How to Implement CardLayout in NetBeans GUI Builder for Seamless Panel Switching?

Utilizing CardLayout in NetBeans GUI Builder

Introduction

CardLayout, a flexible layout manager, enables the seamless display of multiple panels as distinct "cards" within a single container. This comprehensive guide provides step-by-step instructions on implementing CardLayout in NetBeans GUI Builder.

Tutorial

1. Establish the Layout:

   • Add a JPanel (mainPanel) and JButtons to a JFrame.
   • Right-click mainPanel in the navigator and select "Set Layout -> CardLayout."

2. Add Panels:

   • Right-click mainPanel and select "Add from Palette -> Swing Containers -> JPanel" three times.
   • Change their variable names (e.g., panelOne, panelTwo, panelThree).

3. Differentiate Panels:

   • Drag and drop JLabels onto the panels and label them accordingly.
   • Double-click panelOne, navigate to the properties pane, and change "Card Name" to "panelOne." Repeat for the other panels.

4. Configure Button Listeners:

   • Double-click the JFrame and select the actionListener for each button.
   • Add code to switch between panels, e.g., for panelOne button:

   <code class="java">private void jbtPanelOneActionPerformed(ActionEvent evt) {                                            
       CardLayout card = (CardLayout)mainPanel.getLayout();
       card.show(mainPanel, "panelOne");
   } </code>

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5. Final Result:

   • Run the program to demonstrate the CardLayout functionality.

Advanced Tip

Consider dragging and dropping other JPanel forms onto mainPanel to enhance modularity and reduce code complexity.

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