SplitPane

SplitPane Example (Run Applet)

import java.awt.*;
import javax.swing.*;

public class SplitPaneDemo extends JApplet
{
    @Override
    public void init()
    {
        this.setContentPane(new View());
    }

    public class View extends JPanel
    {
        public View()
        {
            super();

            final JSplitPane splitPane;

            // create two scrolling textAreas
            final JScrollPane textArea1 = new JScrollPane(new JTextArea("Text area 1"));
            final JScrollPane textArea2 = new JScrollPane(new JTextArea("Text area 2"));

            // put the two textArea scrollPanes into a splitPane
            splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, textArea1, textArea2);
            splitPane.setDividerLocation(150); // if setDividerLocation(150) left out, the first
            // component will be sized to be as small as possible

            // add the splitPane to the applet
            this.setLayout(new GridLayout(1, 1));
            this.add(splitPane);
        }
    }
}

Extending SplitPane

As with all other Pane components, an applet's View can Extend JSplitPane. This is shown in the code below.

SplitPane_Extends_Demo Example (Run Applet)

import javax.swing.*;

public class SplitPane_Extends_Demo extends JApplet
{
    @Override
    public void init()
    {
        this.setContentPane(new View());
    }

    public class View extends JSplitPane
    {
        public View()
        {
            super();

            // create two scrolling textAreas
            final JScrollPane textArea1 = new JScrollPane(new JTextArea("Text area 1"));
            final JScrollPane textArea2 = new JScrollPane(new JTextArea("Text area 2"));

            this.setOrientation(JSplitPane.HORIZONTAL_SPLIT);
            this.setDividerLocation(150);

            this.setLeftComponent(textArea1);
            this.setRightComponent(textArea2);
        }
    }
}

One Touch Expansion & Contraction

SplitPane_OneTouch_Demo Example (Run Applet)

import java.awt.*;
import javax.swing.*;

public class SplitPane_OneTouch_Demo extends JApplet
{
    @Override
    public void init()
    {
        this.setContentPane(new View());
    }

    public class View extends JPanel
    {
        public View()
        {
            super();

            final JSplitPane splitPane;

            // create two scrolling textAreas
            final JScrollPane textArea1 = new JScrollPane(new JTextArea("Text area 1"));
            final JScrollPane textArea2 = new JScrollPane(new JTextArea("Text area 2"));

            // put the two textArea scrollPanes into a splitPane
            splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, textArea1, textArea2);
            splitPane.setDividerLocation(150);
            // if setDividerLocation(150) left out, the first
            // component will be sized to be as small as possible

            // enable one touch compression and expansion of splitPane components
            splitPane.setOneTouchExpandable(true);

            // add the splitPane to the applet
            this.setLayout(new GridLayout(1, 1));
            this.add(splitPane);
        }
    }
}

Multiple Split Panes

SplitPane_Multiple_Demo Example (Run Applet)

import java.awt.*;
import javax.swing.*;

public class SplitPane_Multiple_Demo extends JApplet
{
    @Override
    public void init()
    {
        this.setContentPane(new View());
    }

    public class View extends JPanel
    {
        public View()
        {
            super();

            final JSplitPane mainSplitPane;
            final JSplitPane subSplitPane;

            // create three scrolling textAreas
            final JScrollPane textArea1 = new JScrollPane(new JTextArea("Text area 1"));
            final JScrollPane textArea2 = new JScrollPane(new JTextArea("Text area 2"));
            final JScrollPane textArea3 = new JScrollPane(new JTextArea("Text area 3"));

            // put the two rightmost textAreas into splitPaneRight
            subSplitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, textArea2, textArea3);

            // put the leftmost textArea and subSplitPane into the mainSplitPane
            mainSplitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, textArea1, subSplitPane);

            // enable one touch compression and expansion of splitPane components
            mainSplitPane.setOneTouchExpandable(true);
            subSplitPane.setOneTouchExpandable(true);

            // add the splitPane to the applet
            this.setLayout(new GridLayout(1, 1));
            this.add(mainSplitPane);
        }
    }
}