Using Java to quickly implement a progress bar __java

Based on someone asking how to make a progress bar, here's a simple procedure:

Mainly using JProgressBar (Swing built-in Javax.swing.JProgressBar) and SwingWorker (Swing built-in Javax.swing.SwingWorker)

Some people will say, not by thread. It's OK to share a variable with a thread. But this is not a very elegant way, of course, you can use the thread to encapsulate the line. However, SwingWorker has helped us to encapsulate the ~ ~ ~ Use ready-made things to do or convenient ^_^

First look at the effect:

Look at the code below: very simple, I believe you are greatly sure to understand the ~

Package Org.ubird; Import Java.awt.BorderLayout; Import java.awt.Dimension; Import Java.awt.Image; Import java.awt.event.ActionEvent; Import Java.awt.event.ActionListener; Import java.util.ArrayList; Import java.util.List; Import java.util.concurrent.ExecutionException; Import Javax.imageio.ImageIO; Import Javax.swing.ImageIcon; Import Javax.swing.JButton; Import Javax.swing.JLabel; Import Javax.swing.JPanel; Import Javax.swing.JProgressBar; Import Javax.swing.JScrollPane; Import javax.swing.SwingUtilities; Import Javax.swing.SwingWorker; public class Testswingworker extends swingworker<list<image>,string>{private JLabel status; Private JPanel Viewer Private string[] Imagesname; Private JProgressBar JPB; public static void Main (string[] args) {Swingutilities.invokelater (new Runnable () {public void run () {Testframe frame = New Testframe (); Final JPanel panel = new JPanel (); Final JLabel label = new JLabel (); Final string[] Imagesname = new string[38]; for (int i=0; i<iMagesname.length; i++) {Imagesname[i] = "RES/1 (" + (i+1) + "). jpg"; JScrollPane sp = new JScrollPane (panel); Sp.setsize (New Dimension (700,500)); Frame.add (Sp,borderlayout.center); JPanel stp = new JPanel (); Final JProgressBar JPB = new JProgressBar (); Jpb.setminimum (1); Jpb.setmaximum (imagesname.length); Stp.add (JPB); Stp.add (label); Frame.add (Stp,borderlayout.south); JButton button = new JButton ("Load image"); Button.addactionlistener (new ActionListener () {public void actionperformed (ActionEvent e) {testswingworker SW = new Test SwingWorker (label, panel, Imagesname, JPB); Sw.execute (); } }); Frame.add (Button,borderlayout.north); Frame.setvisible (TRUE); } }); Public Testswingworker (JLabel status, JPanel Viewer, string[] imagesname, JProgressBar jpb) {this.status = status; Viewer = Viewer; This.imagesname = Imagesname; THIS.JPB = JPB; } @Override protected list<image> Doinbackground () throws Exception {list<image> Image = new Arraylist<ima Ge> (); for (int i=0; I&LT;imagesname.length; i++) {Image.add (Imageio.read (GetClass (). getClassLoader (). GetResource (Imagesname[i))); Publish ("Already loaded" + (i+1) + "/" +imagesname.length+ ":" +imagesname[i]);} return image; @Override protected void process (list<string> chunks) {Status.settext (Chunks.get ()-1)); int x = Chunks.size Ger.parseint (Chunks.get (Chunks.size ()-1). substring (Chunks.get (chunks.size ()-1). IndexOf ("()) +1,chunks.get ( Chunks.size ()-1). IndexOf (")"). Trim ()); Jpb.setvalue (x); for (String str:chunks) {System.out.println (str);}} @Override protected void Do () {try {for (Image Image:get ()) {JLabel label = new JLabel (new ImageIcon (image); label.s Etsize (160, 120); Label.setpreferredsize (New Dimension (160,120)); Viewer.add (label); The catch (Interruptedexception e) {e.printstacktrace ();} catch (Executionexception e) {e.printstacktrace ();}} }

Package Org.ubird; Import Javax.swing.JFrame; public class Testframe extends JFrame {public testframe () {settitle ("Test Frame"); SetSize (800,600); setdefaultcloseoper ation (Jframe.exit_on_close); } }

The program can run the source code, resource picture Download address: http://download.csdn.net/source/3245370

Note: after decompression, double-click Inside: Compileandrun.bat can run directly under win