jbutton

Java JButton button monitoring, when more than one button to do things can be used for the loop (such as calculator 1-9) Save effort.The variables can only be final or static when listening, but these are obviously not possible in the For loop, so we add a final variable in the loop.Hey, easy to fix.Package Com.xinbo;Import Java.awt.FlowLayout;Import Java.awt.GridLayout;Import java.awt.event.ActionEvent;Import Java.awt.event.ActionListener;Import Java

Note: According to the suggestions of yigemaser, jfml, and crazyjavar, I would like to express my gratitude for the help of the three parties! When writing a UI application, it is usually in some event processing processes, especially when the processing is time-consuming, and it is hoped that some progress information will be displayed to the user in a timely manner. Generally, a text control is used to display the progress information. For example, in the following program, there is a jtextpan

In some layout S such as flowlayout and borderlayout, jbutton uses setsize () to set the size. You can use the setpreferredsize method to set the size. For example: Public static void main (string [] ARGs ){Jframe frame = new jframe ();Frame. setdefaclocloseoperation (jframe. exit_on_close );Frame. setlayout (New flowlayout ());Jbutton button = new jbutton ("tes

Java image interface development example Simple Application of jbutton and events, a small example of a calculator, the Code is as follows:Import java. AWT. borderlayout; Import java. AWT. gridlayout; Import java. AWT. event. actionevent; Import java. AWT. event. actionlistener; Import javax. Swing. jbutton;Import javax. Swing. jframe;Import javax. Swing. jpanel; /*** Calculator instance* @ Author Zuo Jie

1, the JButton size of the settingbutton.setpreferredsize (New Dimension (30,30)); //(30,30) is the size of the button you want to set 2. Transparent setting for JButtonbutton.setcontentareafilled (false);3. Set the border of the button to remove the JButtonbutton.setborderpainted (false);4, the setting of JButton add iconinstantiate an Icon object imageicon image = new ImageIcon (Icons[i]), instantiates a

/***//** * @ (#) C10_1.java * * * @ Author * @ Version 1.00 */ Import java. AWT .*; Import javax. Swing .*; Import java. AWT. event .*; Public class c10_1 extends japplet implements actionlistener ...{ Container CP = getcontentpane (); Icon Pa = new imageicon ("G:/javadocs/a1.gif "); Icon Pb = new imageicon ("G:/javadocs/a2.gif "); Icon Pc = new imageicon ("G:/javadocs/a3.gif "); Jbutton bt = new jbutton

11, setting the size of the JButton2 --Because Jbuten is a small device type, the general setsize can not be awakened to the size of the setting, so generally we use3Button.setpreferredsize (NewDimension (30,30));4 //(30,30) is the size of the button you want to set52, transparent settings for JButton6 --the button is set to transparent so that it does not block back background7Button.setcontentareafilled (false);83, set the border of the button to remove the JButton9 --If sometimes your bu

Importjava.applet.*;Importjava.awt.*;Importjava.awt.event.*;Importjavax.swing.*; Public classHelloextendsapplet{JButton bt=NewJButton ("OK"); Label lb=NewLabel ("Hello"); Public voidinit () { This. Add (lb); This. Add (BT); } Public voidstart () {Bt.addactionlistener (NewActionListener () { Public voidactionperformed (ActionEvent arg0) {if(Lb.gettext (). toString (). Equals ("Hello") {Lb.settext (Hello); Bt.settext (Determine); }

Phenomenon: An extension of the JButton class button that has a different look when the mouse is moved, moved, or clicked Solution: import javax.swing.*; import javax.swing.border.*; import java.awt.event.*; import java.awt.*; /** * Title: * Description: * Copyright: * Company: * @author * @version 1.0/An extension of the /** * JButton button that has a different appearance when the mouse is moved, r

Reproduced from: http://blog.sina.com.cn/s/blog_6eef4a86010140or.html JLabel, JButton, etc. cannot be wrapped in "\ n", but they support HTML, so they can be implemented with Attach a small procedure: 01PackageCom.kaso.Test;0203ImportJavax.swing.JFrame;04ImportJavax.swing.JLabel;0506Public classTestframeextendsJFrame {07PrivateJLabel label =NewJLabel ("");0809 PublicTestframe () {10 This. Add (label);One String s = Fun ();Label.settext ("1

dth=300; static final int height=200; public static void Main (string[] args) {JFrame jf=new JFrame ("test program"); Jf.setsize (Width,height); Jf.setdefaultcloseoperation (Jframe.exit_on_close); Jf.setvisible (TRUE); JPanel contentpane=new JPanel (); Jf.setcontentpane (ContentPane); JButton b1=new JButton ("Life");

Five common la s of Swing and wing in java 1. Border layout (BorderLayout) 2. FlowLayout) 3. GridLayout) 4. BoxLaYout) 5. Empty layout (null) There are two other layout S: GridBagLayout (grid package layout) and CardLayout (card layout) Note: The default layout of JFrame and JDialog is BorderLayout, while that of JPanel and Applet is FlowLayout. Sample Code for border layout: Import java. awt. borderLayout; import javax. swing. JButton; import javax.

The code is as followsImport Java.awt.color;import java.awt.container;import java.awt.gridlayout;import java.awt.event.ActionEvent; Import Java.awt.event.actionlistener;import Javax.swing.jbutton;import Javax.swing.jframe;import Javax.swing.jlabel;import javax.swing.jpanel;import Javax.swing.jtextfield;class MyWindows extends JFrame implements actionlistener{private static final long serialversionuid = 1L; Boolean tag=true; Boolean signal=true; JTextField Text1; Publi

Java --- Swing Interface Development Summary, java --- swing Interface I. graphical interface of java 1. awt java. awt The graphic interface launched before jdk1.4 is written in c/c ++, which is not cross-platform. 2. swing javax. swing Jdk1.4 graphic interface, good cross-platform Ii. common components 1. Container Components The top-level container of the JFrame form class (the default layout is the border layout and cannot be added to each other by yourself) The most flexible container of the

Boundary layoutpublic class Borderlayouttest extends jframe{Public Borderlayouttest () {This.setsize (900,600);This.setdefaultcloseoperation (Jframe.exit_on_close);This.settitle ("Border layout");This.setlocationrelativeto (null);//Set the form to centerThis.addcontent ();This.setvisible (TRUE);}public void Addcontent () {Container con = This.getcontentpane ();Con.setlayout (New BorderLayout ());JButton btn1 = new

Jseparator (); Mnnewmenu_2.add (separator); JMenuItem mntmnewmenuitem_7 = new JMenuItem ("\u5173\u4e8e\u8ba1\u7b97\u5668 (A)"); Mntmnewmenuitem_7.setaccelerator ( Keystroke.getkeystroke (keyevent.vk_a, 0)); Mnnewmenu_2.add (mntmnewmenuitem_7); contentpane = new JPanel (); Contentpane.setborder (New Emptyborder (5, 5, 5, 5)); Setcontentpane(ContentPane); contentpane.setlayout (null); Txtjisuanjieguo = new JTextField (); Txtjisuanjieguo.sethorizontalalignment (swingconstants.right); Txtjisuanjieg

The code is as followsImport Java.awt.*;import java.awt.event.*;import Javax.swing.*;import Java.util.vector;public class Calculator {Strin G str1 = "0"; Operand 1 Initial value must be 0 for program security String str2 = "0"; Operand 2 String signal = "+"; Operator String result = "";//result//status switch int k1 = 1;//switch 1 used to select input direction to be written to str2 or str2 int k2 = 1;//Switch 2 sign key number k2 Gt;1 instructions are 2+3-9+8 such a multi-sign operation int K3