Swing Examples - Split Pane with horizontal split

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The class SplitPane allows to have movable split between two panels.

Example

import java.awt.BorderLayout;
import java.awt.FlowLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSplitPane;
import javax.swing.JTextField;

public class SwingTester {
   public static void main(String[] args) {
      createWindow();
   }

   private static void createWindow() {    
      JFrame frame = new JFrame("Swing Tester");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      createUI(frame);
      frame.setSize(560, 200);      
      frame.setLocationRelativeTo(null);  
      frame.setVisible(true);
   }

   private static void createUI(final JFrame frame){  
      JPanel buttonPanel = new JPanel(new FlowLayout());
      buttonPanel.add(new JButton("OK"));
      buttonPanel.add(new JButton("Cancel"));    
      JPanel textBoxPanel = new JPanel(new FlowLayout());
      textBoxPanel.add(new JLabel("Name:"));
      textBoxPanel.add(new JTextField(20));
      JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,buttonPanel, textBoxPanel);
      splitPane.setOneTouchExpandable(true);
      splitPane.setDividerLocation(150);
      frame.getContentPane().add(splitPane, BorderLayout.CENTER);      
   }
}

Output