CODEWITHSUNDEEP
javaswing
mullen18
mullen18

Reputation: 121

How do I add and display a JLabel at runtime?


I created frame with button and when it is pressed all content is removed and replaced by new one. But I can not display label, here is my code:

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         

    getContentPane().removeAll();

    jLabel2 = new javax.swing.JLabel();
    jLabel2.setFont(new java.awt.Font("Tahoma", 0, 12));
    jLabel2.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
    jLabel2.setText("Hello World!");
    jLabel2.setLocation(80, 80);
    jLabel2.setVisible(true);

    getContentPane().add(jLabel2);

    getContentPane().repaint();
    pack();
}

What am I doing wrong? :(

Upvotes: 2

Views: 224

Answers (3)

My-Name-Is
My-Name-Is

Reputation: 4940

You should use validate() instead of repaint. The rest of your source looks fine.

The validate method is used to cause a container to lay out its subcomponents again. It should be invoked when this container's subcomponents are modified (added to or removed from the container, or layout-related information changed) after the container has been displayed.

Upvotes: 1

Paul Samsotha
Paul Samsotha

Reputation: 209132

Instead of trying to remove all and add new components, use a CardLayout, which will "layer" panels and let you navigate between them. See How to use CardLayout and you can see a simple example here

You can also see how to use CardLayout with Netbeans GUI Builder here

Upvotes: 1

user3297129
user3297129

Reputation: 299

instead of repaint() try validate().

Upvotes: 2

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