How to Disable Buttons using JAVA Applet and AWT

import java.applet.Applet;
import java.awt.Button;
/*
<applet code="ButtonDisable" width=100 height=200>
</applet>
*/
public class DisableButtons extends Applet {
    public void init() {

        //create Buttons

        Button Button1 = new Button("Ok");
        Button Button2 = new Button("Cancel");
        Button Button3 = new Button("Submit");
        Button Button4 = new Button("Reset");

        //add Buttons

        add(Button1);
        add(Button2);
        add(Button3);
        add(Button4);
        //disable a Button
        Button4.setEnabled(false);
        Button2.setEnabled(false);
    }
}