How do I use requestFocus in a Java JFrame GUI?
- by JohnWong
I am given an assignment but I am totally new to Java (I have been programming in C++ and Python for two years).
So we are doing GUI and basically we extended JFrame and added a couple fields.
Say we have a field named "Text 1" and "Text 2". When user presses enter with the cursor in Text 1, move the focus to Text 2. I tried to add
private JTextField textfield1() {
textfield1 = new JTextField();
textfield1.setPreferredSize(new Dimension(200, 20));
textfield1.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
textfield1text = textfield1.getText().trim();
textfield1.setText(textfield1text);
System.out.println(textfield1text);
textfield1.requestFocus();
}
});
return textfield1;
}
But that doesn't work at all.
I noticed that requestFocus is not recommended, and instead one should use requestFocusWindows. But I tried that too. Upon some readings it seems like I have to do keyboard action and listener? But my teacher said it only requires 1 line...
