import java.awt.HeadlessException;

import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JSplitPane;

public class TestSplitPane extends JDialog {

    public TestSplitPane() throws HeadlessException {
        initialize();
    }

    private void initialize() {
        this.setTitle("Test Split Pane");
        this.setSize(587, 449);
        JSplitPane splitPane = new JSplitPane();
        splitPane.setDividerLocation(100);
        splitPane.setLeftComponent(new JLabel("Left"));
        splitPane.setRightComponent(new JLabel("Right"));
        this.add(splitPane);
    }

    public static void main(String[] args) {
        TestSplitPane md = new TestSplitPane();
        md.setVisible(true);
    }

}