Split a picture picture into four pieces

Effect of the title:

Split a picture into four pieces, because the picture coding problem, split after only see the effect of the first

Package com.hcj.july21.am;
Import Java.io.File;
Import Java.io.FileInputStream;
Import java.io.FileNotFoundException;

Import Java.io.FileOutputStream; 
		public class Testhe {public static void main (string[] args) throws Exception {file F1 = new File ("images/copy1.jpg");
		File F2 = new file ("Images/copy2.jpg");
		File F3 = new file ("Images/copy3.jpg");
		File F4 = new file ("Images/copy4.jpg");
		
		File out = new file ("Images2/treasuremap.jpg");
		FileInputStream fis1 = new FileInputStream (F1);
		FileInputStream Fis2 = new FileInputStream (F2);
		FileInputStream fis3 = new FileInputStream (F3);
		
		FileInputStream fis4 = new FileInputStream (f4);
		
		FileOutputStream fos = new FileOutputStream (out);
		
		byte[] buffer = new byte[60592 + 1000];
		int read1 = fis1.read (buffer);
		
		Fos.write (buffer, 0, read1);
		int read2 = fis2.read (buffer);
		
		Fos.write (buffer, 0, read2);
		int read3 = fis3.read (buffer);
		
		Fos.write (buffer, 0, READ3);
		int read4 = fis4.read (buffer); Fos.wrITE (buffer, 0, READ4);
		Fos.close ();
		Fis4.close ();
		Fis3.close ();
		Fis2.close ();
		Fis1.close ();
	System.out.println ("End");
 }
}