package www.woniu.gui.one; public class Test { private int age= 30; private String name= "张三"; public int getAge() { return age; } public void setAge(int age) { this.age = age; } private String getName() { return name; } public void setName(String name) { this.name = name; } }
package www.woniu.gui.one;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
public class TestReflection {
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
TestReflection tr= new TestReflection();
tr.reflection();
}
private void reflection() throws Exception {
// TODO Auto-generated method stub
Class<?> clazz= Class.forName("www.woniu.gui.one.Test");
Object obj= clazz.newInstance();
Method method1= clazz.getDeclaredMethod("setAge", int.class);
method1.invoke(obj, 500);
Method method2= clazz.getDeclaredMethod("getAge");
int age= (int)method2.invoke(obj);
System.out.println(age);
Field field1= clazz.getDeclaredField("name");
field1.setAccessible(true);
field1.set(obj, "李四");
System.out.println(field1.get(obj));
Field field2= clazz.getDeclaredField("age");
field2.setAccessible(true);
field2.set(obj, 33);
System.out.println(field2.get(obj));
Method method3= clazz.getDeclaredMethod("getName");
method3.setAccessible(true);
String name= (String)method3.invoke(obj);
System.out.println(name);
}
}
原文：http://www.cnblogs.com/wujianbo123/p/7476086.html