file handling in java

Program to copy file content into another file
for example
create two text files
file1.txt content is copied into file2.txt


import java.io.*;
class Filedemo
{
  public static void main(String args[]) throws FileNotFoundException,IOException
  {
   FileInputStream fis=new FileInputStream("file1.txt");
  
    FileOutputStream fos=new FileOutputStream("file2.txt");
  
  
   
   int data;
  while((data=fis.read())!=-1)
{
   fos.write(data);

 System.out.println("successfully file1 is copied into file2");
 

}

 
}//main
}//class

output