Instance « JFrame « Java Swing Q&A

1. How to check the Instance of Jframe Class is running already or not??    forums.netbeans.org

I want to create A JFrame from a Jbutton Handler..but dont want to create more than one instance of JFrame...although Jbutton is clicked more thans once.. So is there any Simple ...

2. JFrame one instance    coderanch.com

Hi Can't really help you if I can't see your code, but maybe this will help: import javax.swing.*; import java.awt.event.*; public class TestFrame{ JFrame frame; JFrame frame2; JButton button; public TestFrame(){ frame = new JFrame("Main Frame"); frame2 = new JFrame("Second Frame"); button = new JButton("Open Frame"); frame.add(button); frame.setSize(300,300); frame2.setBounds(300,0,300,300); frame.setVisible(true); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame2.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); button.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ wakeFrame(); } }); ...

3. how to create a instance of a JFrame?    forums.oracle.com