如何在黄连之前显示Jframe

Question

I tried one code in JoptionPane. I want to show Jframe then need show popup dialog.. I done some research but not get proper answer. major code is as follows

here the code :

Package javaapplication1;

import java.awt.Dimension;
import java.awt.Toolkit;
import javax.swing.JOptionPane;

public class home extends javax.swing.JFrame {

    public home() {
        initComponents();

        Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
        this.setLocation(dim.width/2-this.getSize().width/2, dim.height/2-this.getSize().height/2);
        JOptionPane.showMessageDialog(rootPane,"welcome");
        // JOptionPane.showMessageDialog(rootPane,"welcome");
    }
}

Answer 1

Simply call setVisible(true) on the JFrame before displaying the JOptionPane. That's it.