Software Development Cross Solution - Index of - Free

finish the story
And now the GUI work...
We need one more piece of code to get this story together. We need to add a
button to the GUI that lets the user actually send the Poke. Here’s the code to take
care of that task:
// The code below goes in BeatBox.java,
// in the buildGUI() method
JButton sendIt = new JButton("sendIt");
sendIt.addActionListener(new MySendListener());
buttonBox.add(sendIt);
JButton sendPoke = new JButton("Send Poke");
sendPoke.addActionListener(new MyPokeListener());
buttonBox.add(sendPoke);
userMessage = new JTextField();
buttonBox.add(userMessage);
// Below is new code we need to add, also to BeatBox.java
public class MyPokeListener implements ActionListener {
}
public void actionPerformed(ActionEvent a) {
// We'll create an empty state array here
boolean[] checkboxState = new boolean[255];
}
182 Chapter 6
try {
out.writeObject(POKE_START_SEQUENCE);
out.writeObject(checkboxState);
} catch (Exception ex) {
System.out.println("Failed to poke!");
}
Download at WoweBook.Com
Finally, add the button to the box
holding the other buttons.
Task 5
Add button to GUI
to send Poke sequence
to other BeatBox
instances.
First we need to create a new
button for our Poke feature.
Then we set up a
listener so we can react
when it’s clicked.
Here we create an array of
booleans for our state. We can
leave them all false because the
receiving side ignores them when
it gets the POKE command.
Here’s the magic: to send a poke we send the
magic POKE_START_SEQUENCE and our array
of booleans to the server. The server will relay
our magic sequence to the other clients, and
they’ll beep at the user because of the earlier
code we wrote (back on page 180).
.5