Getting Started coding Java Swing programming (Getting Started with Java programming) _java

Basic process of swing programming

First step: Get the main form

Copy Code code as follows:

JFrame the JF = new JFrame ("Demo1");

Step two: Get the container for the main form

Copy Code code as follows:

Container C = Jf.getcontentpane ();

Step three: Set the container layout

Copy Code code as follows:

C.setlayout (New FlowLayout (flowlayout.left,20,20));

Step Fourth: Add components and set component properties

Copy Code code as follows:

JLabel Label1 = new JLabel ("Hello world!");
JLabel Label2 = new JLabel ("Bye world!");
Label1.setbackground (Color.Blue);
Label1.setopaque (TRUE);

Step Fifth: Set the form properties, close the main form, exit the program

Copy Code code as follows:

Jf.setsize (200, 100); To set the main form size
Jf.setvisible (TRUE);

Jf.setresizable (FALSE);

Jf.setdefaultcloseoperation (Jframe.exit_on_close),//Set to exit the program when the form is closed

Other:
Jf.setdefaultcloseoperation (jframe.exit_on_close), or you can use the following code instead

Jf.addwindowlistener (New Windowadapter () {

@Override
public void windowclosing (WindowEvent e) {
Super.windowclosing (e);
System.exit (0);
}
});

3. A little personal learning experience:

* Learning swing, make a simple small software, not difficult, want to do good-looking, you need to have a deeper study of the layout!

* One use of swing: Although swing is a bit outdated, it can be done with gadgets, ancillary work, etc. Individuals are interested in the computer graphics interface.

The *swing component uses some design patterns, it is worth studying, it is very useful for programming!

* Learning things in your insistence, many kits are similar to a kind of profound, others can also analogy!

4. Attach a swing program learned in the Youtobe video:

Copy Code code as follows:

Package com.ting723.www;

Import Java.awt.Container;

Import Java.awt.GridLayout;

Import java.awt.event.ActionEvent;

Import Java.awt.event.ActionListener;

Import Javax.swing.ImageIcon;

Import Javax.swing.JButton;

Import Javax.swing.JFrame;

Import Javax.swing.JPanel;

public class Demo10xogame extends jframe{

JPanel JP = new JPanel ();

Public Demo10xogame () {

Container C = This.getcontentpane ();

C.add (JP);

Jp.setlayout (New GridLayout (3, 3));

for (int i = 0; i < 9; i++) {

Xobutton JB = new Xobutton ();

Jp.add (JB);

}

This.setsize (500, 500);

This.setdefaultcloseoperation (Jframe.exit_on_close);

This.setlocationrelativeto (NULL);

This.setvisible (TRUE);

}

public static void Main (string[] args) {

New Demo10xogame ();

}

}

Copy Code code as follows:

Class Xobutton extends JButton implements ActionListener {

Private ImageIcon X, O;

byte value = 0;

Public Xobutton () {

X = new ImageIcon (This.getclass (). GetResource ("X.png"));

O = new ImageIcon (This.getclass (). GetResource ("O.png"));

This.addactionlistener (this);

}

@Override

public void actionperformed (ActionEvent e) {

value++;

Value%= 3;

Switch (value) {

Case 0:

SetIcon (NULL);

Break

Case 1:

SetIcon (X);

Break

Case 2:

SetIcon (O);

}

}

}