PushbackInputStream

import java.lang.System;
import java.io.PushbackInputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;


public class  PushbackIOApp
{
    public static void main(String[] args) throws IOException
    {
    ByteArrayOutputStream outStream = new ByteArrayOutputStream();
    String s = "wowsers";
    System.out.println("out

        System.out.println("Hello World!");
    }
}