swing - Java Value must Be Between 0 and 100 -

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i have code:

package com.cjburkey.downloads.wie_ein_chef;  import java.awt.flowlayout; import java.awt.event.actionevent; import java.awt.event.actionlistener; import java.beans.propertychangeevent; import java.beans.propertychangelistener; import java.io.bufferedoutputstream; import java.io.file; import java.net.httpurlconnection; import java.net.url; import java.util.concurrent.executionexception; import javax.swing.jbutton; import javax.swing.jframe; import javax.swing.jlabel; import javax.swing.joptionpane; import javax.swing.jprogressbar; import javax.swing.swingworker;  import net.lingala.zip4j.core.zipfile; import net.lingala.zip4j.exception.zipexception;  public class download {  final static jframe frm = new jframe(); final static jlabel status = new jlabel("downloading..."); final static jbutton cancel = new jbutton("cancel"); static file filedown = null; static string dire = null;  public download(string site, file file, string dir) {      filedown = file;     dire = dir;     final jprogressbar current = new jprogressbar(0, 100);     current.setsize(50, 100);     current.setvalue(0);     current.setstringpainted(true);     frm.setsize(640,  480);     frm.setdefaultcloseoperation(jframe.exit_on_close);     frm.setlayout(new flowlayout());     frm.add(status);     frm.add(current);     frm.add(cancel);     frm.pack();     frm.setlocationrelativeto(null);     frm.setresizable(false);     frm.setvisible(true);     final worker worker = new worker(site, file);     worker.addpropertychangelistener(new propertychangelistener() {         @override         public void propertychange(propertychangeevent pcevt) {             if ("progress".equals(pcevt.getpropertyname())) {                 current.setvalue((integer) pcevt.getnewvalue());             } else if (pcevt.getnewvalue() == swingworker.statevalue.done) {                 try {                     worker.get();                 } catch (interruptedexception | executionexception e) {                     joptionpane.showmessagedialog(frm, e.getmessage(), null, joptionpane.error_message);                     frm.getcontentpane().removeall();                     frm.dispose();                     home.frame.getcontentpane().removeall();                     home.frame.repaint();                     new home();                 }             }          }     });     cancel.addactionlistener(new actionlistener() {         public void actionperformed(actionevent e) {             int option = joptionpane.showconfirmdialog(frm, "are sure wish cancel download?");             if(option == joptionpane.yes_option) {                 download.filedown.delete();                 system.exit(0);             } else {                 joptionpane.showmessagedialog(frm, "resuming");             }         }     });     worker.execute(); } }  class worker extends swingworker<void, void> { private string site; private file file;  public worker(string site, file file) {     this.site = site;     this.file = file; }  @override protected void doinbackground() throws exception {     url url = new url(site);     httpurlconnection connection = (httpurlconnection) url.openconnection();     int filesize = connection.getcontentlength();     int totaldataread = 0;     try (java.io.bufferedinputstream in = new java.io.bufferedinputstream(connection.getinputstream())) {         java.io.fileoutputstream fos = new java.io.fileoutputstream(file);         try (java.io.bufferedoutputstream bout = new bufferedoutputstream(fos, 1024)) {             byte[] data = new byte[1024];             int i;             while ((i = in.read(data, 0, 1024)) >= 0) {                 totaldataread = totaldataread + i;                 bout.write(data, 0, i);                 int percent = (totaldataread * 100) / filesize;                 download.status.settext(totaldataread / 1024 + "kb/" + filesize / 1024 + "kb");                 setprogress(percent);                 download.frm.settitle("downloading file");                 download.frm.pack();                 download.frm.setlocationrelativeto(null);                 if(percent == 100.0) {                     jbutton finish = new jbutton("finish install(warning: override current minecraft profiles)");                     download.frm.getcontentpane().removeall();                     download.frm.repaint();                     download.frm.add(finish);                     download.frm.settitle("extracting...");                     download.frm.pack();                     download.frm.setlocationrelativeto(null);                     finish.addactionlistener(new actionlistener() {                         public void actionperformed(actionevent e) {                             download.status.settext("waiting");                             zipfile file = null;                             try {                                 file = new zipfile(download.filedown);                             } catch (zipexception e1) {                                 joptionpane.showmessagedialog(null, e1.getmessage(), null, joptionpane.error_message);                             }                             system.out.println(download.filedown.tostring());                             file.setruninthread(true);                             try {                                 file.extractall(download.dire);                                 joptionpane.showmessagedialog(null, "completed install!!");                                 download.filedown.delete();                                 system.exit(0);                             } catch (zipexception e1) {                                 joptionpane.showmessagedialog(null, e1.getmessage(), null, joptionpane.error_message);                             }                         }                     });                 }             }         }     }     return null; } }

and used work fine, now, when reaches 27%, gives error complaining how value must between 0 , 100, thing is, used work, , suddenly, doesn't. why?

the problem experiencing piece of code:

int percent = (totaldataread * 100) / filesize; download.status.settext(totaldataread / 1024 + "kb/" + filesize / 1024 + "kb"); setprogress(percent);

your value percent must outside range 0...100 exception message coming setprogress method: http://docs.oracle.com/javase/7/docs/api/javax/swing/swingworker.html#setprogress(int)

note:

illegalargumentexception - value not 0 100


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