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tips4javatips4java
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‎source/ComponentBorderDemo.java‎

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import java.awt.*;
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import java.awt.event.*;
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import java.io.*;
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import java.net.*;
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import javax.swing.*;
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import javax.swing.border.*;
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import javax.swing.event.*;
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public class ComponentBorderDemo extends JPanel
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implements ActionListener
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{
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private JRadioButton top;
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private JRadioButton left;
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private JRadioButton bottom;
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private JRadioButton right;
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private JRadioButton leading;
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private JRadioButton center;
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private JRadioButton trailing;
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private JSpinner gap;
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private JCheckBox adjustInsets;
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ComponentBorderDemo()
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{
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setLayout( new BoxLayout(this,BoxLayout.X_AXIS) );
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setBorder( new EmptyBorder(10, 10, 10, 10) );
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JComponent east = createEastPanel();
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JComponent center = createCenterPanel();
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add(center);
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add( Box.createHorizontalStrut(10) );
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add(east);
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}
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private Box createCenterPanel()
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{
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Box box = Box.createVerticalBox();
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JPanel first = new JPanel();
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first.setBorder( new TitledBorder("Normal Approach") );
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JTextField textField1= new JTextField("text", 15);
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first.add( textField1 );
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JButton button1= new JButton("?");
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button1.addActionListener( new NameActionListener(textField1) );
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first.add( button1 );
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box.add( first );
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JPanel second = new JPanel();
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second.setBorder( new TitledBorder("Alternative Approach") );
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JTextField textField2 = new JTextField("text", 15);
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JButton button2= new JButton("?");
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button2.addActionListener( new NameActionListener(textField2) );
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JPanel panel = new JPanel();
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panel.setLayout( new FlowLayout(FlowLayout.CENTER, 0, 0) );
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panel.setBackground( textField2.getBackground() );
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panel.setBorder( textField2.getBorder() );
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textField2.setBorder(null);
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panel.add(textField2);
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panel.add(button2);
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second.add(panel);
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box.add(second);
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JPanel third = new JPanel();
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third.setBorder( new TitledBorder("Component Border Approach") );
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JTextField textField3 = new JTextField("text", 15);
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JButton button3 = new JButton("?");
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button3.setMargin(new Insets(1, 1, 1, 1) );
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ComponentBorder cb = new ComponentBorder(button3);
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button3.addActionListener( new NameActionListener(textField3) );
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if (top.isSelected())
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cb.setEdge(ComponentBorder.Edge.TOP);
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if (left.isSelected())
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cb.setEdge(ComponentBorder.Edge.LEFT);
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if (bottom.isSelected())
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cb.setEdge(ComponentBorder.Edge.BOTTOM);
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if (right.isSelected())
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cb.setEdge(ComponentBorder.Edge.RIGHT);
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if (leading.isSelected())
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cb.setAlignment(ComponentBorder.LEADING);
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if (center.isSelected())
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cb.setAlignment(ComponentBorder.CENTER);
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if (trailing.isSelected())
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cb.setAlignment(ComponentBorder.TRAILING);
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cb.setGap( (Integer)gap.getValue() );
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cb.setAdjustInsets( adjustInsets.isSelected() );
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cb.install(textField3);
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third.add( textField3 );
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box.add( third );
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return box;
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}
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private JPanel createEastPanel()
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{
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JPanel panel = new JPanel( new BorderLayout() );
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panel.setBorder( new TitledBorder("Component Border Properties") );
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Box box = Box.createVerticalBox();
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panel.add(box);
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// Create Edge radio buttons
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top = new JRadioButton("Top");
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left = new JRadioButton("Left");
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bottom = new JRadioButton("Bottom");
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right = new JRadioButton("Right");
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right.setSelected( true );
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ButtonGroup bg1 = new ButtonGroup();
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bg1.add( top );
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bg1.add( left );
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bg1.add( bottom );
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bg1.add( right );
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JPanel p1 = new JPanel(new FlowLayout(FlowLayout.LEFT));
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p1.setBorder( new TitledBorder("Edge") );
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p1.add( top );
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p1.add( left );
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p1.add( bottom );
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p1.add( right );
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box.add( p1 );
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// Create Alignment radio buttons
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leading = new JRadioButton("Leading");
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center = new JRadioButton("Center");
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trailing = new JRadioButton("Trailing");
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center.setSelected(true);
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ButtonGroup bg2 = new ButtonGroup();
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bg2.add( leading );
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bg2.add( center );
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bg2.add( trailing );
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JPanel p2 = new JPanel(new FlowLayout(FlowLayout.LEFT));
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p2.setBorder( new TitledBorder("Edge") );
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p2.add( leading );
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p2.add( center );
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p2.add( trailing );
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box.add( p2 );
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// Create Gap
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JPanel p3 = new JPanel( new FlowLayout(FlowLayout.LEFT) );
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gap = new JSpinner(new SpinnerNumberModel(5, 0, 50, 5));
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p3.add( gap );
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p3.add( new JLabel("Gap") );
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box.add( p3 );
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// Create adjust insets
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JPanel p4 = new JPanel( new FlowLayout(FlowLayout.LEFT) );
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adjustInsets = new JCheckBox("Adjust Insets");
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adjustInsets.setAlignmentX(0.5f);
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adjustInsets.setSelected(true);
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p4.add(adjustInsets);
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box.add(p4);
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JButton button = new JButton("Recreate Component Border");
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button.addActionListener( this );
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panel.add(button, BorderLayout.SOUTH);
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return panel;
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}
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public void actionPerformed(ActionEvent e)
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{
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remove(0);
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add(createCenterPanel(), 0);
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revalidate();
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repaint();
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}
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static class NameActionListener implements ActionListener
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{
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JTextField textField;
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NameActionListener(JTextField textField)
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{
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this.textField = textField;
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}
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public void actionPerformed(ActionEvent e)
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{
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JButton button = (JButton)e.getSource();
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String text = JOptionPane.showInputDialog(
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button,
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"Enter Name",
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textField.getText()
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);
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textField.setText( text );
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}
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}
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public static void main(String[] args)
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{
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SwingUtilities.invokeLater(new Runnable() {
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public void run() {
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createAndShowGUI();
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}
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});
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}
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public static void createAndShowGUI()
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{
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JFrame frame = new JFrame("Component Border");
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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frame.add( new ComponentBorderDemo() );
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frame.setSize(600, 360);
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frame.setLocationRelativeTo(null);
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frame.setVisible(true);
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}
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}

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