CODEWITHSUNDEEP
javaswingjframejlabel
Hurafhev
Hurafhev

Reputation: 9

Adding a JLabel to a JFrame

I have a problem with adding a JLabel to a JFrame. I use a JPanel as described in several tutorials, but the Label doesn't pop up in the Frame; the same problem with other swing components like JTextField, JButton etc.. Drawing lines, rectangles and so on does work. I hope someone knows, what kind of mistake I am making here:

package plot1;

import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;

public class Gui extends JFrame {

    private JPanel contentPane;

    public Gui(){

        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        contentPane.setLayout(new BorderLayout(0, 0));
        setContentPane(contentPane);    

        setSize(1200, 600);
        setLayout(null);
        setLocationRelativeTo(null);
        setTitle("Plot");
        addWindowListener(new WindowAdapter(){
            public void windowClosed(WindowEvent evnt){
                System.exit(0);
            }
        }); 
        setResizable(false);    

        JLabel lblStanFunc = new JLabel("Die Funktionssyntax lautet:");
        lblStanFunc.setBounds(800, 40, 300, 30);
        lblStanFunc.setVisible(true);
        add(lblStanFunc);

    }

}

The main-method is in another class:

   package plot1;

   public class Main {
       public static void main(String[] args){

           new Gui().setVisible(true);;

       }
   }

The frame pops up as expected, but the JLabel is missing. Thanks for all helpful comments.

Upvotes: 0

Views: 3992

Answers (2)

Ganesh Hariharan
Ganesh Hariharan

Reputation: 23

I can't reproduce it either. As sweeper mentioned, if your screen is not large enough, change the frame size to setSize(800, 600) and label location to lblStanFunc.setBounds(300, 250, 300, 30). The label should be in the center of the screen.

Upvotes: 0

Coder ACJHP
Coder ACJHP

Reputation: 2224

Just Add setVisible(true)

import java.awt.BorderLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;

public class GUI extends JFrame {
     private JPanel contentPane;

        public GUI(){

            contentPane = new JPanel();
            contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
            contentPane.setLayout(new BorderLayout(0, 0));
            setContentPane(contentPane);    

            setSize(1200, 600);
            setLayout(null);
            setLocationRelativeTo(null);
            setTitle("Plot");
            addWindowListener(new WindowAdapter(){
                public void windowClosed(WindowEvent evnt){
                    System.exit(0);
                }
            }); 
            setResizable(false); 
            setVisible(true);

            JLabel lblStanFunc = new JLabel("Die Funktionssyntax lautet:");
            lblStanFunc.setBounds(800, 40, 300, 30);
            lblStanFunc.setVisible(true);
            add(lblStanFunc);

        }

        public static void main(String[] args) {
            new GUI();
        }
}

Upvotes: 3

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