CODEWITHSUNDEEP
javaswingwidthjlabel
nik
nik

Reputation: 411

how get current label's width

There a panel. I add JLabel on that panel and want to know the size of that JLabel.

Here is simple code:

import java.awt.Dimension;
import java.awt.Label;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;


class MyPanel extends JPanel {

    MyPanel() {
        this.setPreferredSize(new Dimension(300, 300));        
        Label myLabel = new Label("ddddddddd");
        this.add(myLabel);        
        System.out.println(myLabel.getPreferredSize().width);        
        System.out.println(myLabel.getSize().width);
        System.out.println(myLabel.getMinimumSize().width);
        System.out.println(myLabel.getMaximumSize().width);
    }
}


class MyFrame extends JFrame {

    MyFrame() {        
        this.setTitle("Test");
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        
        this.add(new MyPanel());                
        this.pack();
        this.setVisible(true);
    }
}


public class Text {

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {

                new MyFrame();                
            }
        });
    }
}

The results is not what I expected:

0.0
0.0
0.0
32767.0

In some other programm I use the "getPreferredSize().width" and I receive correct result but unfortunately I don't have working code on my hand now.

Can someone explane why with "getPreferredSize().width" I receive zero and how can I get the current label's width?

Upvotes: 1

Views: 2599

Answers (1)

Jordi Castilla
Jordi Castilla

Reputation: 26961

Use java.swing.JLabel instead java.awt.Label

JLabel myLabel = new JLabel("ddddddddd");

OUTPUT:

63
0
63
63

Upvotes: 3

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