Java by API/javax.swing/JSplitPane

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JSplitPane: addHierarchyListener(HierarchyListener l)

   <source lang="java">

import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.HierarchyEvent; import java.awt.event.HierarchyListener; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JSplitPane; public class MainClass { 

 public static void main(String args[]) throws Exception {
   JFrame vFrame = new JFrame("Vertical Split");
   vFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JComponent leftButton = new JButton("Left");
   JComponent rightButton = new JButton("Right");
   final JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
   splitPane.setOneTouchExpandable(true);
   splitPane.setLeftComponent(leftButton);
   splitPane.setRightComponent(rightButton);
   
   ActionListener oneActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.resetToPreferredSizes();
     }
   };
   ((JButton) rightButton).addActionListener(oneActionListener);
   
   ActionListener anotherActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.setDividerLocation(10);
       splitPane.setContinuousLayout(true);
     }
   };
   
   ((JButton) leftButton).addActionListener(anotherActionListener);
   HierarchyListener hierarchyListener = new HierarchyListener() {
     public void hierarchyChanged(HierarchyEvent e) {
       long flags = e.getChangeFlags();
       if ((flags & HierarchyEvent.SHOWING_CHANGED) == HierarchyEvent.SHOWING_CHANGED) {
         splitPane.setDividerLocation(.75);
       }
     }
   };
   splitPane.addHierarchyListener(hierarchyListener);
   vFrame.add(splitPane, BorderLayout.CENTER);
   vFrame.setSize(300, 150);
   vFrame.setVisible(true);
 }

} 


 </source>



JSplitPane: getBottomComponent()

   <source lang="java">

import javax.swing.JButton; import javax.swing.JSplitPane; public class Main { 

 public static void main(String[] argv) throws Exception {
   JButton leftComponent = new JButton("left");
   JButton rightComponent = new JButton("right");
   JButton topComponent = new JButton("top");
   JButton bottomComponent = new JButton("bottom");
   JSplitPane hpane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftComponent, rightComponent);
   JSplitPane vpane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, topComponent, bottomComponent);
   leftComponent = (JButton) hpane.getLeftComponent();
   rightComponent = (JButton) hpane.getRightComponent();
   topComponent = (JButton) vpane.getTopComponent();
   bottomComponent = (JButton) vpane.getBottomComponent();
   hpane.setLeftComponent(topComponent);
   hpane.setRightComponent(bottomComponent);
   vpane.setTopComponent(leftComponent);
   vpane.setBottomComponent(rightComponent);
 }

} 


 </source>



JSplitPane: getDividerLocation()

   <source lang="java">

import java.awt.BorderLayout; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JSplitPane; public class MainClass { 

 public static void main(String args[]) throws Exception {
   JFrame frame = new JFrame("Property Split");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
   splitPane.setTopComponent(new JLabel("www.jexp.ru"));
   splitPane.setBottomComponent(new JLabel("www.jexp.ru"));
   PropertyChangeListener propertyChangeListener =
       new PropertyChangeListener() {
     public void propertyChange (PropertyChangeEvent changeEvent) {
       JSplitPane sourceSplitPane = (JSplitPane)changeEvent.getSource();
       String propertyName = changeEvent.getPropertyName();
       if (propertyName.equals(
           JSplitPane.LAST_DIVIDER_LOCATION_PROPERTY)) {
         int current = sourceSplitPane.getDividerLocation();
         System.out.println ("Current: " + current);
         Integer last = (Integer)changeEvent.getNewValue();
         System.out.println ("Last: " + last);
         Integer priorLast = (Integer)changeEvent.getOldValue();
         System.out.println ("Prior last: " + priorLast);
       }
     }
   };
   // Attach listener
   splitPane.addPropertyChangeListener(propertyChangeListener);
   frame.add(splitPane, BorderLayout.CENTER);
   frame.setSize(300, 150);
   frame.setVisible(true);
 }

} 



 </source>



JSplitPane: getLeftComponent()

   <source lang="java">

import javax.swing.JButton; import javax.swing.JSplitPane; public class Main { 

 public static void main(String[] argv) throws Exception {
   JButton leftComponent = new JButton("left");
   JButton rightComponent = new JButton("right");
   JButton topComponent = new JButton("top");
   JButton bottomComponent = new JButton("bottom");
   JSplitPane hpane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftComponent, rightComponent);
   JSplitPane vpane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, topComponent, bottomComponent);
   leftComponent = (JButton) hpane.getLeftComponent();
   rightComponent = (JButton) hpane.getRightComponent();
   topComponent = (JButton) vpane.getTopComponent();
   bottomComponent = (JButton) vpane.getBottomComponent();
   hpane.setLeftComponent(topComponent);
   hpane.setRightComponent(bottomComponent);
   vpane.setTopComponent(leftComponent);
   vpane.setBottomComponent(rightComponent);
 }

} 


 </source>



JSplitPane: getRightComponent()

   <source lang="java">

import javax.swing.JButton; import javax.swing.JSplitPane; public class Main { 

 public static void main(String[] argv) throws Exception {
   JButton leftComponent = new JButton("left");
   JButton rightComponent = new JButton("right");
   JButton topComponent = new JButton("top");
   JButton bottomComponent = new JButton("bottom");
   JSplitPane hpane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftComponent, rightComponent);
   JSplitPane vpane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, topComponent, bottomComponent);
   leftComponent = (JButton) hpane.getLeftComponent();
   rightComponent = (JButton) hpane.getRightComponent();
   topComponent = (JButton) vpane.getTopComponent();
   bottomComponent = (JButton) vpane.getBottomComponent();
   hpane.setLeftComponent(topComponent);
   hpane.setRightComponent(bottomComponent);
   vpane.setTopComponent(leftComponent);
   vpane.setBottomComponent(rightComponent);
 }

} 


 </source>



JSplitPane: getTopComponent()

   <source lang="java">

import javax.swing.JButton; import javax.swing.JSplitPane; public class Main { 

 public static void main(String[] argv) throws Exception {
   JButton leftComponent = new JButton("left");
   JButton rightComponent = new JButton("right");
   JButton topComponent = new JButton("top");
   JButton bottomComponent = new JButton("bottom");
   JSplitPane hpane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftComponent, rightComponent);
   JSplitPane vpane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, topComponent, bottomComponent);
   leftComponent = (JButton) hpane.getLeftComponent();
   rightComponent = (JButton) hpane.getRightComponent();
   topComponent = (JButton) vpane.getTopComponent();
   bottomComponent = (JButton) vpane.getBottomComponent();
   hpane.setLeftComponent(topComponent);
   hpane.setRightComponent(bottomComponent);
   vpane.setTopComponent(leftComponent);
   vpane.setBottomComponent(rightComponent);
 }

} 


 </source>



JSplitPane.LAST_DIVIDER_LOCATION_PROPERTY

   <source lang="java">

import java.awt.BorderLayout; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JSplitPane; public class MainClass { 

 public static void main(String args[]) throws Exception {
   JFrame frame = new JFrame("Property Split");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
   splitPane.setTopComponent(new JLabel("www.jexp.ru"));
   splitPane.setBottomComponent(new JLabel("www.jexp.ru"));
   PropertyChangeListener propertyChangeListener =
       new PropertyChangeListener() {
     public void propertyChange (PropertyChangeEvent changeEvent) {
       JSplitPane sourceSplitPane = (JSplitPane)changeEvent.getSource();
       String propertyName = changeEvent.getPropertyName();
       if (propertyName.equals(
           JSplitPane.LAST_DIVIDER_LOCATION_PROPERTY)) {
         int current = sourceSplitPane.getDividerLocation();
         System.out.println ("Current: " + current);
         Integer last = (Integer)changeEvent.getNewValue();
         System.out.println ("Last: " + last);
         Integer priorLast = (Integer)changeEvent.getOldValue();
         System.out.println ("Prior last: " + priorLast);
       }
     }
   };
   // Attach listener
   splitPane.addPropertyChangeListener(propertyChangeListener);
   frame.add(splitPane, BorderLayout.CENTER);
   frame.setSize(300, 150);
   frame.setVisible(true);
 }

} 


 </source>



JSplitPane: resetToPreferredSizes()

   <source lang="java">

import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.HierarchyEvent; import java.awt.event.HierarchyListener; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JSplitPane; public class MainClass { 

 public static void main(String args[]) throws Exception {
   JFrame vFrame = new JFrame("Vertical Split");
   vFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JComponent leftButton = new JButton("Left");
   JComponent rightButton = new JButton("Right");
   final JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
   splitPane.setOneTouchExpandable(true);
   splitPane.setLeftComponent(leftButton);
   splitPane.setRightComponent(rightButton);
   
   ActionListener oneActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.resetToPreferredSizes();
     }
   };
   ((JButton) rightButton).addActionListener(oneActionListener);
   
   ActionListener anotherActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.setDividerLocation(10);
       splitPane.setContinuousLayout(true);
     }
   };
   
   ((JButton) leftButton).addActionListener(anotherActionListener);
   HierarchyListener hierarchyListener = new HierarchyListener() {
     public void hierarchyChanged(HierarchyEvent e) {
       long flags = e.getChangeFlags();
       if ((flags & HierarchyEvent.SHOWING_CHANGED) == HierarchyEvent.SHOWING_CHANGED) {
         splitPane.setDividerLocation(.75);
       }
     }
   };
   splitPane.addHierarchyListener(hierarchyListener);
   vFrame.add(splitPane, BorderLayout.CENTER);
   vFrame.setSize(300, 150);
   vFrame.setVisible(true);
 }

} 


 </source>



JSplitPane: setContinuousLayout(boolean newContinuousLayout)

   <source lang="java">

import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.HierarchyEvent; import java.awt.event.HierarchyListener; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JSplitPane; public class MainClass { 

 public static void main(String args[]) throws Exception {
   JFrame vFrame = new JFrame("Vertical Split");
   vFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JComponent leftButton = new JButton("Left");
   JComponent rightButton = new JButton("Right");
   final JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
   splitPane.setOneTouchExpandable(true);
   splitPane.setLeftComponent(leftButton);
   splitPane.setRightComponent(rightButton);
   
   ActionListener oneActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.resetToPreferredSizes();
     }
   };
   ((JButton) rightButton).addActionListener(oneActionListener);
   
   ActionListener anotherActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.setDividerLocation(10);
       splitPane.setContinuousLayout(true);
     }
   };
   
   ((JButton) leftButton).addActionListener(anotherActionListener);
   HierarchyListener hierarchyListener = new HierarchyListener() {
     public void hierarchyChanged(HierarchyEvent e) {
       long flags = e.getChangeFlags();
       if ((flags & HierarchyEvent.SHOWING_CHANGED) == HierarchyEvent.SHOWING_CHANGED) {
         splitPane.setDividerLocation(.75);
       }
     }
   };
   splitPane.addHierarchyListener(hierarchyListener);
   vFrame.add(splitPane, BorderLayout.CENTER);
   vFrame.setSize(300, 150);
   vFrame.setVisible(true);
 }

} 


 </source>



JSplitPane: setDividerLocation(double proportionalLocation)

   <source lang="java">

import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.HierarchyEvent; import java.awt.event.HierarchyListener; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JSplitPane; public class MainClass { 

 public static void main(String args[]) throws Exception {
   JFrame vFrame = new JFrame("Vertical Split");
   vFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JComponent leftButton = new JButton("Left");
   JComponent rightButton = new JButton("Right");
   final JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
   splitPane.setOneTouchExpandable(true);
   splitPane.setLeftComponent(leftButton);
   splitPane.setRightComponent(rightButton);
   
   ActionListener oneActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.resetToPreferredSizes();
     }
   };
   ((JButton) rightButton).addActionListener(oneActionListener);
   
   ActionListener anotherActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.setDividerLocation(10);
       splitPane.setContinuousLayout(true);
     }
   };
   
   ((JButton) leftButton).addActionListener(anotherActionListener);
   HierarchyListener hierarchyListener = new HierarchyListener() {
     public void hierarchyChanged(HierarchyEvent e) {
       long flags = e.getChangeFlags();
       if ((flags & HierarchyEvent.SHOWING_CHANGED) == HierarchyEvent.SHOWING_CHANGED) {
         splitPane.setDividerLocation(.75);
       }
     }
   };
   splitPane.addHierarchyListener(hierarchyListener);
   vFrame.add(splitPane, BorderLayout.CENTER);
   vFrame.setSize(300, 150);
   vFrame.setVisible(true);
 }

} 


 </source>



JSplitPane: setDividerSize(int newSize)

   <source lang="java">

import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JSplitPane; public class Main{ 

 public static void main(String[] a) {
   int HORIZSPLIT = JSplitPane.HORIZONTAL_SPLIT;
   int VERTSPLIT = JSplitPane.VERTICAL_SPLIT;
   boolean continuousLayout = true;
   JLabel label1 = new JLabel("a");
   JLabel label2 = new JLabel("b");
   JLabel label3 = new JLabel("c");
   JSplitPane splitPane1 = new JSplitPane(VERTSPLIT, continuousLayout, label1, label2);
   splitPane1.setOneTouchExpandable(true);
   splitPane1.setDividerSize(2);
   splitPane1.setDividerLocation(0.5);
   JSplitPane splitPane2 = new JSplitPane(HORIZSPLIT, splitPane1, label3);
   splitPane2.setOneTouchExpandable(true);
   splitPane2.setDividerLocation(0.4);
   splitPane2.setDividerSize(2);
   JFrame frame = new JFrame();
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.add(splitPane2);
   frame.pack();
   frame.setVisible(true);
 }

} 


 </source>



JSplitPane: setLeftComponent(Component comp)

   <source lang="java">

import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.HierarchyEvent; import java.awt.event.HierarchyListener; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JSplitPane; public class MainClass { 

 public static void main(String args[]) throws Exception {
   JFrame vFrame = new JFrame("Vertical Split");
   vFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JComponent leftButton = new JButton("Left");
   JComponent rightButton = new JButton("Right");
   final JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
   splitPane.setOneTouchExpandable(true);
   splitPane.setLeftComponent(leftButton);
   splitPane.setRightComponent(rightButton);
   
   ActionListener oneActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.resetToPreferredSizes();
     }
   };
   ((JButton) rightButton).addActionListener(oneActionListener);
   
   ActionListener anotherActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.setDividerLocation(10);
       splitPane.setContinuousLayout(true);
     }
   };
   
   ((JButton) leftButton).addActionListener(anotherActionListener);
   HierarchyListener hierarchyListener = new HierarchyListener() {
     public void hierarchyChanged(HierarchyEvent e) {
       long flags = e.getChangeFlags();
       if ((flags & HierarchyEvent.SHOWING_CHANGED) == HierarchyEvent.SHOWING_CHANGED) {
         splitPane.setDividerLocation(.75);
       }
     }
   };
   splitPane.addHierarchyListener(hierarchyListener);
   vFrame.add(splitPane, BorderLayout.CENTER);
   vFrame.setSize(300, 150);
   vFrame.setVisible(true);
 }

} 



 </source>



JSplitPane: setOneTouchExpandable(boolean newValue)

   <source lang="java">

import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.HierarchyEvent; import java.awt.event.HierarchyListener; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JSplitPane; public class MainClass { 

 public static void main(String args[]) throws Exception {
   JFrame vFrame = new JFrame("Vertical Split");
   vFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JComponent leftButton = new JButton("Left");
   JComponent rightButton = new JButton("Right");
   final JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
   splitPane.setOneTouchExpandable(true);
   splitPane.setLeftComponent(leftButton);
   splitPane.setRightComponent(rightButton);
   
   ActionListener oneActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.resetToPreferredSizes();
     }
   };
   ((JButton) rightButton).addActionListener(oneActionListener);
   
   ActionListener anotherActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.setDividerLocation(10);
       splitPane.setContinuousLayout(true);
     }
   };
   
   ((JButton) leftButton).addActionListener(anotherActionListener);
   HierarchyListener hierarchyListener = new HierarchyListener() {
     public void hierarchyChanged(HierarchyEvent e) {
       long flags = e.getChangeFlags();
       if ((flags & HierarchyEvent.SHOWING_CHANGED) == HierarchyEvent.SHOWING_CHANGED) {
         splitPane.setDividerLocation(.75);
       }
     }
   };
   splitPane.addHierarchyListener(hierarchyListener);
   vFrame.add(splitPane, BorderLayout.CENTER);
   vFrame.setSize(300, 150);
   vFrame.setVisible(true);
 }

} 



 </source>



JSplitPane: setOrientation(JSplitPane.HORIZONTAL_SPLIT)

   <source lang="java">

import java.awt.BorderLayout; import javax.swing.JFrame; import javax.swing.JSplitPane; public class MainClass { 

 public static void main(String args[]) {
   JFrame frame = new JFrame("JSplitPane Sample");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JSplitPane splitPane = new JSplitPane();
   splitPane.setOrientation(JSplitPane.HORIZONTAL_SPLIT);
   frame.add(splitPane, BorderLayout.CENTER);
   frame.setSize(300, 200);
   frame.setVisible(true);
 }

} 


 </source>



JSplitPane: setResizeWeight(double value)

   <source lang="java">

import java.awt.BorderLayout; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JSplitPane; public class MainClass { 

 public static void main(String args[]) throws Exception {
   JFrame frame = new JFrame("Property Split");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
   splitPane.setResizeWeight(1.0);
   splitPane.setTopComponent(new JLabel("www.jexp.ru"));
   splitPane.setBottomComponent(new JLabel("www.jexp.ru"));
   frame.add(splitPane, BorderLayout.CENTER);
   frame.setSize(300, 150);
   frame.setVisible(true);
 }

} 


 </source>



JSplitPane: setRightComponent(Component comp)

   <source lang="java">

import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.HierarchyEvent; import java.awt.event.HierarchyListener; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JSplitPane; public class MainClass { 

 public static void main(String args[]) throws Exception {
   JFrame vFrame = new JFrame("Vertical Split");
   vFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JComponent leftButton = new JButton("Left");
   JComponent rightButton = new JButton("Right");
   final JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
   splitPane.setOneTouchExpandable(true);
   splitPane.setLeftComponent(leftButton);
   splitPane.setRightComponent(rightButton);
   
   ActionListener oneActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.resetToPreferredSizes();
     }
   };
   ((JButton) rightButton).addActionListener(oneActionListener);
   
   ActionListener anotherActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.setDividerLocation(10);
       splitPane.setContinuousLayout(true);
     }
   };
   
   ((JButton) leftButton).addActionListener(anotherActionListener);
   HierarchyListener hierarchyListener = new HierarchyListener() {
     public void hierarchyChanged(HierarchyEvent e) {
       long flags = e.getChangeFlags();
       if ((flags & HierarchyEvent.SHOWING_CHANGED) == HierarchyEvent.SHOWING_CHANGED) {
         splitPane.setDividerLocation(.75);
       }
     }
   };
   splitPane.addHierarchyListener(hierarchyListener);
   vFrame.add(splitPane, BorderLayout.CENTER);
   vFrame.setSize(300, 150);
   vFrame.setVisible(true);
 }

} 


 </source>



JSplitPane.VERTICAL_SPLIT

   <source lang="java">

import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.HierarchyEvent; import java.awt.event.HierarchyListener; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JSplitPane; public class MainClass { 

 public static void main(String args[]) throws Exception {
   JFrame vFrame = new JFrame("Vertical Split");
   vFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JComponent leftButton = new JButton("Left");
   JComponent rightButton = new JButton("Right");
   final JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
   splitPane.setOneTouchExpandable(true);
   splitPane.setLeftComponent(leftButton);
   splitPane.setRightComponent(rightButton);
   
   ActionListener oneActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.resetToPreferredSizes();
     }
   };
   ((JButton) rightButton).addActionListener(oneActionListener);
   
   ActionListener anotherActionListener = new ActionListener() {
     public void actionPerformed(ActionEvent event) {
       splitPane.setDividerLocation(10);
       splitPane.setContinuousLayout(true);
     }
   };
   
   ((JButton) leftButton).addActionListener(anotherActionListener);
   HierarchyListener hierarchyListener = new HierarchyListener() {
     public void hierarchyChanged(HierarchyEvent e) {
       long flags = e.getChangeFlags();
       if ((flags & HierarchyEvent.SHOWING_CHANGED) == HierarchyEvent.SHOWING_CHANGED) {
         splitPane.setDividerLocation(.75);
       }
     }
   };
   splitPane.addHierarchyListener(hierarchyListener);
   vFrame.add(splitPane, BorderLayout.CENTER);
   vFrame.setSize(300, 150);
   vFrame.setVisible(true);
 }

} 



 </source>



new JSplitPane(int newOrientation, Component newLeftComponent, Component newRightComponent)

   <source lang="java">

import java.awt.BorderLayout; import java.awt.Dimension; import javax.swing.JFrame; import javax.swing.JSplitPane; import javax.swing.JTextArea; public class MainClass extends JFrame { 

 static String sometext = "Text Text Text Text Text Text Text Text Text Text Text Text ";
 public MainClass() {
   super("Simple SplitPane Frame");
   setSize(450, 200);
   setDefaultCloseOperation(EXIT_ON_CLOSE);
   JTextArea jt1 = new JTextArea(sometext);
   JTextArea jt2 = new JTextArea(sometext);
   jt1.setLineWrap(true);
   jt2.setLineWrap(true);
   jt1.setMinimumSize(new Dimension(150, 150));
   jt2.setMinimumSize(new Dimension(150, 150));
   jt1.setPreferredSize(new Dimension(250, 200));
   JSplitPane sp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, jt1, jt2);
   getContentPane().add(sp, BorderLayout.CENTER);
 }
 public static void main(String args[]) {
   MainClass ssb = new MainClass();
   ssb.setVisible(true);
 }

} 


 </source>
Источник — «http://jexp.ru/index.php?title=Java_by_API/javax.swing/JSplitPane&oldid=692»