Software Development Cross Solution - Index of - Free

tested code is completed code
}
258 Chapter 7
Here’s the code we changed in Chapter 6. The bug has to be related to this stuff somewhere.
Find the bug that bit us this time.
public void buildGUI() {
// code from buildGUI
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);
// more code in buildGUI()
}
public class MyPokeListener implements ActionListener {
public void actionPerformed(ActionEvent a) {
// We’ll create an empty state array here
boolean[] checkboxState = new boolean[255];
try {
out.writeObject(POKE_START_SEQUENCE);
out.writeObject(checkboxState);
} catch (Exception ex) {
System.out.println(“Failed to poke!”); }
}
}
// other code in BeatBoxFinal.java
What went wrong in this code?
Why didn’t our tests catch this?
What would you do differently?
When we send the dummy array of checkboxes, we’re off by one-we only send
255 checkboxes, and it should be 256 (16x16).
Our tests sent valid arrays to our receiver code, but we didn’t really test
the GUI side of the application.
We need a way to test more of our code. We should add a test that will
catch this. (But what else are we missing?)
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Here’s the bug.
We create an
array of 255
booleans instead
of 256.