Write a java program to copy the contents from one file to other file.

The below code would copy the content of “MyInputFile.txt” to the “MyOutputFile.txt” file. If “MyOutputFile.txt” doesn’t exist then the program would create the file first and then it would copy the content.

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyExample
{
    public static void main(String[] args)
    {
    FileInputStream instream = null;
FileOutputStream outstream = null;

    try{
        File infile =new File("C:\\MyInputFile.txt");
        File outfile =new File("C:\\MyOutputFile.txt");

        instream = new FileInputStream(infile);
        outstream = new FileOutputStream(outfile);

        byte[] buffer = new byte[1024];

        int length;
        /*copying the contents from input stream to
         * output stream using read and write methods
         */
        while ((length = instream.read(buffer)) > 0){
        outstream.write(buffer, 0, length);
        }

        //Closing the input/output file streams
        instream.close();
        outstream.close();

        System.out.println("File copied successfully!!");

    }catch(IOException ioe){
    ioe.printStackTrace();
    }
    }
}

Output:

File copied successfully!!