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65 lines
1.2 KiB
Java
65 lines
1.2 KiB
Java
Grid Layout Demo
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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public class GridLayoutDemo extends JFrame
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implements ActionListener {
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private JButton b[];
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private String names[] =
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{ "one", "two", "three", "four", "five", "six" };
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private boolean toggle = true;
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private Container c;
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private GridLayout grid1, grid2;
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public GridLayoutDemo()
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{
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super( "GridLayout Demo" );
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grid1 = new GridLayout( 2, 3, 5, 5 );
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grid2 = new GridLayout( 3, 2 );
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c = getContentPane();
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c.setLayout( grid1 );
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// create and add buttons
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b = new JButton[ names.length ];
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for (int i = 0; i < names.length; i++ ) {
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b[ i ] = new JButton( names[ i ] );
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b[ i ].addActionListener( this );
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c.add( b[ i ] );
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}
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setSize( 300, 150 );
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show();
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}
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public void actionPerformed( ActionEvent e )
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{
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if ( toggle )
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c.setLayout( grid2 );
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else
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c.setLayout( grid1 );
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toggle = !toggle;
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c.validate();
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}
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public static void main( String args[] )
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{
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GridLayoutDemo app = new GridLayoutDemo();
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app.addWindowListener(
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new WindowAdapter() {
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public void windowClosing( WindowEvent e )
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{
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System.exit( 0 );
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}
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}
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);
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}
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}
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