I've got JButtons "Pause" and "Unpause". When a user pauses the program, the Pause button should be disabled and the Unpause button should be enabled. I don't know how to write it. The unpause button works, but the Pause button doesn't, because "unpause cannot be resolved". How to deal with it? There's my code:
final JButton pause = new JButton("Pause");
pause.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
Url.pauseThread();
pause.setEnabled(false); //this works
unpause.setEnabled(true); //this does NOT work - "not resolved"
} catch (InterruptedException e1) {
e1.printStackTrace();
}
}
});
final JButton unpause = new JButton("Unpause");
unpause.addActionListener (new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
Url.resumeThread();
pause.setEnabled(true); // this works
unpause.setEnabled(false); // this works
} catch (InterruptedException e1) {
e1.printStackTrace();
}
}
});
Declare pause and unpause button and then add listeners.
final JButton pause = new JButton("Pause");
final JButton unpause = new JButton("Unpause");
pause.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
Url.pauseThread();
pause.setEnabled(false); //this works
unpause.setEnabled(true); //this does NOT work - "not resolved"
} catch (InterruptedException e1) {
e1.printStackTrace();
}
}
});
unpause.addActionListener (new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
Url.resumeThread();
pause.setEnabled(true); // this works
unpause.setEnabled(false); // this works
} catch (InterruptedException e1) {
e1.printStackTrace();
}
}
});
Basically, you were calling setEnabled
from unpause button in pause button listener before unpause button was even declared.
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