInstance(boolean); descriptor: (Z)Ljava/lang/Object; flags: ACC_PUBLIC, ACC_STATIC Code: stack=1, locals=1, args_size=1 0: iload_0 1: ifeq 9 4: iconst_2 5: anewarray #3 // class Singleton$LazyHolder 8: areturn 9: getstatic #4 // Field Singleton$LazyHolder.INSTANCE:LSingleton; 12: areturn LineNumberTable: line 11: 0 line 12: 9 StackMapTable: number_of_entries = 1 frame_type = 9 /* same */ public static void main(java.lang.String...); descriptor: ([Ljava/lang/String;)V flags: ACC_PUBLIC, ACC_STATIC, ACC_VARARGS Code: stack=2, locals=1, args_size=1 0: getstatic #5 // Field java/lang/System.out:Ljava/io/PrintStream; 3: ldc #6 // String --- 5: invokevirtual #7 // Method java/io/PrintStream.println:(Ljava/lang/String;)V 8: iconst_1 9: invokestatic #8 // Method getInstance:(Z)Ljava/lang/Object; 12: pop 13: getstatic #5 // Field java/lang/System.out:Ljava/io/PrintStream; 16: ldc #6 // String --- 18: invokevirtual #7 // Method java/io/PrintStream.println:(Ljava/lang/String;)V 21: iconst_0 22: invokestatic #8 // Method getInstance:(Z)Ljava/lang/Object; 25: pop 26: return LineNumberTable: line 15: 0 line 16: 8 line 17: 13 line 18: 21 line 19: 26 Singleton(Singleton$1); descriptor: (LSingleton$1;)V flags: ACC_SYNTHETIC Code: stack=1, locals=2, args_size=2 0: aload_0 1: invokespecial #1 // Method "<init>":()V 4: return LineNumberTable: line 1: 0 }
可以看到，在getInstance中，那么#3 和#4 对应的是啥
现在，
看了例子之后，大家应该也对类加载机制有了一点点了解了吧。
附：java -verbose:class Singleton 显示的全部信息
1 [root@localhost tmp3]# java -verbose:class Singleton 2 [Opened /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 3 [Loaded java.lang.Object from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 4 [Loaded java.io.Serializable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 5 [Loaded java.lang.Comparable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 6 [Loaded java.lang.CharSequence from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 7 [Loaded java.lang.String from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 8 [Loaded java.lang.reflect.AnnotatedElement from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 9 [Loaded java.lang.reflect.GenericDeclaration from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 10 [Loaded java.lang.reflect.Type from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 11 [Loaded java.lang.Class from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 12 [Loaded java.lang.Cloneable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 13 [Loaded java.lang.ClassLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 14 [Loaded java.lang.System from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 15 [Loaded java.lang.Throwable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 16 [Loaded java.lang.Error from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 17 [Loaded java.lang.ThreadDeath from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 18 [Loaded java.lang.Exception from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 19 [Loaded java.lang.RuntimeException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 20 [Loaded java.lang.SecurityManager from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 21 [Loaded java.security.ProtectionDomain from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 22 [Loaded java.security.AccessControlContext from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 23 [Loaded java.security.SecureClassLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 24 [Loaded java.lang.ReflectiveOperationException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 25 [Loaded java.lang.ClassNotFoundException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 26 [Loaded java.lang.LinkageError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 27 [Loaded java.lang.NoClassDefFoundError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 28 [Loaded java.lang.ClassCastException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 29 [Loaded java.lang.ArrayStoreException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 30 [Loaded java.lang.VirtualMachineError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 31 [Loaded java.lang.OutOfMemoryError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 32 [Loaded java.lang.StackOverflowError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 33 [Loaded java.lang.IllegalMonitorStateException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 34 [Loaded java.lang.ref.Reference from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 35 [Loaded java.lang.ref.SoftReference from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 36 [Loaded java.lang.ref.WeakReference from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 37 [Loaded java.lang.ref.FinalReference from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 38 [Loaded java.lang.ref.PhantomReference from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 39 [Loaded sun.misc.Cleaner from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 40 [Loaded java.lang.ref.Finalizer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 41 [Loaded java.lang.Runnable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 42 [Loaded java.lang.Thread from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 43 [Loaded java.lang.Thread$UncaughtExceptionHandler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 44 [Loaded java.lang.ThreadGroup from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 45 [Loaded java.util.Map from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 46 [Loaded java.util.Dictionary from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 47 [Loaded java.util.Hashtable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 48 [Loaded java.util.Properties from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 49 [Loaded java.lang.reflect.AccessibleObject from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 50 [Loaded java.lang.reflect.Member from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 51 [Loaded java.lang.reflect.Field from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 52 [Loaded java.lang.reflect.Parameter from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 53 [Loaded java.lang.reflect.Executable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 54 [Loaded java.lang.reflect.Method from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 55 [Loaded java.lang.reflect.Constructor from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 56 [Loaded sun.reflect.MagicAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 57 [Loaded sun.reflect.MethodAccessor from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 58 [Loaded sun.reflect.MethodAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 59 [Loaded sun.reflect.ConstructorAccessor from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 60 [Loaded sun.reflect.ConstructorAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 61 [Loaded sun.reflect.DelegatingClassLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 62 [Loaded sun.reflect.ConstantPool from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 63 [Loaded sun.reflect.FieldAccessor from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 64 [Loaded sun.reflect.FieldAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 65 [Loaded sun.reflect.UnsafeFieldAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 66 [Loaded sun.reflect.UnsafeStaticFieldAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 67 [Loaded java.lang.annotation.Annotation from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 68 [Loaded sun.reflect.CallerSensitive from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 69 [Loaded java.lang.invoke.MethodHandle from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 70 [Loaded java.lang.invoke.DirectMethodHandle from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 71 [Loaded java.lang.invoke.MemberName from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 72 [Loaded java.lang.invoke.MethodHandleNatives from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 73 [Loaded java.lang.invoke.LambdaForm from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 74 [Loaded java.lang.invoke.MethodType from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 75 [Loaded java.lang.BootstrapMethodError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 76 [Loaded java.lang.invoke.CallSite from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 77 [Loaded java.lang.invoke.ConstantCallSite from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 78 [Loaded java.lang.invoke.MutableCallSite from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 79 [Loaded java.lang.invoke.VolatileCallSite from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 80 [Loaded java.lang.Appendable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 81 [Loaded java.lang.AbstractStringBuilder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 82 [Loaded java.lang.StringBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 83 [Loaded java.lang.StringBuilder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 84 [Loaded sun.misc.Unsafe from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 85 [Loaded java.lang.AutoCloseable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 86 [Loaded java.io.Closeable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 87 [Loaded java.io.InputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 88 [Loaded java.io.ByteArrayInputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 89 [Loaded java.io.File from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 90 [Loaded java.net.URLClassLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 91 [Loaded java.net.URL from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 92 [Loaded java.util.jar.Manifest from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 93 [Loaded sun.misc.Launcher from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 94 [Loaded sun.misc.Launcher$AppClassLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 95 [Loaded sun.misc.Launcher$ExtClassLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 96 [Loaded java.security.CodeSource from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 97 [Loaded java.lang.StackTraceElement from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 98 [Loaded java.nio.Buffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 99 [Loaded java.lang.Boolean from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 100 [Loaded java.lang.Character from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 101 [Loaded java.lang.Number from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 102 [Loaded java.lang.Float from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 103 [Loaded java.lang.Double from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 104 [Loaded java.lang.Byte from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 105 [Loaded java.lang.Short from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 106 [Loaded java.lang.Integer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 107 [Loaded java.lang.Long from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 108 [Loaded java.lang.NullPointerException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 109 [Loaded java.lang.ArithmeticException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 110 [Loaded java.io.ObjectStreamField from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 111 [Loaded java.util.Comparator from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 112 [Loaded java.lang.String$CaseInsensitiveComparator from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 113 [Loaded java.security.Guard from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 114 [Loaded java.security.Permission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 115 [Loaded java.security.BasicPermission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 116 [Loaded java.lang.RuntimePermission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 117 [Loaded java.security.AccessController from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 118 [Loaded java.lang.reflect.ReflectPermission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 119 [Loaded java.security.PrivilegedAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 120 [Loaded sun.reflect.ReflectionFactory$GetReflectionFactoryAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 121 [Loaded java.security.cert.Certificate from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 122 [Loaded java.lang.Iterable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 123 [Loaded java.util.Collection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 124 [Loaded java.util.List from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 125 [Loaded java.util.RandomAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 126 [Loaded java.util.AbstractCollection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 127 [Loaded java.util.AbstractList from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 128 [Loaded java.util.Vector from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 129 [Loaded java.util.Stack from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 130 [Loaded sun.reflect.ReflectionFactory from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 131 [Loaded java.lang.ref.Reference$Lock from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 132 [Loaded java.lang.ref.Reference$ReferenceHandler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 133 [Loaded java.lang.InterruptedException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 134 [Loaded java.util.ArrayList from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 135 [Loaded java.util.Collections from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 136 [Loaded java.util.Set from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 137 [Loaded java.util.AbstractSet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 138 [Loaded java.util.Collections$EmptySet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 139 [Loaded java.util.Collections$EmptyList from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 140 [Loaded java.util.AbstractMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 141 [Loaded java.util.Collections$EmptyMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 142 [Loaded java.util.Collections$UnmodifiableCollection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 143 [Loaded java.util.Collections$UnmodifiableList from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 144 [Loaded java.util.Collections$UnmodifiableRandomAccessList from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 145 [Loaded java.lang.ref.ReferenceQueue from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 146 [Loaded java.lang.ref.ReferenceQueue$Null from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 147 [Loaded java.lang.ref.ReferenceQueue$Lock from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 148 [Loaded sun.misc.JavaLangRefAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 149 [Loaded java.lang.ref.Reference$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 150 [Loaded sun.misc.SharedSecrets from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 151 [Loaded java.lang.IncompatibleClassChangeError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 152 [Loaded java.lang.NoSuchMethodError from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 153 [Loaded sun.reflect.Reflection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 154 [Loaded java.util.HashMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 155 [Loaded java.util.Map$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 156 [Loaded java.util.HashMap$Node from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 157 [Loaded sun.misc.VM from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 158 [Loaded java.util.Hashtable$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 159 [Loaded java.lang.Math from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 160 [Loaded java.lang.ref.Finalizer$FinalizerThread from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 161 [Loaded java.nio.charset.Charset from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 162 [Loaded java.nio.charset.spi.CharsetProvider from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 163 [Loaded sun.nio.cs.FastCharsetProvider from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 164 [Loaded sun.nio.cs.StandardCharsets from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 165 [Loaded sun.util.PreHashedMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 166 [Loaded sun.nio.cs.StandardCharsets$Aliases from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 167 [Loaded sun.nio.cs.StandardCharsets$Classes from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 168 [Loaded sun.nio.cs.StandardCharsets$Cache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 169 [Loaded java.lang.ThreadLocal from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 170 [Loaded java.util.concurrent.atomic.AtomicInteger from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 171 [Loaded java.lang.Class$3 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 172 [Loaded java.lang.Class$ReflectionData from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 173 [Loaded java.lang.Class$Atomic from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 174 [Loaded sun.reflect.generics.repository.AbstractRepository from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 175 [Loaded sun.reflect.generics.repository.GenericDeclRepository from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 176 [Loaded sun.reflect.generics.repository.ClassRepository from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 177 [Loaded java.lang.Class$AnnotationData from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 178 [Loaded sun.reflect.annotation.AnnotationType from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 179 [Loaded java.util.WeakHashMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 180 [Loaded java.lang.ClassValue$ClassValueMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 181 [Loaded java.lang.reflect.Modifier from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 182 [Loaded sun.reflect.LangReflectAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 183 [Loaded java.lang.reflect.ReflectAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 184 [Loaded java.util.Arrays from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 185 [Loaded sun.nio.cs.HistoricallyNamedCharset from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 186 [Loaded sun.nio.cs.Unicode from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 187 [Loaded sun.nio.cs.UTF_8 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 188 [Loaded java.lang.Class$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 189 [Loaded sun.reflect.ReflectionFactory$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 190 [Loaded sun.reflect.NativeConstructorAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 191 [Loaded sun.reflect.DelegatingConstructorAccessorImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 192 [Loaded java.lang.StringCoding from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 193 [Loaded java.lang.ThreadLocal$ThreadLocalMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 194 [Loaded java.lang.ThreadLocal$ThreadLocalMap$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 195 [Loaded java.lang.StringCoding$StringDecoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 196 [Loaded sun.nio.cs.ArrayDecoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 197 [Loaded java.nio.charset.CharsetDecoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 198 [Loaded sun.nio.cs.UTF_8$Decoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 199 [Loaded java.nio.charset.CodingErrorAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 200 [Loaded java.util.Hashtable$EntrySet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 201 [Loaded java.util.Collections$SynchronizedCollection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 202 [Loaded java.util.Collections$SynchronizedSet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 203 [Loaded java.util.Objects from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 204 [Loaded java.util.Enumeration from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 205 [Loaded java.util.Iterator from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 206 [Loaded java.util.Hashtable$Enumerator from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 207 [Loaded java.lang.Runtime from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 208 [Loaded sun.misc.Version from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 209 [Loaded java.io.FileInputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 210 [Loaded java.io.FileDescriptor from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 211 [Loaded sun.misc.JavaIOFileDescriptorAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 212 [Loaded java.io.FileDescriptor$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 213 [Loaded java.io.Flushable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 214 [Loaded java.io.OutputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 215 [Loaded java.io.FileOutputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 216 [Loaded java.io.FilterInputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 217 [Loaded java.io.BufferedInputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 218 [Loaded java.util.concurrent.atomic.AtomicReferenceFieldUpdater from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 219 [Loaded java.util.concurrent.atomic.AtomicReferenceFieldUpdater$AtomicReferenceFieldUpdaterImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 220 [Loaded java.security.PrivilegedExceptionAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 221 [Loaded java.util.concurrent.atomic.AtomicReferenceFieldUpdater$AtomicReferenceFieldUpdaterImpl$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 222 [Loaded sun.reflect.misc.ReflectUtil from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 223 [Loaded java.io.FilterOutputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 224 [Loaded java.io.PrintStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 225 [Loaded java.io.BufferedOutputStream from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 226 [Loaded java.io.Writer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 227 [Loaded java.io.OutputStreamWriter from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 228 [Loaded sun.nio.cs.StreamEncoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 229 [Loaded sun.security.action.GetPropertyAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 230 [Loaded sun.nio.cs.ArrayEncoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 231 [Loaded java.nio.charset.CharsetEncoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 232 [Loaded sun.nio.cs.UTF_8$Encoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 233 [Loaded java.nio.ByteBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 234 [Loaded java.nio.HeapByteBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 235 [Loaded java.nio.Bits from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 236 [Loaded java.nio.ByteOrder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 237 [Loaded java.util.concurrent.atomic.AtomicLong from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 238 [Loaded sun.misc.JavaNioAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 239 [Loaded java.nio.Bits$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 240 [Loaded java.io.BufferedWriter from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 241 [Loaded java.io.DefaultFileSystem from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 242 [Loaded java.io.FileSystem from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 243 [Loaded java.io.UnixFileSystem from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 244 [Loaded java.io.ExpiringCache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 245 [Loaded java.util.LinkedHashMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 246 [Loaded java.io.ExpiringCache$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 247 [Loaded java.lang.Enum from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 248 [Loaded java.io.File$PathStatus from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 249 [Loaded java.nio.file.Watchable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 250 [Loaded java.nio.file.Path from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 251 [Loaded java.lang.StringCoding$StringEncoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 252 [Loaded java.lang.ClassLoader$3 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 253 [Loaded java.io.ExpiringCache$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 254 [Loaded java.util.LinkedHashMap$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 255 [Loaded java.lang.ClassLoader$NativeLibrary from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 256 [Loaded java.lang.Terminator from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 257 [Loaded sun.misc.SignalHandler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 258 [Loaded java.lang.Terminator$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 259 [Loaded sun.misc.Signal from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 260 [Loaded sun.misc.NativeSignalHandler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 261 [Loaded java.lang.Integer$IntegerCache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 262 [Loaded sun.misc.OSEnvironment from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 263 [Loaded sun.misc.JavaLangAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 264 [Loaded java.lang.System$2 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 265 [Loaded java.lang.IllegalArgumentException from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 266 [Loaded java.lang.Compiler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 267 [Loaded java.lang.Compiler$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 268 [Loaded java.net.URLStreamHandlerFactory from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 269 [Loaded sun.misc.Launcher$Factory from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 270 [Loaded sun.security.util.Debug from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 271 [Loaded java.lang.ClassLoader$ParallelLoaders from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 272 [Loaded java.util.WeakHashMap$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 273 [Loaded java.util.Collections$SetFromMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 274 [Loaded java.util.WeakHashMap$KeySet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 275 [Loaded sun.misc.JavaNetAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 276 [Loaded java.net.URLClassLoader$7 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 277 [Loaded java.util.StringTokenizer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 278 [Loaded sun.misc.Launcher$ExtClassLoader$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 279 [Loaded sun.misc.MetaIndex from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 280 [Loaded java.lang.Readable from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 281 [Loaded java.io.Reader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 282 [Loaded java.io.BufferedReader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 283 [Loaded java.io.InputStreamReader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 284 [Loaded java.io.FileReader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 285 [Loaded sun.nio.cs.StreamDecoder from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 286 [Loaded java.nio.CharBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 287 [Loaded java.nio.HeapCharBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 288 [Loaded java.nio.charset.CoderResult from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 289 [Loaded java.nio.charset.CoderResult$Cache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 290 [Loaded java.nio.charset.CoderResult$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 291 [Loaded java.nio.charset.CoderResult$2 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 292 [Loaded java.lang.reflect.Array from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 293 [Loaded java.util.HashMap$TreeNode from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 294 [Loaded java.io.FileInputStream$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 295 [Loaded sun.net.www.ParseUtil from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 296 [Loaded java.util.BitSet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 297 [Loaded java.util.Locale from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 298 [Loaded sun.util.locale.LocaleObjectCache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 299 [Loaded java.util.Locale$Cache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 300 [Loaded java.util.concurrent.ConcurrentMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 301 [Loaded java.util.concurrent.ConcurrentHashMap from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 302 [Loaded java.util.concurrent.locks.Lock from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 303 [Loaded java.util.concurrent.locks.ReentrantLock from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 304 [Loaded java.util.concurrent.ConcurrentHashMap$Segment from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 305 [Loaded java.util.concurrent.ConcurrentHashMap$Node from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 306 [Loaded java.util.concurrent.ConcurrentHashMap$CounterCell from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 307 [Loaded java.util.concurrent.ConcurrentHashMap$CollectionView from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 308 [Loaded java.util.concurrent.ConcurrentHashMap$KeySetView from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 309 [Loaded java.util.concurrent.ConcurrentHashMap$ValuesView from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 310 [Loaded java.util.concurrent.ConcurrentHashMap$EntrySetView from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 311 [Loaded sun.util.locale.BaseLocale from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 312 [Loaded sun.util.locale.BaseLocale$Cache from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 313 [Loaded sun.util.locale.BaseLocale$Key from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 314 [Loaded sun.util.locale.LocaleObjectCache$CacheEntry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 315 [Loaded java.util.Locale$LocaleKey from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 316 [Loaded sun.util.locale.LocaleUtils from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 317 [Loaded java.lang.CharacterData from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 318 [Loaded java.lang.CharacterDataLatin1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 319 [Loaded java.net.Parts from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 320 [Loaded java.net.URLStreamHandler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 321 [Loaded sun.net.www.protocol.file.Handler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 322 [Loaded sun.misc.JavaSecurityAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 323 [Loaded java.security.ProtectionDomain$JavaSecurityAccessImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 324 [Loaded sun.misc.JavaSecurityProtectionDomainAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 325 [Loaded java.security.ProtectionDomain$2 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 326 [Loaded java.security.ProtectionDomain$Key from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 327 [Loaded java.security.Principal from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 328 [Loaded java.util.HashSet from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 329 [Loaded sun.misc.URLClassPath from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 330 [Loaded sun.net.www.protocol.jar.Handler from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 331 [Loaded sun.misc.Launcher$AppClassLoader$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 332 [Loaded java.lang.SystemClassLoaderAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 333 [Loaded java.lang.invoke.MethodHandleImpl from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 334 [Loaded java.lang.invoke.MethodHandleImpl$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 335 [Loaded java.util.function.Function from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 336 [Loaded java.lang.invoke.MethodHandleImpl$2 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 337 [Loaded java.lang.invoke.MethodHandleImpl$3 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 338 [Loaded java.lang.ClassValue from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 339 [Loaded java.lang.invoke.MethodHandleImpl$4 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 340 [Loaded java.lang.ClassValue$Entry from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 341 [Loaded java.lang.ClassValue$Identity from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 342 [Loaded java.lang.ClassValue$Version from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 343 [Loaded java.lang.invoke.MemberName$Factory from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 344 [Loaded java.lang.invoke.MethodHandleStatics from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 345 [Loaded java.lang.invoke.MethodHandleStatics$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 346 [Loaded sun.misc.PostVMInitHook from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 347 [Loaded sun.usagetracker.UsageTrackerClient from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 348 [Loaded java.util.concurrent.atomic.AtomicBoolean from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 349 [Loaded sun.usagetracker.UsageTrackerClient$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 350 [Loaded sun.usagetracker.UsageTrackerClient$4 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 351 [Loaded sun.usagetracker.UsageTrackerClient$3 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 352 [Loaded java.io.FileOutputStream$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 353 [Loaded sun.launcher.LauncherHelper from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 354 [Loaded java.net.URLClassLoader$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 355 [Loaded sun.net.util.URLUtil from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 356 [Loaded sun.misc.URLClassPath$3 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 357 [Loaded sun.misc.URLClassPath$Loader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 358 [Loaded sun.misc.URLClassPath$JarLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 359 [Loaded java.util.zip.ZipConstants from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 360 [Loaded java.util.zip.ZipFile from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 361 [Loaded sun.misc.JavaUtilZipFileAccess from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 362 [Loaded java.util.zip.ZipFile$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 363 [Loaded sun.misc.URLClassPath$FileLoader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 364 [Loaded sun.misc.Resource from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 365 [Loaded sun.misc.URLClassPath$FileLoader$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 366 [Loaded sun.nio.ByteBuffered from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 367 [Loaded sun.misc.PerfCounter from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 368 [Loaded sun.misc.Perf$GetPerfAction from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 369 [Loaded sun.misc.Perf from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 370 [Loaded sun.misc.PerfCounter$CoreCounters from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 371 [Loaded sun.nio.ch.DirectBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 372 [Loaded java.nio.MappedByteBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 373 [Loaded java.nio.DirectByteBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 374 [Loaded java.nio.LongBuffer from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 375 [Loaded java.nio.DirectLongBufferU from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 376 [Loaded java.security.PermissionCollection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 377 [Loaded java.security.Permissions from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 378 [Loaded java.net.URLConnection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 379 [Loaded sun.net.www.URLConnection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 380 [Loaded sun.net.www.protocol.file.FileURLConnection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 381 [Loaded sun.net.www.MessageHeader from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 382 [Loaded java.io.FilePermission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 383 [Loaded java.io.FilePermission$1 from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 384 [Loaded java.io.FilePermissionCollection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 385 [Loaded java.security.AllPermission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 386 [Loaded java.security.UnresolvedPermission from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 387 [Loaded java.security.BasicPermissionCollection from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 388 [Loaded Singleton from file:/usr/local/asmtools-7.0-build/binaries/lib/tmp3/] 389 [Loaded sun.launcher.LauncherHelper$FXHelper from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 390 [Loaded java.lang.Class$MethodArray from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 391 [Loaded java.lang.Void from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 392 --- 393 [Loaded Singleton$LazyHolder from file:/usr/local/asmtools-7.0-build/binaries/lib/tmp3/] 394 --- 395 LazyHolder.<clinit> 396 [Loaded java.lang.Shutdown from /usr/local/jdk1.8.0_111/jre/lib/rt.jar] 397 [Loaded java.lang.Shutdown$Lock from /usr/local/jdk1.8.0_111/jre/lib/rt.jar]
javap -verbose Singleton显示的全部信息
1 [root@localhost tmp3]# javap -verbose Singleton 2 Classfile /usr/local/asmtools-7.0-build/binaries/lib/tmp3/Singleton.class 3 Last modified Aug 13, 2019; size 770 bytes 4 MD5 checksum 993ff066c953984c811ff7998d1a8e10 5 Compiled from "Singleton.java" 6 public class Singleton 7 minor version: 0 8 major version: 52 9 flags: ACC_PUBLIC, ACC_SUPER 10 Constant pool: 11 #1 = Methodref #9.#26 // Singleton."<init>":()V 12 #2 = Methodref #10.#26 // java/lang/Object."<init>":()V 13 #3 = Class #27 // Singleton$LazyHolder 14 #4 = Fieldref #3.#28 // Singleton$LazyHolder.INSTANCE:LSingleton; 15 #5 = Fieldref #29.#30 // java/lang/System.out:Ljava/io/PrintStream; 16 #6 = String #31 // --- 17 #7 = Methodref #32.#33 // java/io/PrintStream.println:(Ljava/lang/String;)V 18 #8 = Methodref #9.#34 // Singleton.getInstance:(Z)Ljava/lang/Object; 19 #9 = Class #35 // Singleton 20 #10 = Class #36 // java/lang/Object 21 #11 = Class #37 // Singleton$1 22 #12 = Utf8 InnerClasses 23 #13 = Utf8 LazyHolder 24 #14 = Utf8 <init> 25 #15 = Utf8 ()V 26 #16 = Utf8 Code 27 #17 = Utf8 LineNumberTable 28 #18 = Utf8 getInstance 29 #19 = Utf8 (Z)Ljava/lang/Object; 30 #20 = Utf8 StackMapTable 31 #21 = Utf8 main 32 #22 = Utf8 ([Ljava/lang/String;)V 33 #23 = Utf8 (LSingleton$1;)V 34 #24 = Utf8 SourceFile 35 #25 = Utf8 Singleton.java 36 #26 = NameAndType #14:#15 // "<init>":()V 37 #27 = Utf8 Singleton$LazyHolder 38 #28 = NameAndType #38:#39 // INSTANCE:LSingleton; 39 #29 = Class #40 // java/lang/System 40 #30 = NameAndType #41:#42 // out:Ljava/io/PrintStream; 41 #31 = Utf8 --- 42 #32 = Class #43 // java/io/PrintStream 43 #33 = NameAndType #44:#45 // println:(Ljava/lang/String;)V 44 #34 = NameAndType #18:#19 // getInstance:(Z)Ljava/lang/Object; 45 #35 = Utf8 Singleton 46 #36 = Utf8 java/lang/Object 47 #37 = Utf8 Singleton$1 48 #38 = Utf8 INSTANCE 49 #39 = Utf8 LSingleton; 50 #40 = Utf8 java/lang/System 51 #41 = Utf8 out 52 #42 = Utf8 Ljava/io/PrintStream; 53 #43 = Utf8 java/io/PrintStream 54 #44 = Utf8 println 55 #45 = Utf8 (Ljava/lang/String;)V 56 { 57 public static java.lang.Object getInstance(boolean); 58 descriptor: (Z)Ljava/lang/Object; 59 flags: ACC_PUBLIC, ACC_STATIC 60 Code: 61 stack=1, locals=1, args_size=1 62 0: iload_0 63 1: ifeq 9 64 4: iconst_2 65 5: anewarray #3 // class Singleton$LazyHolder 66 8: areturn 67 9: getstatic #4 // Field Singleton$LazyHolder.INSTANCE:LSingleton; 68 12: areturn 69 LineNumberTable: 70 line 11: 0 71 line 12: 9 72 StackMapTable: number_of_entries = 1 73 frame_type = 9 /* same */ 74 75 public static void main(java.lang.String...); 76 descriptor: ([Ljava/lang/String;)V 77 flags: ACC_PUBLIC, ACC_STATIC, ACC_VARARGS 78 Code: 79 stack=2, locals=1, args_size=1 80 0: getstatic #5 // Field java/lang/System.out:Ljava/io/PrintStream; 81 3: ldc #6 // String --- 82 5: invokevirtual #7 // Method java/io/PrintStream.println:(Ljava/lang/String;)V 83 8: iconst_1 84 9: invokestatic #8 // Method getInstance:(Z)Ljava/lang/Object; 85 12: pop 86 13: getstatic #5 // Field java/lang/System.out:Ljava/io/PrintStream; 87 16: ldc #6 // String --- 88 18: invokevirtual #7 // Method java/io/PrintStream.println:(Ljava/lang/String;)V 89 21: iconst_0 90 22: invokestatic #8 // Method getInstance:(Z)Ljava/lang/Object; 91 25: pop 92 26: return 93 LineNumberTable: 94 line 15: 0 95 line 16: 8 96 line 17: 13 97 line 18: 21 98 line 19: 26 99 100 Singleton(Singleton$1); 101 descriptor: (LSingleton$1;)V 102 flags: ACC_SYNTHETIC 103 Code: 104 stack=1, locals=2, args_size=2 105 0: aload_0 106 1: invokespecial #1 // Method "<init>":()V 107 4: return 108 LineNumberTable: 109 line 1: 0 110 } 111 SourceFile: "Singleton.java" 112 InnerClasses: 113 static #11; //class Singleton$1
《深入理解Java虚拟机》- Java虚拟机是如何加载Java类的?
原文：https://www.cnblogs.com/chenscript/p/11361111.html
