ToolBarButton.java A simple button that contains an image and a label for use in a toolbar. 
import java.awt.*;
import javax.swing.*;

/** Part of a small example showing basic use of JToolBar.
 *  The point here is that dropping a regular JButton in a
 *  JToolBar (or adding an Action) in JDK 1.2 doesn't give 
 *  you what you want -- namely, a small button just enclosing
 *  the icon, and with text labels (if any) below the icon,
 *  not to the right of it. In JDK 1.3, if you add an Action
 *  to the toolbar, the Action label is no longer displayed.
 *
  */

public class ToolBarButton extends JButton {
  private static final Insets margins =
    new Insets(0, 0, 0, 0);

  public ToolBarButton(Icon icon) {
    super(icon);
    setMargin(margins);
    setVerticalTextPosition(BOTTOM);
    setHorizontalTextPosition(CENTER);
  }

  public ToolBarButton(String imageFile) {
    this(new ImageIcon(imageFile));
  }

  public ToolBarButton(String imageFile, String text) {
    this(new ImageIcon(imageFile));
    setText(text);
  }
}

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mall example showing the basic use of a JToolBar

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

/** Small example showing basic use of JToolBar. 
 *
 * 
 */

public class JToolBarExample extends JFrame
                             implements ItemListener {
  private BrowserToolBar toolbar;
  private JCheckBox labelBox;

  public static void main(String[] args) {
    new JToolBarExample();
  }

  public JToolBarExample() {
    super("JToolBar Example");
    WindowUtilities.setNativeLookAndFeel();
    addWindowListener(new ExitListener());
    Container content = getContentPane();
    content.setBackground(Color.white);
    
    JPanel panel = new JPanel(new BorderLayout());
    labelBox = new JCheckBox("Show Text Labels?");
    labelBox.setHorizontalAlignment(SwingConstants.CENTER);
    labelBox.addItemListener(this);
    panel.add(new JTextArea(10,30), BorderLayout.CENTER);
    panel.add(labelBox, BorderLayout.SOUTH);

    toolbar = new BrowserToolBar();
    content.add(toolbar, BorderLayout.NORTH);
    content.add(panel, BorderLayout.CENTER);

    pack();
    setVisible(true);
  }

  public void itemStateChanged(ItemEvent event) {
    toolbar.setTextLabels(labelBox.isSelected());
    pack();
  }
}

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Demonstrates the use of a JColorChooser which presents a dialog with three different tabbed panes to allow the user to select a color preference. The dialog returns a Color object based on the user's selection or null if the user entered Cancel. 

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

/** Simple example illustrating the use of internal frames. 
 *
 *   */

public class JInternalFrames extends JFrame {
  public static void main(String[] args) {
    new JInternalFrames();
  }

  public JInternalFrames() {
    super("Multiple Document Interface");
    WindowUtilities.setNativeLookAndFeel();
    addWindowListener(new ExitListener());
    Container content = getContentPane();
    content.setBackground(Color.white);
    JDesktopPane desktop = new JDesktopPane();
    desktop.setBackground(Color.white);
    content.add(desktop, BorderLayout.CENTER);
    setSize(450, 400);
    for(int i=0; i<5; i++) {
      JInternalFrame frame
        = new JInternalFrame(("Internal Frame " + i),
                             true, true, true, true);
      frame.setLocation(i*50+10, i*50+10);
      frame.setSize(200, 150);
      frame.setBackground(Color.white);
      frame.setVisible(true);
      desktop.add(frame);
      frame.moveToFront();
    }
    setVisible(true);
  }
}

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Demonstrates the use of a JColorChooser which presents a dialog with three different tabbed panes to allow the user to select a color preference. The dialog returns a Color object based on the user's selection or null if the user entered Cancel. 

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

/** Simple example illustrating the use of JColorChooser. 
 *
 *  .
 */

public class JColorChooserTest extends JFrame
                               implements ActionListener {
  public static void main(String[] args) {
    new JColorChooserTest();
  }

  public JColorChooserTest() {
    super("Using JColorChooser");
    WindowUtilities.setNativeLookAndFeel();
    addWindowListener(new ExitListener());
    Container content = getContentPane();
    content.setBackground(Color.white);
    content.setLayout(new FlowLayout());
    JButton colorButton
      = new JButton("Choose Background Color");
    colorButton.addActionListener(this);
    content.add(colorButton);
    setSize(300, 100);
    setVisible(true);
  }

  public void actionPerformed(ActionEvent e) {
    // Args are parent component, title, initial color.
    Color bgColor
      = JColorChooser.showDialog(this,
                                 "Choose Background Color",
                                 getBackground());
    if (bgColor != null)
      getContentPane().setBackground(bgColor);
  }
}

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A JPanel that displays six radio buttons with labels.

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

/** A JPanel that displays six JRadioButtons. 
 *
 *.
 */

public class SixChoicePanel extends JPanel {
  public SixChoicePanel(String title, String[] buttonLabels) {
    super(new GridLayout(3, 2));
    setBackground(Color.lightGray);
    setBorder(BorderFactory.createTitledBorder(title));
    ButtonGroup group = new ButtonGroup();
    JRadioButton option;
    int halfLength = buttonLabels.length/2;  // Assumes even length
    for(int i=0; i<halflength ; i++) {
      option = new JRadioButton(buttonLabels[i]);
      group.add(option);
      add(option);
      option = new JRadioButton(buttonLabels[i+halfLength]);
      group.add(option);
      add(option);
    }
  }
}

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Creates three common types of sliders: one without tick marks, one with tick marks, and one with both tick marks and labels. 

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

/** Simple example illustrating the use of JSliders, especially
 *  the ability to specify tick marks and labels.
 *
 *   
 */

public class JSliders extends JFrame {
  public static void main(String[] args) {
    new JSliders();
  }

  public JSliders() {
    super("Using JSlider");
    WindowUtilities.setNativeLookAndFeel();
    addWindowListener(new ExitListener());
    Container content = getContentPane();
    content.setBackground(Color.white);
    
    JSlider slider1 = new JSlider();
    slider1.setBorder(BorderFactory.createTitledBorder
                        ("JSlider without Tick Marks"));
    content.add(slider1, BorderLayout.NORTH);
    
    JSlider slider2 = new JSlider();
    slider2.setBorder(BorderFactory.createTitledBorder
                        ("JSlider with Tick Marks"));
    slider2.setMajorTickSpacing(20);
    slider2.setMinorTickSpacing(5);
    slider2.setPaintTicks(true);
    content.add(slider2, BorderLayout.CENTER);

    JSlider slider3 = new JSlider();
    slider3.setBorder(BorderFactory.createTitledBorder
                        ("JSlider with Tick Marks & Labels"));
    slider3.setMajorTickSpacing(20);
    slider3.setMinorTickSpacing(5);
    slider3.setPaintTicks(true);
    slider3.setPaintLabels(true);
    content.add(slider3, BorderLayout.SOUTH);
    
    pack();
    setVisible(true);
  }
}

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A simple example that illustrates creating panels. In Swing, a JPanel can contain custom borders. Typically, utility methods in the BorderFactory class are used to create a border for the panel. Uses the following class:

    * SixChoicePanel.java A JPanel that displays six radio buttons with labels.
import java.awt.*;
import javax.swing.*;

/** Simple example illustrating the use of JPanels, especially
 *  the ability to add Borders.
 *
  */

public class JPanels extends JFrame {
  public static void main(String[] args) {
    new JPanels();
  }

  public JPanels() {
    super("Using JPanels with Borders");
    WindowUtilities.setNativeLookAndFeel();
    addWindowListener(new ExitListener());
    Container content = getContentPane();
    content.setBackground(Color.lightGray);
    JPanel controlArea = new JPanel(new GridLayout(3, 1));
    String[] colors = { "Red", "Green", "Blue",
                        "Black", "White", "Gray" };
    controlArea.add(new SixChoicePanel("Color", colors));
    String[] thicknesses = { "1", "2", "3", "4", "5", "6" };
    controlArea.add(new SixChoicePanel("Line Thickness",
                                       thicknesses));
    String[] fontSizes = { "10", "12", "14", "18", "24", "36" };
    controlArea.add(new SixChoicePanel("Font Size",
                                       fontSizes));
    content.add(controlArea, BorderLayout.EAST);
    JPanel drawingArea = new JPanel();
    // Preferred height is irrelevant, since using WEST region.
    drawingArea.setPreferredSize(new Dimension(400, 0));
    drawingArea.setBorder
               (BorderFactory.createLineBorder (Color.blue, 2));
    drawingArea.setBackground(Color.white);
    content.add(drawingArea, BorderLayout.WEST);
    pack();
    setVisible(true);
  }
}

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

/** Simple example illustrating the use of JButton, especially
 *  the new constructors that permit you to add an image.
 *
  */

public class JButtons extends JFrame {
  public static void main(String[] args) {
    new JButtons();
  }

  public JButtons() {
    super("Using JButton");
    WindowUtilities.setNativeLookAndFeel();
    addWindowListener(new ExitListener());
    Container content = getContentPane();
    content.setBackground(Color.white);
    content.setLayout(new FlowLayout());
    JButton button1 = new JButton("Java");
    content.add(button1);
    ImageIcon cup = new ImageIcon("images/cup.gif");
    JButton button2 = new JButton(cup);
    content.add(button2);
    JButton button3 = new JButton("Java", cup);
    content.add(button3);
    JButton button4 = new JButton("Java", cup);
    button4.setHorizontalTextPosition(SwingConstants.LEFT);
    content.add(button4);
    pack();
    setVisible(true);
  }
}

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    * WindowUtilities.java Utility class that simplifies creating a window and setting the look and feel.
    * ExitListener.java A WindowListener with support to close the window.
    * JAppletExample.java A simple applet (JApplet) created in Swing. Illustrates setting the look and feel, adding components to the content pane, and changing the layout to FlowLayout (default is BorderLayout). See JAppletExample.html (requires the Java Plug-In or a Java 2 compliant browser, for example, Netscape 6.x).
    * JFrameExample.java Demonstrates creating a simple Swing application using a JFrame. As with a JApplet, components must be added to the content pane, instead of the window directly.
    * JLabels.java Illustrates creating labels in Swing. A nice feature of JLabels is that the label text can contain HTML markup. Uses image JHUAPL.gif
    * JButtons.java Creates various buttons. In Swing, buttons can contain text only, an image only, or a combination of both an image and a label. Uses image cup.gif.
    * JPanels.java A simple example that illustrates creating panels. In Swing, a JPanel can contain custom borders. Typically, utility methods in the BorderFactory class are used to create a border for the panel. Uses the following class:
          o SixChoicePanel.java A JPanel that displays six radio buttons with labels.
    * JSliders.java Creates three common types of sliders: one without tick marks, one with tick marks, and one with both tick marks and labels.
    * JColorChooserTest.java Demonstrates the use of a JColorChooser which presents a dialog with three different tabbed panes to allow the user to select a color preference. The dialog returns a Color object based on the user's selection or null if the user entered Cancel.
    * JInternalFrames.java Illustrates the ability to create a Multiple Document Interface (MDI) application by placing internal frames (JInternalFrame) in a desktop pane (JDesktopPane).
    * JToolBarExample.java Small example showing the basic use of a JToolBar. Uses the following classes and images:
          o ToolBarButton.java A simple button that contains an image and a label for use in a toolbar.
          o BrowserToolBar.java A basic tool bar for holding multiple buttons.
          o Images used in the toolbar buttons: Help.gif, Home.gif, Left.gif, Print.gif, Right.gif, RotCCUp.gif, TrafficRed.gif.
    * Browser.java Implementation of a simple browser in Swing. The user can specify a URL to load into the browser (JEditorPane). By attaching an HyperlinkListener, the editor pane is responsive to hyperlinks selected by the user. Uses the following class and image:
          o JIconButton.java A simple button that the user can select to load the entered URL.
          o home.gif Image used in the button. 
    * JCheckBoxTest.java Simple example illustrating the use of check boxes.
    * JRadioButtonTest.java Creates three radio buttons and illustrates handling ItemEvents in response to selecting a radio button.
    * JOptionPaneExamples.java Creates various modal dialogs to show messages. Uses the follwoing classes:
          o JLabeledTextField.java A simple JPanel that combines a JLabel and a JTextField.
          o RadioButtonPanel.java Groups several radio buttons in a single row, with a label on the left.
          o DisableListener.java A listener that toggles the enabled status of some other component.

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

/** An example of shear transformations on a rectangle. 
 *
 ***********************

public class ShearExample extends JPanel {
  private static int gap=10, width=100;
  private Rectangle rect = new Rectangle(gap, gap, 100, 100);

  public void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2d = (Graphics2D)g;
    for (int i=0; i<5; i++) {
      g2d.setPaint(Color.red);
      g2d.fill(rect);
      // Each new square gets 0.2 more x shear.
      g2d.shear(0.2, 0.0);
      g2d.translate(2*gap + width, 0);
    }
  }

  public static void main(String[] args) {
    String title =
      "Shear: x shear ranges from 0.0 for the leftmost" +
      "'square' to 0.8 for the rightmost one.";
    WindowUtilities.openInJFrame(new ShearExample(),
                                 20*gap + 5*width, 
                                 5*gap + width,
                                 title);
  }
}

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From: http://sitestree.com/?p=10381
Categories:Programming Code Examples, Java/J2EE/J2ME, Drawing
Tags:Java/J2EE/J2MEDrawing
Post Data:2017-01-02 16:04:39

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