Java tutorial
import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; public class Main { public static void main(String[] args) throws Exception { FileOutputStream out = new FileOutputStream("test.txt"); ObjectOutputStream oout = new ObjectOutputStream(out); oout.writeUTF("Hello World from java2s.com"); oout.flush(); oout.close(); ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt")); for (int i = 0; i < ois.available();) { System.out.print((char) ois.read()); } ois.close(); } }