Java Code Examples for javax.swing.JFrame#setLayout()
The following examples show how to use
javax.swing.JFrame#setLayout() .
These examples are extracted from open source projects.
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Example 1
Source Project: filthy-rich-clients File: Triggers.java License: BSD 3-Clause "New" or "Revised" License | 6 votes |
private static void createAndShowGUI() { JFrame f = new JFrame("Triggers"); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setLayout(new BorderLayout()); JPanel buttonPanel = new JPanel(); buttonPanel.setLayout(new BorderLayout()); // Note: "Other Button" exists only to provide another component to // move focus from/to, in order to show how FocusTrigger works buttonPanel.add(new JButton("Other Button"), BorderLayout.NORTH); triggerButton = new JButton("Trigger"); buttonPanel.add(triggerButton, BorderLayout.SOUTH); f.add(buttonPanel, BorderLayout.NORTH); f.add(new Triggers(), BorderLayout.CENTER); f.pack(); f.setVisible(true); }
Example 2
Source Project: radiance File: GetCurrentSkin.java License: BSD 3-Clause "New" or "Revised" License | 6 votes |
/** * Opens a sample frame under the specified skin. * * @param skin * Skin. */ private void openSampleFrame(SubstanceSkin skin) { final JFrame sampleFrame = new JFrame(skin.getDisplayName()); sampleFrame.setLayout(new FlowLayout()); final JButton button = new JButton("Get skin"); button.addActionListener((ActionEvent e) -> SwingUtilities.invokeLater( () -> JOptionPane.showMessageDialog(sampleFrame, "Skin of this button is " + SubstanceCortex.ComponentScope.getCurrentSkin(button).getDisplayName()))); sampleFrame.add(button); sampleFrame.setVisible(true); sampleFrame.setSize(200, 100); sampleFrame.setLocationRelativeTo(null); sampleFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); SubstanceCortex.RootPaneScope.setSkin(sampleFrame.getRootPane(), skin); SwingUtilities.updateComponentTreeUI(sampleFrame); sampleFrame.repaint(); }
Example 3
Source Project: filthy-rich-clients File: RaceGUI.java License: BSD 3-Clause "New" or "Revised" License | 6 votes |
/** * Creates a new instance of RaceGUI */ public RaceGUI(String appName) { UIManager.put("swing.boldMetal", Boolean.FALSE); JFrame f = new JFrame(appName); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setLayout(new BorderLayout()); // Add Track view track = new TrackView(); f.add(track, BorderLayout.CENTER); // Add control panel controlPanel = new RaceControlPanel(); f.add(controlPanel, BorderLayout.SOUTH); f.pack(); f.setVisible(true); }
Example 4
Source Project: TinkerTime File: TinkerTimeLauncher.java License: GNU General Public License v3.0 | 5 votes |
@Override public void run() { // Get App Icons ImageManager imageManager = new ImageManager(); List<Image> appIcons = new ArrayList<Image>(); appIcons.add(imageManager.getImage("icon/app/icon 128x128.png")); appIcons.add(imageManager.getImage("icon/app/icon 64x64.png")); appIcons.add(imageManager.getImage("icon/app/icon 32x32.png")); appIcons.add(imageManager.getImage("icon/app/icon 16x16.png")); // Hide Splash Screen so the JFrame does not hide when appearing SplashScreen s = SplashScreen.getSplashScreen(); if (s != null){ s.close(); } // Initialize Frame JFrame frame = new JFrame(TinkerTimeLauncher.FULL_NAME); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLayout(new BorderLayout()); frame.setIconImages(appIcons); frame.setJMenuBar(menuBar); frame.add(toolBar, BorderLayout.NORTH); frame.add(modSelectorPanelController.getComponent(), BorderLayout.CENTER); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); frame.toFront(); }
Example 5
Source Project: haxademic File: VirtualCursor.java License: MIT License | 5 votes |
public void setup() { super.setup(); fxPanel = new JFXPanel(); jframe = (JFrame)((PSurfaceAWT.SmoothCanvas) getSurface().getNative()).getFrame(); jframe.removeNotify(); jframe.setUndecorated(true); jframe.setLayout(null); jframe.addNotify(); jframe.setAlwaysOnTop(true); jframe.add(fxPanel); jframe.setSize(750, 900); jframe.setVisible(true); jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Platform.runLater(new Runnable() { @Override public void run() { initFX(fxPanel); } }); // set special window properties jframe.setContentPane(fxPanel); fxPanel.setFocusable(false); fxPanel.setFocusTraversalKeysEnabled(false); fxPanel.requestFocus(); fxPanel.requestFocusInWindow(); }
Example 6
Source Project: openjdk-jdk9 File: PressedButtonRightClickTest.java License: GNU General Public License v2.0 | 5 votes |
public static void constructTestUI() { myFrame = new JFrame(); myFrame.setLayout(new BorderLayout()); myButton = new JButton("Whatever"); myFrame.add(myButton, BorderLayout.CENTER); myFrame.setSize(400, 300); myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); myFrame.setVisible(true); }
Example 7
Source Project: incubator-batchee File: DiagramGenerator.java License: Apache License 2.0 | 5 votes |
private JFrame createWindow(final VisualizationViewer<Node, Edge> viewer, final String name) { viewer.setBackground(Color.WHITE); final DefaultModalGraphMouse<Node, Edge> gm = new DefaultModalGraphMouse<Node, Edge>(); gm.setMode(DefaultModalGraphMouse.Mode.PICKING); viewer.setGraphMouse(gm); final JFrame frame = new JFrame(name + " viewer"); frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); frame.setLayout(new GridLayout()); frame.getContentPane().add(viewer); frame.pack(); return frame; }
Example 8
Source Project: marathonv5 File: AnnotateScreenCapture.java License: Apache License 2.0 | 5 votes |
public File saveToFile(File captureFile) throws FileNotFoundException, IOException { writePNG(captureFile); ImageReader reader = getPNGImageReader(); ImageInputStream iis = ImageIO.createImageInputStream(new FileInputStream(captureFile)); reader.setInput(iis); BufferedImage pngImage = reader.read(0); IIOMetadata imageMetadata = reader.getImageMetadata(0); Node root = imageMetadata.getAsTree(imageMetadata.getNativeMetadataFormatName()); IIOMetadataNode textNode = new IIOMetadataNode("tEXt"); ArrayList<Annotation> annotations = imagePanel.getAnnotations(); for (int i = 0; i < annotations.size(); i++) { textNode.appendChild(getAnnotationNode((Annotation) annotations.get(i), i)); } root.appendChild(textNode); imageMetadata.mergeTree(imageMetadata.getNativeMetadataFormatName(), root); IIOImage imageWrite = new IIOImage(pngImage, new ArrayList<BufferedImage>(), imageMetadata); ImageWriter writer = getPNGImageWriter(); ImageOutputStream ios = ImageIO.createImageOutputStream(new FileOutputStream(captureFile)); writer.setOutput(ios); writer.write(imageWrite); writer.dispose(); JFrame frame = new JFrame(); frame.setLayout(new BorderLayout()); ImagePanel finalImage = new ImagePanel(new FileInputStream(captureFile), false); frame.add(finalImage, BorderLayout.CENTER); frame.pack(); File savedFile = new File(captureFile.getParentFile(), "ext-" + captureFile.getName()); getScreenShot(frame.getContentPane(), savedFile); frame.dispose(); return savedFile; }
Example 9
Source Project: MikuMikuStudio File: RayTrace.java License: BSD 2-Clause "Simplified" License | 5 votes |
public void show(){ frame = new JFrame("HDR View"); label = new JLabel(new ImageIcon(image)); frame.getContentPane().add(label); frame.setLayout(new FlowLayout()); frame.pack(); frame.setVisible(true); }
Example 10
Source Project: dctb-utfpr-2018-1 File: JToggleButtonDemo.java License: Apache License 2.0 | 5 votes |
JToggleButtonDemo() { //CRIA UM CONTEINER JFRAME JFrame jfrm = new JFrame(" EXEMPLO DE JToggleButton - botão de alternância"); //ESPECIFICA FLOWLAYOUT COMO GERENCIADOR DE LEIAUTE jfrm.setLayout(new FlowLayout()); //FORNECE UM TAMANHO INICIAL PAR AO QUADRO jfrm.setSize(250, 100); //ENCERRA O PROGRAMA QUANDO O USUÁRIO FECHA O APLICATIVO jfrm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //CRIA UM RÓTULO jlab = new JLabel(" O BOTÃO NÃO ESTÁ SELECIONADO "); //CRIA UM BOTÃO DE ALTERNÂNCIA jtbn = new JToggleButton("On/Off"); // ADICIONA UM OUVINTE DE ITENS PARA O BOTÃO DE ALTERNÂNCIA //USA UM ITEM LISTENER PARA TRATAR EVENTOS DO BOTÃO DE ALTERNÂNCIA //USA IS SELECTED() PARA DETERMINAR O ESTADO DO BOTÃO jtbn.addItemListener(new ItemListener() { public void itemStateChanged(ItemEvent ie) { if (jtbn.isSelected()) { jlab.setText(" O BOTÃO ESTÁ SELECIONADO" ); } else { jlab.setText(" O BOTÃO NÃO ESTÁ SELECIONADO."); } } }); // ADICIONA O BOTÃO DE ALTERNÂNCIA E O RÓTULO AO PAINEL DE CONTEÚDO jfrm.add(jtbn); jfrm.add(jlab); // Display the frame. jfrm.setVisible(true); }
Example 11
Source Project: GIFKR File: DebugUtils.java License: GNU Lesser General Public License v3.0 | 5 votes |
public static void displayImage(Image img) { JFrame f = new JFrame("DEBUG IMG"); JLabel label = new JLabel(new ImageIcon(img)); label.setBorder(BorderFactory.createLineBorder(Color.RED)); f.setLayout(new BorderLayout()); f.add(label, BorderLayout.WEST); f.pack(); f.setVisible(true); f.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE); }
Example 12
Source Project: openjdk-jdk9 File: ComponentResizeTest.java License: GNU General Public License v2.0 | 5 votes |
private static void createAndShowGUI() { demoFrame = new JFrame(); demoFrame.setSize(300, 300); demoFrame.setLayout(new FlowLayout()); demoFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); demoFrame.setUndecorated(true); demoFrame.setBackground(new Color(0f, 0, 0, 0.1f)); JCheckBox b = new JCheckBox("Whatever"); demoFrame.paintAll(null); b.setOpaque(true); demoFrame.add(b); demoFrame.add(new JButton()); demoFrame.setVisible(true); }
Example 13
Source Project: PyramidShader File: RotatedLabel.java License: GNU General Public License v3.0 | 5 votes |
/** * Test method. * * @param args * command line arguments. */ public static void main(String[] args) { JFrame f = new JFrame("Test"); f.setLayout(new FlowLayout()); RotatedLabel rl = new RotatedLabel("BLAHBLAH"); rl.setBackground(Color.ORANGE); rl.setOpaque(true); rl.setDirection(Direction.VERTICAL_DOWN); f.add(rl); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.pack(); f.setVisible(true); }
Example 14
Source Project: gpu-nbody File: NBodyVisualizer.java License: MIT License | 4 votes |
/** * Creates a new JOCLSimpleGL3 sample. * * @param capabilities * The GL capabilities */ public NBodyVisualizer(final GLCapabilities capabilities) { glComponent = new GLCanvas(capabilities); glComponent.setFocusable(true); glComponent.addGLEventListener(this); // Initialize the mouse and keyboard controls final MouseControl mouseControl = new MouseControl(); glComponent.addMouseMotionListener(mouseControl); glComponent.addMouseWheelListener(mouseControl); final KeyboardControl keyboardControl = new KeyboardControl(); glComponent.addKeyListener(keyboardControl); setFullscreen(); updateModelviewMatrix(); // Create and start an animator animator = new Animator(glComponent); animator.start(); // Create the simulation // simulation = new GPUBarnesHutNBodySimulation(Mode.GL_INTEROP, 2048 * 16, new SerializedUniverseGenerator("universes/sphericaluniverse1.universe")); // simulation = new GPUBarnesHutNBodySimulation(Mode.GL_INTEROP, 2048 * 16, new SerializedUniverseGenerator("universes/montecarlouniverse1.universe")); // simulation = new GPUBarnesHutNBodySimulation(Mode.GL_INTEROP, 2048 * 16, new RotatingDiskGalaxyGenerator(3.5f, 25, 0)); simulation = new GPUBarnesHutNBodySimulation(Mode.GL_INTEROP, 2048 * 16, new RotatingDiskGalaxyGenerator(3.5f, 1, 1)); // simulation = new GPUBarnesHutNBodySimulation(Mode.GL_INTEROP, 2048 * 16, new SphericalUniverseGenerator()); // simulation = new GPUBarnesHutNBodySimulation(Mode.GL_INTEROP, 2048 * 16, new LonLatSphericalUniverseGenerator()); // simulation = new GPUBarnesHutNBodySimulation(Mode.GL_INTEROP, 2048 * 16, new RandomCubicUniverseGenerator(5)); // simulation = new GPUBarnesHutNBodySimulation(Mode.GL_INTEROP, 2048 * 16, new MonteCarloSphericalUniverseGenerator()); // simulation = new GpuNBodySimulation(Mode.GL_INTEROP, 2048 * 8, new LonLatSphericalUniverseGenerator()); // simulation = new GpuNBodySimulation(Mode.GL_INTEROP, 2048, new PlummerUniverseGenerator()); // simulation = new GpuNBodySimulation(Mode.GL_INTEROP, 128, new SphericalUniverseGenerator()); // Create the main frame frame = new JFrame("NBody Simulation"); frame.addWindowListener(new WindowAdapter() { @Override public void windowClosing(final WindowEvent e) { runExit(); } }); frame.setLayout(new BorderLayout()); frame.add(glComponent, BorderLayout.CENTER); frame.setUndecorated(true); frame.setExtendedState(JFrame.MAXIMIZED_BOTH); frame.setVisible(true); frame.setLocationRelativeTo(null); glComponent.requestFocus(); }
Example 15
Source Project: training File: Undoner.java License: MIT License | 4 votes |
public static void main(String[] args) throws IOException { List<String> projects = searchUndoableProjects(); JFrame frame = new JFrame(); frame.setSize(300, 150); frame.setLayout(new BorderLayout()); // // JCheckBox cleanFolder = new JCheckBox("Clean destination folder", isVictorMachine()); // if (isVictorMachine()) { // cleanFolder.setEnabled(false); // } // frame.add(cleanFolder, BorderLayout.NORTH); JPanel panel2 = new JPanel(); panel2.setLayout(new BorderLayout()); JComboBox<String> projectsCombo = new JComboBox<>(projects.stream().sorted().collect(toList()).toArray(new String[0])); panel2.add(projectsCombo, BorderLayout.CENTER); panel2.add(new JLabel("Revert solution for project:"), BorderLayout.NORTH); final JCheckBox clearEntityAnnotations = new JCheckBox("Clear Entity annotations"); panel2.add(clearEntityAnnotations, BorderLayout.SOUTH); frame.add(panel2, BorderLayout.CENTER); JButton button = new JButton("UNDO ("+(isVictorMachine()?"Victor":"Trainee") +")"); frame.add(button, BorderLayout.SOUTH); button.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent arg0) { // if (cleanFolder.isSelected()) { // cleanDestFolder(); // } File inputSrcFolder = new File(getFolderContainingTheProjects(), projectsCombo.getSelectedItem() + "");// + "/src/main"); boolean undone; if (isVictorMachine()) { try { FileUtils.copyDirectoryToDirectory(inputSrcFolder, new File("../../training-undone/")); } catch (IOException e) { throw new RuntimeException(e); } File rootToUndone = new File("../../training-undone/"+projectsCombo.getSelectedItem()); undone = undoFolders(rootToUndone, rootToUndone, false, clearEntityAnnotations.isSelected()); } else { undone = undoFolders(inputSrcFolder, inputSrcFolder, false, clearEntityAnnotations.isSelected()); } JOptionPane.showMessageDialog(null, undone ? "Undone. Good luck!\n\nRemember: To see the solved version, HARD reset your worspace." : "Nothing to undo (already undone?)"); } }); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Dimension dim = Toolkit.getDefaultToolkit().getScreenSize(); frame.setLocation(dim.width/2-frame.getSize().width/2, dim.height/2-frame.getSize().height/2); frame.setTitle("Revert solution for project..."); frame.show(); }
Example 16
Source Project: Pixie File: ImagePanel.java License: MIT License | 4 votes |
/** * The entry point of application. * * @param args the input arguments */ public static void main(String[] args) { // create the panel with the image ImagePanel imgPanel = new ImagePanel(Icons.SPLASH_SCREEN_PATH); // create the frame which will display the panel JFrame frame = new JFrame("Image Panel Preview"); frame.setLayout(new FlowLayout()); frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); imgPanel.setPanelTitle("Pixie", new int[]{15, 5, 5, 5}); // add the panel to the frame frame.add(imgPanel); // prepare frame for display frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); }
Example 17
Source Project: openjdk-jdk9 File: WrongEditorTextFieldFont.java License: GNU General Public License v2.0 | 4 votes |
private static void testDefaultFont(final JFrame frame) { final JSpinner spinner = new JSpinner(); final JSpinner spinner_u = new JSpinner(); frame.setLayout(new FlowLayout(FlowLayout.CENTER, 50, 50)); frame.getContentPane().add(spinner); frame.getContentPane().add(spinner_u); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); final DefaultEditor ed = (DefaultEditor) spinner.getEditor(); final DefaultEditor ed_u = (DefaultEditor) spinner_u.getEditor(); ed_u.getTextField().setFont(USERS_FONT); for (int i = 5; i < 40; i += 5) { /* * Validate that the font of the text field is changed to the * font of JSpinner if the font of text field was not set by the * user. */ final Font tff = ed.getTextField().getFont(); if (!(tff instanceof UIResource)) { throw new RuntimeException("Font must be UIResource"); } if (spinner.getFont().getSize() != tff.getSize()) { throw new RuntimeException("Rrong size"); } spinner.setFont(new Font("dialog", Font.BOLD, i)); /* * Validate that the font of the text field is NOT changed to the * font of JSpinner if the font of text field was set by the user. */ final Font tff_u = ed_u.getTextField().getFont(); if (tff_u instanceof UIResource || !tff_u.equals(USERS_FONT)) { throw new RuntimeException("Font must NOT be UIResource"); } if (spinner_u.getFont().getSize() == tff_u.getSize()) { throw new RuntimeException("Wrong size"); } spinner_u.setFont(new Font("dialog", Font.BOLD, i)); } }
Example 18
Source Project: dctb-utfpr-2018-1 File: Sliders.java License: Apache License 2.0 | 4 votes |
public static void main(String[] args) { // Create and set up a frame window JFrame.setDefaultLookAndFeelDecorated(true); JFrame frame = new JFrame("Slider with change listener"); frame.setSize(500, 500); frame.setLayout(new GridLayout(3, 1)); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Set the panel to add buttons JPanel panel1 = new JPanel(); JPanel panel2 = new JPanel(); // Add status label to show the status of the slider JLabel status = new JLabel("Slide the slider and you can get its value", JLabel.CENTER); // Set the slider JSlider slider = new JSlider(); slider.setMinorTickSpacing(10); slider.setPaintTicks(true); // Set the labels to be painted on the slider slider.setPaintLabels(true); // Add positions label in the slider Hashtable<Integer, JLabel> position = new Hashtable<Integer, JLabel>(); position.put(0, new JLabel("0")); position.put(50, new JLabel("50")); position.put(100, new JLabel("100")); // Set the label to be drawn slider.setLabelTable(position); // Add change listener to the slider slider.addChangeListener(new ChangeListener() { public void stateChanged(ChangeEvent e) { status.setText("Value of the slider is: " + ((JSlider)e.getSource()).getValue()); } }); // Add the slider to the panel panel1.add(slider); // Set the window to be visible as the default to be false frame.add(panel1); frame.add(status); frame.add(panel2); frame.pack(); frame.setVisible(true); }
Example 19
Source Project: lwjgl3-awt File: Core32Test.java License: MIT License | 4 votes |
public static void main(String[] args) { JFrame frame = new JFrame("AWT test"); frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); frame.setLayout(new BorderLayout()); frame.setPreferredSize(new Dimension(600, 600)); GLData data = new GLData(); data.samples = 4; data.swapInterval = 0; data.majorVersion = 3; data.minorVersion = 2; data.profile = GLData.Profile.CORE; AWTGLCanvas canvas; frame.add(canvas = new AWTGLCanvas(data) { private static final long serialVersionUID = 1L; int aspectUniform; public void initGL() { System.out.println("OpenGL version: " + effective.majorVersion + "." + effective.minorVersion + " (Profile: " + effective.profile + ")"); createCapabilities(); glClearColor(0.3f, 0.4f, 0.5f, 1); glBindVertexArray(glGenVertexArrays()); int vbo = glGenBuffers(); glBindBuffer(GL_ARRAY_BUFFER, vbo); glBufferData(GL_ARRAY_BUFFER, new float[] { -0.5f, 0, 0, -0.5f, 0.5f, 0, 0.5f, 0, 0, 0.5f, -0.5f, 0 }, GL_STATIC_DRAW); glVertexAttribPointer(0, 2, GL_FLOAT, false, 0, 0L); glEnableVertexAttribArray(0); int vs = glCreateShader(GL_VERTEX_SHADER); glShaderSource(vs, "#version 150 core\nuniform float aspect;in vec2 vertex;void main(void){gl_Position=vec4(vertex/vec2(aspect, 1.0), 0.0, 1.0);}"); glCompileShader(vs); if (glGetShaderi(vs, GL_COMPILE_STATUS) == 0) throw new AssertionError("Could not compile vertex shader: " + glGetShaderInfoLog(vs)); int fs = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(fs, "#version 150 core\nout vec4 color;void main(void){color=vec4(0.4, 0.6, 0.8, 1.0);}"); glCompileShader(fs); if (glGetShaderi(fs, GL_COMPILE_STATUS) == 0) throw new AssertionError("Could not compile fragment shader: " + glGetShaderInfoLog(fs)); int prog = glCreateProgram(); glAttachShader(prog, vs); glAttachShader(prog, fs); glLinkProgram(prog); if (glGetProgrami(prog, GL_LINK_STATUS) == 0) throw new AssertionError("Could not link program: " + glGetProgramInfoLog(prog)); glUseProgram(prog); aspectUniform = glGetUniformLocation(prog, "aspect"); } public void paintGL() { int w = getWidth(); int h = getHeight(); float aspect = (float) w / h; glClear(GL_COLOR_BUFFER_BIT); glViewport(0, 0, w, h); glUniform1f(aspectUniform, aspect); glDrawArrays(GL_TRIANGLES, 0, 6); this.swapBuffers(); this.repaint(); } }, BorderLayout.CENTER); frame.pack(); frame.setVisible(true); frame.transferFocus(); Runnable renderLoop = new Runnable() { public void run() { if (!canvas.isValid()) return; canvas.render(); SwingUtilities.invokeLater(this); } }; SwingUtilities.invokeLater(renderLoop); }
Example 20
Source Project: openjdk-jdk9 File: bug8033699.java License: GNU General Public License v2.0 | 4 votes |
private static void createAndShowGUI() { mainFrame = new JFrame("Bug 8033699 - 8 Tests for Grouped/Non Group Radio Buttons"); btnStart = new JButton("Start"); btnEnd = new JButton("End"); btnMiddle = new JButton("Middle"); JPanel box = new JPanel(); box.setLayout(new BoxLayout(box, BoxLayout.Y_AXIS)); box.setBorder(BorderFactory.createTitledBorder("Grouped Radio Buttons")); radioBtn1 = new JRadioButton("A"); radioBtn2 = new JRadioButton("B"); radioBtn3 = new JRadioButton("C"); ButtonGroup btnGrp = new ButtonGroup(); btnGrp.add(radioBtn1); btnGrp.add(radioBtn2); btnGrp.add(radioBtn3); radioBtn1.setSelected(true); box.add(radioBtn1); box.add(radioBtn2); box.add(btnMiddle); box.add(radioBtn3); radioBtnSingle = new JRadioButton("Not Grouped"); radioBtnSingle.setSelected(true); mainFrame.getContentPane().add(btnStart); mainFrame.getContentPane().add(box); mainFrame.getContentPane().add(radioBtnSingle); mainFrame.getContentPane().add(btnEnd); mainFrame.getRootPane().setDefaultButton(btnStart); btnStart.requestFocus(); mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); mainFrame.setLayout(new BoxLayout(mainFrame.getContentPane(), BoxLayout.Y_AXIS)); mainFrame.setSize(300, 300); mainFrame.setLocation(200, 200); mainFrame.setVisible(true); mainFrame.toFront(); }