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How to set jFrame at center of desktop screen?

Time:01-09

Need to permanently removing the the toolbar from my application, i try hard to remove it but i failed to make it, anyone here can help me to make it?

import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import java.awt.Color;

public class loader extends JFrame {

    private static final long serialVersionUID = 1L;
    private JPanel contentPane;

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    loader frame = new loader();
                    frame.setUndecorated(true);
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    public loader() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 450, 300);
        contentPane = new JPanel();
        contentPane.setBackground(Color.BLACK);
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(null);
    }
}

CodePudding user response:

You can remove the title bar from a JFrame in Java with this line of code:

frame.setUndecorated(true);
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