Sketch of Event Handling applet

public class MadLib extends java.applet.Applet implements ActionListener

{ Button firstmadlib, clearbutton; Label prompt1,prompt2;

TextField input1, input2 ; TextArea output ;

. . . . . }

public void init ( )

{ // add labels and textfields (without events)

prompt1 = new Label ( "Enter a noun: ") ; add ( prompt1 ) ;

input1 = new TextField ( 20 ) ; add ( input1 ) ;

. . . }

public void actionPerformed (ActionEvent event)

{ if ( event.getSource ( ) == firstmadlib )

{String word1 = input1.getText ( ) ;

output.setText (word1 + . . .); . . . }

if ( event.getSource ( ) == clearbutton )

{input1.setText ( "" ) ; . . . }}

Previous slide

Next slide

Back to first slide

View graphic version