Add colour and a button with null layout manager

<source="java">

package Awt1;

import java.awt.*; import java.awt.event.*;

class Awt1 extends Frame { Button l=new Button("Hello");

public Awt1() { addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { dispose(); System.exit(0); } } ); setLayout(null);//no layout manage }

public static void main(String args[]) { System.out.println("Starting Awt1..."); Awt1 mainFrame = new Awt1(); mainFrame.setSize(400, 400); mainFrame.setTitle("Awt1"); mainFrame.setVisible(true); mainFrame.setBackground(new java.awt.Color(0,0,255)); Button bb=new Button("Hello"); bb.setBounds(100,100,80,30);// setting button position mainFrame.add(bb);

} }

</source>