Java File

 1 import java.io.File;
 2 
 3 public class Separator {
 4     public static void main(String[] args)  {
 5         System.out.println(File.separator);
 6         System.out.println(File.separatorChar);
 7         System.out.println(File.pathSeparator);
 8         System.out.println(File.pathSeparatorChar);
 9     }
10 }

 1 import java.io.File;
 2 
 3 public class Constructor {
 4     public static void main(String[] args) {
 5         File src = null;
 6         
 7         // 1. File(File parent, String child)
 8         src = new File(new File("E:/Java/workspace/IO_Study01"), "StarSky.jpg");
 9         System.out.println(src);
10         System.out.println(src.length() + " bytes");
11         System.out.println();
12         
13         // 2. File(String pathname)
14         src = new File("E:/Java/workspace/IO_Study01/StarSky.jpg");
15         System.out.println(src);
16         System.out.println(src.length() + " bytes");
17         System.out.println();
18         
19         // 3. File(String parent, String child)
20         src = new File("E:/Java/workspace/IO_Study01", "StarSky.jpg");
21         System.out.println(src);
22         System.out.println(src.length() + " bytes");
23         System.out.println();
24         
25         // 4. File(URI uri)
26     }
27 }