MELJUN CORTES's - JAVA GUI Source Code & Handouts

8/9/2019 MELJUN CORTES's - JAVA GUI Source Code & Handouts

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An Introduction to Java GUI Programmingimport javax.swing.*;import java.awt.Color;import java.awt.event.ActionListener;import java.awt.event.ActionEvent;

public class MELJUN_Button implements ActionListener{ // Definition of global values and items that are part of the GUI.

int redScoreAmount = 0;

int blueScoreAmount = 0;

JPanel titlePanel, scorePanel, buttonPanel;JLabel redLabel, blueLabel, redScore, blueScore;JButton redButton, blueButton, resetButton;

public JPanel createContentPane (){ // We create a bottom JPanel to place everything on.

JPanel totalGUI = new JPanel();totalGUI.setLayout(null);

// Creation of a Panel to contain the title labels

titlePanel = new JPanel();titlePanel.setLayout(null);titlePanel.setLocation(10, 0);

titlePanel.setSize(250, 30);totalGUI.add(titlePanel);

redLabel = new JLabel("Red Team");redLabel.setLocation(0, 0);redLabel.setSize(120, 30);redLabel.setHorizontalAlignment(0);redLabel.setForeground(Color.red);titlePanel.add(redLabel);

blueLabel = new JLabel("Blue Team");blueLabel.setLocation(130, 0);blueLabel.setSize(120, 30);blueLabel.setHorizontalAlignment(0);blueLabel.setForeground(Color.blue);

titlePanel.add(blueLabel);

// Creation of a Panel to contain the score labels.

scorePanel = new JPanel();scorePanel.setLayout(null);scorePanel.setLocation(10, 40);scorePanel.setSize(260, 30);totalGUI.add(scorePanel);

redScore = new JLabel(""+redScoreAmount);redScore.setLocation(0, 0);redScore.setSize(120, 30);redScore.setHorizontalAlignment(0);scorePanel.add(redScore);

blueScore = new JLabel(""+blueScoreAmount);blueScore.setLocation(130, 0);blueScore.setSize(120, 30);blueScore.setHorizontalAlignment(0);scorePanel.add(blueScore);

// Creation of a Panel to contain all the JButtons.

buttonPanel = new JPanel();buttonPanel.setLayout(null);buttonPanel.setLocation(10, 80);buttonPanel.setSize(260, 70);totalGUI.add(buttonPanel);

// We create a button and manipulate it using the syntax we have

// used before. Now each button has an ActionListener which posts

// its action out when the button is pressed.

Filename/Class Name: MELJUN_Button

Project Name: MELJUN_Button



redButton = new JButton("Red Score!");redButton.setLocation(0, 0);redButton.setSize(120, 30);redButton.addActionListener(this);buttonPanel.add(redButton);

blueButton = new JButton("Blue Score!");blueButton.setLocation(130, 0);blueButton.setSize(120, 30);blueButton.addActionListener(this);buttonPanel.add(blueButton);

resetButton = new JButton("Reset Score");resetButton.setLocation(0, 40);resetButton.setSize(250, 30);resetButton.addActionListener(this);buttonPanel.add(resetButton);

totalGUI.setOpaque(true);

return totalGUI;}

// This is the new ActionPerformed Method.

// It catches any events with an ActionListener attached.

// Using an if statement, we can determine which button was pressed

// and change the appropriate values in our GUI.

public void actionPerformed(ActionEvent e) { if(e.getSource() == redButton)

{redScoreAmount = redScoreAmount + 1;redScore.setText(""+redScoreAmount);

} else if(e.getSource() == blueButton)

{blueScoreAmount = blueScoreAmount + 1;blueScore.setText(""+blueScoreAmount);

} else if(e.getSource() == resetButton)

{redScoreAmount = 0;blueScoreAmount = 0;redScore.setText(""+redScoreAmount);blueScore.setText(""+blueScoreAmount);

}}

private static void createAndShowGUI() {

JFrame.setDefaultLookAndFeelDecorated(true);JFrame frame = new JFrame("[=] JButton Scores! [=]");

//Create and set up the content pane.

MELJUN_Button demo = new MELJUN_Button(); frame.setContentPane(demo.createContentPane());frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setSize(280, 190);frame.setVisible(true);

}

public static void main(String[] args) { //Schedule a job for the event-dispatching thread:

//creating and showing this application's GUI.

SwingUtilities.invokeLater(new Runnable() { public void run() {

createAndShowGUI();}

});}

}



An Introduction to Java GUI Programming

Beginner into the world of Java GUI programming

Java GUI programming involves two packages: the original abstract windows kit (AWT) and the newerSwing toolkit. Swing components have the prefix J to distinguish them from the original AWT ones

(e.g. JFrame instead of Frame). To include Swing components and methods in your project, you must

import the java.awt.*, java.awt.event.*, and javax.swing.* packages. Displayable frames are top-level

containers such as JFrame,JWindows, JDialog, and JApplet, which interface with the operating system

window manager. Non-displaying content panes are intermediate containers suchas JPanel, JOptionsPane, JScrollPane, and JSplitPane. Containers are therefore widgets or GUI

controls that are used to hold and group other widgets such as text boxes, check boxes, radio buttons, et a

In .NET the main UI, called the Windows Form, holds the controls that are dragged and dropped onto thecontrol surface. Every GUI starts with a window meant to display things. In Swing, there are three types o

windows: the Applet, the Dialog, and the Frame. These interface with the windows manager. In swing,a frame object is called a JFrame. A JFrame is considered the top most container. These are also called

displayable frames. Non-displaying content panes are intermediate containers suchas JPanel,JScrollPane, JLayeredPane, JSplitPane and JTabbedPane which organize the layout

structure when multiple controls are being used. Stated simply, the content pane is where we place out texfields are other widgets, so to add and display GUI controls, we need to specify that it is the content pane

that we are adding to. The content pane is then at the top of a containment hierarchy, in which this tree-li

hierarchy has a top-level container (in our case JFrame). Working down the tree, we would find other toplevel containers like JPanel to hold the components. Here is the code that produces a simple frame upo

to build on:

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

public class Frame1 extends JFrame{JPanel pane = new JPanel();Frame1() // the frame constructor method

{ super("My Simple Frame"); setBounds(100,100,300,100);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container con = this.getContentPane(); // inherit main framecon.add(pane); // add the panel to frame

// customize panel here

// pane.add(someWidget);

setVisible(true); // display this frame

} public static void main(String args[]) {new Frame1();}}



If you have never compiled Java code, then consider this basic code in order to show the compilation andinterpretation process. As .NET compilers emit IL code and metadata, where the metadata tables are read

by the CLR to verify type safety (that is, that the correct data types are passed to the correct methods), th

JIT compiler converts the IL code into native code for execution. There is no interpretation as there is withthe Java Virtual Machine. The Java platform is defined by the APIs (collections of compiled libraries for use

programs and the JVM (which is similar to the CLR). A Java source code file is compiled into byte code

wherein a class file is generated that functions as a blueprint for the runtime execution. Here is an exampl

import java.util.*;public class Sys {public static void main(String[] args) {System.out.println

(“This is a string passed to the print line method of the System class”);}}

c:\Sun\SDK\jdk\bin>java.exe Sys // the java.exe interprets the byte code file// (in the same directory where the class file is.

This is a string passed to the print line method of the System class.

Here is code that show a GUI with a button.

The button, however, does nothing when pressed:

import java.awt.*;import java.awt.event.*;import javax.swing.*;public class Frame2 extends JFrame{

JPanel pane = new JPanel();JButton pressme = new JButton("Press Me");Frame2() // the frame constructor

{ super("JPrompt Demo"); setBounds(100,100,300,200);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);Container con = this.getContentPane(); // inherit main frame

con.add(pane); // JPanel containers default to FlowLayout

pressme.setMnemonic('P'); // associate hotkey to button

pane.add(pressme); pressme.requestFocus();setVisible(true); // make frame visible

} public static void main(String args[]) {new Frame2();}}

C:\...\bin>Javac.exe Frame2.java

C:\...\bin>Java.exe Frame2



Java GUIs are event based as they respond to the standard input devices like key presses, mouse-clicks,radio buttons, etc. Here is the output of the button press:

import java.awt.*;import java.awt.event.*;import javax.swing.*;public class Frame3 extends JFrame implements ActionListener{JLabel answer = new JLabel("");JPanel pane = new JPanel(); // create pane object

JButton pressme = new JButton("Press Me");Frame3() // the constructor

{ super("Event Handler Demo"); setBounds(100,100,300,200);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);Container con = this.getContentPane(); // inherit main frame

con.add(pane); pressme.setMnemonic('P'); // associate hotkey

pressme.addActionListener(this); // register button listener

pane.add(answer); pane.add(pressme); pressme.requestFocus();setVisible(true); // make frame visible

} // here is the basic event handler

public void actionPerformed(ActionEvent event){Object source = event.getSource();

if (source == pressme){answer.setText("Button pressed!");JOptionPane.showMessageDialog(null,"I hear you!","Message Dialog",JOptionPane.PLAIN_MESSAGE); setVisible(true); // show something

}}

public static void main(String args[]) {new Frame3();}}





// used before.

JButton redButton = new JButton("Red Score!");redButton.setLocation(0, 0);redButton.setSize(100, 30);buttonPanel.add(redButton);

JButton blueButton = new JButton("Blue Score!");blueButton.setLocation(120, 0);blueButton.setSize(100, 30);buttonPanel.add(blueButton);

JButton resetButton = new JButton("Reset Score");

resetButton.setLocation(0, 40);resetButton.setSize(220, 30);buttonPanel.add(resetButton);

totalGUI.setOpaque(true); return totalGUI;

}




ButtonExample demo = new ButtonExample();

frame.setContentPane(demo.createContentPane());

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setSize(250, 190);frame.setVisible(true);

}

public static void main(String[] args) { //Schedule a job for the event-dispatching thread:




});

}}

OUTPUT



Nothing will happen when the buttons are pressed as the event listener is needed:

import javax.swing.*;import java.awt.Color;import java.awt.event.ActionListener;import java.awt.event.ActionEvent;

public class ButtonDemo_Extended implements ActionListener{

// Definition of global values and items that are part of the GUI.

int redScoreAmount = 0; int blueScoreAmount = 0;

JPanel titlePanel, scorePanel, buttonPanel;JLabel redLabel, blueLabel, redScore, blueScore;JButton redButton, blueButton, resetButton;

public JPanel createContentPane (){

// We create a bottom JPanel to place everything on.

JPanel totalGUI = new JPanel();totalGUI.setLayout(null);

// Creation of a Panel to contain the title labels

titlePanel = new JPanel();titlePanel.setLayout(null);titlePanel.setLocation(10, 0);titlePanel.setSize(250, 30);totalGUI.add(titlePanel);

redLabel = new JLabel("Red Team");redLabel.setLocation(0, 0);redLabel.setSize(120, 30);redLabel.setHorizontalAlignment(0);redLabel.setForeground(Color.red);titlePanel.add(redLabel);

blueLabel = new JLabel("Blue Team");blueLabel.setLocation(130, 0);blueLabel.setSize(120, 30);blueLabel.setHorizontalAlignment(0);blueLabel.setForeground(Color.blue);titlePanel.add(blueLabel);

// Creation of a Panel to contain the score labels.

scorePanel = new JPanel();scorePanel.setLayout(null);scorePanel.setLocation(10, 40);scorePanel.setSize(260, 30);totalGUI.add(scorePanel);

redScore = new JLabel(""+redScoreAmount);redScore.setLocation(0, 0);redScore.setSize(120, 30);redScore.setHorizontalAlignment(0);scorePanel.add(redScore);

blueScore = new JLabel(""+blueScoreAmount);blueScore.setLocation(130, 0);blueScore.setSize(120, 30);blueScore.setHorizontalAlignment(0);scorePanel.add(blueScore);

// Creation of a Panel to contain all the JButtons.

buttonPanel = new JPanel();buttonPanel.setLayout(null);buttonPanel.setLocation(10, 80);



buttonPanel.setSize(260, 70);totalGUI.add(buttonPanel);

// We create a button and manipulate it using the syntax we have

// used before. Now each button has an ActionListener which posts

// its action out when the button is pressed.

redButton = new JButton("Red Score!");redButton.setLocation(0, 0);redButton.setSize(120, 30);redButton.addActionListener(this);buttonPanel.add(redButton);

blueButton = new JButton("Blue Score!");blueButton.setLocation(130, 0);blueButton.setSize(120, 30);blueButton.addActionListener(this);buttonPanel.add(blueButton);

resetButton = new JButton("Reset Score");resetButton.setLocation(0, 40);resetButton.setSize(250, 30);resetButton.addActionListener(this);buttonPanel.add(resetButton);

totalGUI.setOpaque(true);

return totalGUI;

} // This is the new ActionPerformed Method.

// It catches any events with an ActionListener attached.

// Using an if statement, we can determine which button was pressed

// and change the appropriate values in our GUI.

public void actionPerformed(ActionEvent e) { if(e.getSource() == redButton)

{redScoreAmount = redScoreAmount + 1;redScore.setText(""+redScoreAmount);

} else if(e.getSource() == blueButton)

{blueScoreAmount = blueScoreAmount + 1;blueScore.setText(""+blueScoreAmount);

} else if(e.getSource() == resetButton)

{redScoreAmount = 0;blueScoreAmount = 0;redScore.setText(""+redScoreAmount);blueScore.setText(""+blueScoreAmount);

}}




ButtonDemo_Extended demo = new ButtonDemo_Extended();frame.setContentPane(demo.createContentPane());

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setSize(280, 190);frame.setVisible(true);

} public static void main(String[] args) { //Schedule a job for the event-dispatching thread:






});}

}

Jav a : C r ea t ing B as i c G U I

This is a short example of how to create a basic Swing gui application in Java. (The tip

consists mainly of the code shown below.) This example demonstrates a border layout anduses buttons inside of panels to fill in the layout. To build an application from this, simplyreplace the buttons with GUI components of your choosing.

You will notice a method is used to create and launch a frame. We do not extend JFrame.In theory, by not doing this, it allows us to inherit from another object thus giving us moreflexibility. Well, in theory anyway.

I initialize components as attributes of the class. Since Swing components used to build theUI do not change, this seems like a good place to define them. The constructor is then use

to assemble the components you have defined.

Sample Output

BasicGui.java

1:import javax.swing.*;2:import javax.swing.event.*;3:import java.awt.*;4:import java.awt.event.*;5:/**6: This class demonstrates the basics of setting up a Java Swing GUI uisng the

7: BorderLayout. You should be able to use this program to drop in other

8: components when building a GUI

9:*/ 10: public class BasicGui{11: // Initialize all swing objects.

12: private JFrame f = new JFrame("Basic GUI"); //create Frame

13: private JPanel pnlNorth = new JPanel(); // North quadrant

14: private JPanel pnlSouth = new JPanel(); // South quadrant

15: private JPanel pnlEast = new JPanel(); // East quadrant

16: private JPanel pnlWest = new JPanel(); // West quadrant

17: private JPanel pnlCenter = new JPanel(); // Center quadrant

18:19: // Buttons some there is something to put in the panels

20: private JButton btnNorth = new JButton("North");21: private JButton btnSouth = new JButton("South");



22: private JButton btnEast = new JButton("East");23: private JButton btnWest = new JButton("West");24: private JButton btnCenter = new JButton("Center");25:26: // Menu

27: private JMenuBar mb = new JMenuBar(); // Menubar

28: private JMenu mnuFile = new JMenu("File"); // File Entry on Menu bar

29: private JMenuItem mnuItemQuit = new JMenuItem("Quit"); // Quit sub item

30: private JMenu mnuHelp = new JMenu("Help"); // Help Menu entry

31: private JMenuItem mnuItemAbout = new JMenuItem("About"); // About Entry

32:

33: /** Constructor for the GUI */ 34: public BasicGui(){35: // Set menubar

36: f.setJMenuBar(mb);37:38: //Build Menus

39: mnuFile.add(mnuItemQuit); // Create Quit line

40: mnuHelp.add(mnuItemAbout); // Create About line

41: mb.add(mnuFile); // Add Menu items to form

42: mb.add(mnuHelp);43:44: // Add Buttons

45: pnlNorth.add(btnNorth);46: pnlSouth.add(btnSouth);

47: pnlEast.add(btnEast);48: pnlWest.add(btnWest);49: pnlCenter.add(btnCenter);50: 51: // Setup Main Frame

52: f.getContentPane().setLayout(new BorderLayout());53: f.getContentPane().add(pnlNorth, BorderLayout.NORTH);54: f.getContentPane().add(pnlSouth, BorderLayout.SOUTH);55: f.getContentPane().add(pnlEast, BorderLayout.EAST);56: f.getContentPane().add(pnlWest, BorderLayout.WEST);57: f.getContentPane().add(pnlCenter, BorderLayout.CENTER);58:59: // Allows the Swing App to be closed

60: f.addWindowListener(new ListenCloseWdw());61:62: //Add Menu listener

63: mnuItemQuit.addActionListener(new ListenMenuQuit());64: }

65: 66: public class ListenMenuQuit implements ActionListener{67: public void actionPerformed(ActionEvent e){68: System.exit(0);69: }

70: }

71:72: public class ListenCloseWdw extends WindowAdapter{73: public void windowClosing(WindowEvent e){

74: System.exit(0);75: }

76: }

77: public void launchFrame(){79: // Display Frame

80: f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);81: f.pack(); //Adjusts panel to components for display

82: f.setVisible(true);83: }

84:85: public static void main(String args[]){86: BasicGui gui = new BasicGui();87: gui.launchFrame();



88: }

89:}

Tutorial for JFrameBuilder 3.3.1

Table of contents:

1.How to make a simple JFrame/JDialog.

2. Familiarize the auto-generated Java code.

3. Other exam ples.

Make a simple JFrame/JDialog

Step1 : New Java Class

Pull down the File menu and click New to display the New Java Class dialog box. Fill up the option items (Class name and Base class).

(Don't select using BorderLayout manager for ContentPane at this time) Click OK.

The simulated JFrame will appear.

http://www.mars3000.com/tutorial.html#simpleSteps%23simpleSteps


http://www.mars3000.com/tutorial.html#familiarizeCode%23familiarizeCode


http://www.mars3000.com/tutorial.html#otherExamples%23otherExamples







Step2 : Add Components into simulated JFrame

Choose any component you want to add from Component Toolbar by clicking it. Click anywhere in the contentPane or click the contentPane node in the Structure Panel to add it.



Step3 : Tidy the Added Components

To move or resize the added components by dragging. To delete component by pressing the "Delete Button" on the keyboard, when the component is being selected. To change the text on the component just by typing, when the component is being selected. To change other properties for the various components via Properties Panel, when the component is being selected. To add any event handling methods for the various components via Events Panel, when the component is being selected.

Step4 : Show Java Code for making JFrame/JDialog

Click "MyForm.java" tab to see the Java code and code structure.



Step5 : Add a few statements into appropriate place to meet your particular needs

Pull down the File menu and click Save to save the code. Open Notepad or whatever text edit tool, then just add a few statements into appropriate place to meet your particular needs. (Refer

to Familiarize the auto-generated Java code)

Step6 : Get it

Run javac.exe to compile the improved code, you will get it.

Familiarize the auto-generated Java code

Let's have a look at the auto-generated Java code below.

/****************************************************************/

/* MyForm */

/* */ /**************************************************************/ import java.awt.*; import java.awt.event.*; import java.util.*; import javax.swing.*; import javax.swing.border.*; import javax.swing.event.*; /*** Summary description for MyForm

**/ public class MyForm extends JFrame{ // Variables declaration private JLabel jLabel1; private JCheckBox btn_help; private JList jList1; private JScrollPane jScrollPane1; private JButton btn_ok; private JButton btn_cancel; private JPanel contentPane; //----- private JCheckBox jCheckBox1; private JCheckBox jCheckBox2; private JPanel jPanel1; //-----

private JRadioButton jRadioButton1; private JRadioButton jRadioButton2; private JPanel jPanel2; //----- private ButtonGroup btnGroup1; // End of variables declaration

public MyForm(){

super();initializeComponent();

// // TODO: Add any constructor code after initializeComponent call

Variables DeclarationConstructorVariables AssignmentSettingthe properties for each component.Event Handling Methodshave been done here.Just need add a few statements into right methods.User may add any particular methods to meet their needs inthis area.Main Method provided is just for testing this class.





//

this.setVisible(true);}

/*** This method is called from within the constructor to initialize the form.* WARNING: Do NOT modify this code. The content of this method is always regenerated* by the Windows Form Designer. Otherwise, retrieving design might not work properly.* Tip: If you must revise this method, please backup this GUI file for JFrameBuilder* to retrieve your design properly in future, before revising this method.*/

private void initializeComponent(){

ArrayList arr;

jLabel1 = new JLabel();btn_help = new JCheckBox();jList1 = new JList();jScrollPane1 = new JScrollPane();btn_ok = new JButton();btn_cancel = new JButton();contentPane = (JPanel)this.getContentPane();

//-----

jCheckBox1 = new JCheckBox();jCheckBox2 = new JCheckBox();jPanel1 = new JPanel();

//-----jRadioButton1 = new JRadioButton();jRadioButton2 = new JRadioButton();jPanel2 = new JPanel();

//-----btnGroup1 = new ButtonGroup();

// // jLabel1 //

jLabel1.setText("Words List:"); // // btn_help //

btn_help.setHorizontalAlignment(SwingConstants.CENTER);btn_help.setIcon(new ImageIcon("C:\\Examples\\Query.png"));btn_help.setOpaque(false);btn_help.setToolTipText("Help");btn_help.setSelected(true);btn_help.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e){

btn_help_actionPerformed(e);}

}); // // jList1 //

arr = new ArrayList();arr.add("Tech");arr.add("Soft");arr.add("Telecom");arr.add("Solutions");arr.add("Works");arr.add("Dyne");arr.add("Services");arr.add("Vers");arr.add("Devices");arr.add("Dynamics");arr.add("Net");arr.add("System");jList1.setListData(arr.toArray());jList1.setSelectionBackground( new Color(162, 196, 136));jList1.addListSelectionListener( new ListSelectionListener() {



public void valueChanged(ListSelectionEvent e){

jList1_valueChanged(e);}

}); // // jScrollPane1 //

jScrollPane1.setViewportView(jList1); // // btn_ok //

btn_ok.setOpaque(false);btn_ok.setText("Ok");btn_ok.addActionListener(new ActionListener() {


btn_ok_actionPerformed(e);}

}); // // btn_cancel //

btn_cancel.setOpaque(false);btn_cancel.setText("Cancel");btn_cancel.addActionListener(new ActionListener() {


btn_cancel_actionPerformed(e);}

}); // // contentPane //

contentPane.setLayout(null);contentPane.setBackground(new Color(187, 198, 161));addComponent(contentPane, jLabel1, 20,11,84,18);addComponent(contentPane, btn_help, 163,218,38,38);addComponent(contentPane, jScrollPane1, 19,31,155,175);addComponent(contentPane, btn_ok, 20,223,83,28);addComponent(contentPane, btn_cancel, 256,223,83,28);addComponent(contentPane, jPanel1, 187,22,155,88);addComponent(contentPane, jPanel2, 187,120,155,88);

// // jCheckBox1 //

jCheckBox1.setOpaque(false);jCheckBox1.setText("One");

// // jCheckBox2 //

jCheckBox2.setOpaque(false);jCheckBox2.setText("Two");

// // jPanel1 //

jPanel1.setLayout(new BoxLayout(jPanel1, BoxLayout.Y_AXIS));jPanel1.add(jCheckBox1, 0);jPanel1.add(jCheckBox2, 1);jPanel1.setBorder(new TitledBorder("CheckBoxes"));jPanel1.setBackground(new Color(187, 198, 161));

// // jRadioButton1 //

jRadioButton1.setOpaque(false);jRadioButton1.setText("Radio One");jRadioButton1.setSelected(true);

// // jRadioButton2 //



jRadioButton2.setOpaque(false);jRadioButton2.setText("Radio Two");

// // jPanel2 //

jPanel2.setLayout(new BoxLayout(jPanel2, BoxLayout.Y_AXIS));jPanel2.add(jRadioButton1, 0);jPanel2.add(jRadioButton2, 1);jPanel2.setBorder(new TitledBorder("Radio Buttons"));jPanel2.setBackground(new Color(187, 198, 161));

// // btnGroup1 //

btnGroup1.add(jRadioButton1);

btnGroup1.add(jRadioButton2); // // MyForm //

this.setTitle("MyForm"); this.setLocation(new Point(1, 1)); this.setSize(new Dimension(364, 295)); this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); this.setResizable(false);

}

/** Add Component Without a Layout Manager (Absolute Positioning) */ private void addComponent(Container container,Component c,int x,int y,int width,int height)

{c.setBounds(x,y,width,height);container.add(c);

}

// // TODO: Add any appropriate code in the following Event Handling Methods // private void btn_help_actionPerformed(ActionEvent e)

{System.out.println("\nbtn_help_actionPerformed(ActionEvent e) called.");

// TODO: Add any handling code here

}

private void jList1_valueChanged(ListSelectionEvent e){

System.out.println("\njList1_valueChanged(ListSelectionEvent e) called."); if(!e.getValueIsAdjusting())

{Object o = jList1.getSelectedValue();System.out.println(">>" + ((o==null)? "null" : o.toString()) + " is selected.");

// TODO: Add any handling code here for the particular object being selected

}}

private void btn_ok_actionPerformed(ActionEvent e){

System.out.println("\nbtn_ok_actionPerformed(ActionEvent e) called."); // TODO: Add any handling code here

}

private void btn_cancel_actionPerformed(ActionEvent e){

System.out.println("\nbtn_cancel_actionPerformed(ActionEvent e) called."); // TODO: Add any handling code here

}

// // TODO: Add any method code to meet your needs in the following area //

//============================= Testing ================================// //= =// //= The following main method is just for testing this class you built.=// //= After testing,you may simply delete it. =// //======================================================================// public static void main(String[] args)



{JFrame.setDefaultLookAndFeelDecorated( true);JDialog.setDefaultLookAndFeelDecorated( true);

try{

UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel" );}

catch (Exception ex){

System.out.println("Failed loading L&F: ");System.out.println(ex);

} new MyForm();

}

//= End of Testing =

}

Other examples

The examples below use nested simple layout managers instead of GridBagLayout.

Example1 :

•

See the auto-generated Java code for this example.

• Get the Java file and required image files for this example- to compile and run it, or - to retrieve this GUI design to JFrameBuilder.

http://www.mars3000.com/examples/ComplexExamples/Internet_Options/Internet_Options.java


http://www.mars3000.com/examples/ComplexExamples/Internet_Options


http://www.mars3000.com/examples/ComplexExamples/Internet_Options





Example2 :

• See the auto-generated Java code for this example.

• Get the Java file and required image files for this example- to compile and run it, or - to retrieve this GUI design to JFrameBuilder.

http://www.mars3000.com/examples/ComplexExamples/Add_Remove_Programs/Add_Remove_Pro.java


http://www.mars3000.com/examples/ComplexExamples/Add_Remove_Programs


http://www.mars3000.com/examples/ComplexExamples/Add_Remove_Programs



Example3 :

• See the auto-generated Java code for this example.

• Get the Java file for this example- to compile and run it, or - to retrieve this GUI design to JFrameBuilder.

http://www.mars3000.com/examples/ComplexExamples/FTP/FTP.java


http://www.mars3000.com/examples/ComplexExamples/FTP


http://www.mars3000.com/examples/ComplexExamples/FTP

Documents

MELJUN CORTES's - JAVA GUI Source Code & Handouts