Examples of java.awt.Checkbox

java.awt.Checkbox
A check box is a graphical component that can be in either an "on" (true) or "off" (false) state. Clicking on a check box changes its state from "on" to "off," or from "off" to "on."
The following code example creates a set of check boxes in a grid layout:
```
 setLayout(new GridLayout(3, 1)); add(new Checkbox("one", null, true)); add(new Checkbox("two")); add(new Checkbox("three")); 
```
This image depicts the check boxes and grid layout created by this code example:

The button labeled one is in the "on" state, and the other two are in the "off" state. In this example, which uses the GridLayout class, the states of the three check boxes are set independently.
Alternatively, several check boxes can be grouped together under the control of a single object, using the CheckboxGroup class. In a check box group, at most one button can be in the "on" state at any given time. Clicking on a check box to turn it on forces any other check box in the same group that is on into the "off" state. @version 1.89 10/31/08 @author Sami Shaio @see java.awt.GridLayout @see java.awt.CheckboxGroup @since JDK1.0

          runSuite();
        }
      }
    );
    boolean useLoader= useReloadingTestSuiteLoader();
    fUseLoadingRunner= new Checkbox("Reload classes every run", useLoader);
    if (inVAJava())
      fUseLoadingRunner.setVisible(false);


    //---- second section
    fProgressIndicator= new ProgressBar();

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  buildConstraints(_constraints, 0, 1, 2, 1, 1, 1);
  _constraints.fill = GridBagConstraints.HORIZONTAL;
  _interval_gbl.setConstraints(m_interval_tf, _constraints);
  _interval_panel.add(m_interval_tf);


  m_disable_box = new Checkbox("Disable automatic refresh");
  m_disable_box.setState(m_model.m_refresh_disabled);
  buildConstraints(_constraints, 0, 2, 2, 1, 1, 1);
  _constraints.fill = GridBagConstraints.HORIZONTAL;
  _interval_gbl.setConstraints(m_disable_box, _constraints);
  _interval_panel.add(m_disable_box);

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            ((GridLayout) p.getLayout()).setVgap(5);


            final CheckboxGroup cg = new CheckboxGroup();
            final Checkbox[] boxes = new Checkbox[3];
            for (int i = 0; i < 3; ++i) {
                boxes[i] = new Checkbox("button" + i, cg, i == 0);
                p.add(boxes[i]);
            }


            add(p, "North");

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            Panel east_panel = new Panel();
            east_panel.setLayout(new GridLayout(0, 1));


            CheckboxGroup group = new CheckboxGroup();
            Checkbox cb = new Checkbox("one", group, true);
            east_panel.add(cb);
            cb = new Checkbox("two", group, false);
            east_panel.add(cb);


            add(east_panel, "East");


            final Button wb = new Button();

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        add(b, BorderLayout.CENTER);
        b.setBackground(Color.YELLOW);


        final Button b2 = new Button("Left");
        final Scrollbar sb = new Scrollbar(Scrollbar.HORIZONTAL);
        final Checkbox cb1 = new Checkbox("Right");


        add(b2, BorderLayout.WEST);
        b2.setBackground(Color.RED);
        b2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                System.out.println("Action on b2");
                if (sb.getValue() + sb.getBlockIncrement() <= sb.getMaximum()) {
                    sb.setValue(sb.getValue() + sb.getBlockIncrement());
                } else {
                    Frame f2 = new Frame("New frame");
                    f2.setSize(200, 100);
                    f2.setVisible(true);
                }
            }
        });


        add(cb1, BorderLayout.EAST);
        cb1.setBackground(Color.WHITE);


        final TextField tf = new TextField();
        tf.setText("Let's type here");
        add(tf, BorderLayout.SOUTH);

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            Panel p = new Panel();
            p.setLayout(new GridLayout(3, 1));
            ((GridLayout) p.getLayout()).setHgap(5);
            ((GridLayout) p.getLayout()).setVgap(5);


            editable = new Checkbox("Editable", true);
            p.add(editable);
            editable.addItemListener(this);


            visible = new Checkbox("Visible", true);
            p.add(visible);
            visible.addItemListener(this);


            sensitive = new Checkbox("Sensitive", true);
            p.add(sensitive);
            sensitive.addItemListener(this);


            add(p, "Center");

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   */
  public void test(TestHarness harness)
  {
    Robot r = harness.createRobot ();
    Frame frame = new Frame();
    Checkbox checkbox = new Checkbox("Checkbox");
    frame.add(checkbox);
    frame.setBounds(0, 0, 100, 100);
    
    harness.check(checkbox.getCheckboxGroup(), null);
    CheckboxGroup group = new CheckboxGroup();
    checkbox.setCheckboxGroup(group);
    harness.check(group, checkbox.getCheckboxGroup());
    frame.setVisible(true);
    
    r.waitForIdle ();
    r.delay(1000);
    
    checkbox.setCheckboxGroup(null);
    
    r.delay(1000);
    
    harness.check(checkbox.getCheckboxGroup(), null);
  }

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   */
  public void test(TestHarness harness)
  {
    setBackground(Color.red);
    Frame f = new Frame();
    Checkbox c = new Checkbox("check!");
    c.setBackground(Color.blue);
    add(c);
    f.add(this);
    f.pack();
    f.show();
    Point loc = f.getLocationOnScreen();
    Rectangle bounds = c.getBounds();
    Insets i = f.getInsets();
    bounds.x += i.left + loc.x;
    bounds.y += i.top + loc.y;
    
    Robot r = harness.createRobot();

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        tDestAlter = new TextField();


        tDestAlter.addActionListener(this);


        cTransfer = new Checkbox("Transfer to destination table", true);


        cTransfer.addItemListener(this);


        cDrop = new Checkbox("Drop destination table (ignore error)", true);


        cDrop.addItemListener(this);


        cCreate = new Checkbox("Create destination table", true);


        cCreate.addItemListener(this);


        cDropIndex = new Checkbox("Drop destination index (ignore error)",
                                  true);


        cDropIndex.addItemListener(this);


        cIdxForced = new Checkbox("force Idx_ prefix for indexes names",
                                  false);


        cIdxForced.addItemListener(this);


        cCreateIndex = new Checkbox("Create destination index", true);


        cCreateIndex.addItemListener(this);


        cDelete = new Checkbox("Delete rows in destination table", true);


        cDelete.addItemListener(this);


        cInsert = new Checkbox("Insert into destination", true);


        cInsert.addItemListener(this);


        cFKForced = new Checkbox("force FK_ prefix for foreign key names",
                                 false);


        cFKForced.addItemListener(this);


        cAlter = new Checkbox("Alter destination table", true);


        cAlter.addItemListener(this);
        p.add(createLabel("Source table"));
        p.add(tSourceTable);
        p.add(cTransfer);

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        goalL = new Label(Messages.getString("MegaMek.goalL"), Label.RIGHT); //$NON-NLS-1$
        goalF = new TextField(Integer.toString(goalNumber), 2);
        goalL.setEnabled(register);
        goalF.setEnabled(register);


        registerC = new Checkbox(Messages.getString("MegaMek.registerC")); //$NON-NLS-1$
        register = false;
        registerC.setState(register);
        registerC.addItemListener(new ItemListener() {
            public void itemStateChanged(ItemEvent event) {
                boolean state = false;

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