In this example we are going to see how to create a JScrollPane container in a Java Desktop Application. This is one of the most important components in a GUI application, especially when your client code has to handle and to display a large amount of data.
It is very simple to create a JScrollPane. All you have to do is:
- Create a new
JFrame. - Create a
JTextArea. - Call
new JScrollPane(textArea)to create a scrollable Text Area. Remember thatJScrollPaneis a container and you can add any component you want to it to make it scrollable. - Use
setHorizontalScrollBarPolicyandsetVerticalScrollBarPolicyto set the vertical and horizontal scroll bar policies.
Let’s see the code:
package com.javacodegeeks.snippets.desktop;
import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class CreateJScrollPaneExample {
private static final long serialVersionUID = 1L;
private static void createAndShowGUI() {
// Create and set up the window.
final JFrame frame = new JFrame("Scroll Pane Example");
// Display the window.
frame.setSize(200, 200);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// set flow layout for the frame
frame.getContentPane().setLayout(new FlowLayout());
JTextArea textArea = new JTextArea(5, 5);
JScrollPane scrollableTextArea = new JScrollPane(textArea);
scrollableTextArea.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
scrollableTextArea.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
frame.getContentPane().add(scrollableTextArea);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
This was an example on how to create a JScrollPane.
