Simple Event Handing

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

class EventHandling extends Frame implements ActionListener{
TextField tf;
EventHandling(){

tf=new TextField();
tf.setBounds(60,50,170,20);



Button b=new Button("click me");
b.setBounds(100,120,80,30);

b.addActionListener(this);

add(b);add(tf);

setSize(300,300);
setLayout(null);
setVisible(true);

}

public void actionPerformed(ActionEvent e){
tf.setText("Welcome");
}

public static void main(String args[]){
new EventHandling();
}
}