java - String split not working when there is no text in one side -


trying split "username:password" textarea, textareauser , textareapass, when input "username:" or ":password" stops.

    private void jbuttonstartactionperformed(java.awt.event.actionevent evt) {                                                   string[] lines = jtextareascrap.gettext().split("\n");         string[] divid = null;     string user, pass;      jtextareauser.settext(null);     jtextareapass.settext(null);      (int i=0; i<= lines.length; i++){          if (lines[i].contains(":")) {              divid = lines[i].split(":");              user = divid[0];              pass = divid[1];              jtextareauser.append(divid[0]+"\n");             jtextareapass.append(divid[1]+"\n");          } }

stack trace :

exception in thread "awt-eventqueue-0" java.lang.arrayindexoutofboundsexception: 1         @ dorkcreator.dorkcreator.jbuttonstartactionperformed(dorkcreator.java:135)         @ dorkcreator.dorkcreator.access$000(dorkcreator.java:14)         @ dorkcreator.dorkcreator$1.actionperformed(dorkcreator.java:50)         @ javax.swing.abstractbutton.fireactionperformed(abstractbutton.java:2022)         @ javax.swing.abstractbutton$handler.actionperformed(abstractbutton.java:2346)         @ javax.swing.defaultbuttonmodel.fireactionperformed(defaultbuttonmodel.java:402)         @ javax.swing.defaultbuttonmodel.setpressed(defaultbuttonmodel.java:259)         @ javax.swing.plaf.basic.basicbuttonlistener.mousereleased(basicbuttonlistener.java:252)         @ java.awt.component.processmouseevent(component.java:6525)         @ javax.swing.jcomponent.processmouseevent(jcomponent.java:3324)         @ java.awt.component.processevent(component.java:6290)         @ java.awt.container.processevent(container.java:2234)         @ java.awt.component.dispatcheventimpl(component.java:4881)         @ java.awt.container.dispatcheventimpl(container.java:2292)         @ java.awt.component.dispatchevent(component.java:4703)         @ java.awt.lightweightdispatcher.retargetmouseevent(container.java:4898)         @ java.awt.lightweightdispatcher.processmouseevent(container.java:4533)         @ java.awt.lightweightdispatcher.dispatchevent(container.java:4462)         @ java.awt.container.dispatcheventimpl(container.java:2278)         @ java.awt.window.dispatcheventimpl(window.java:2750)         @ java.awt.component.dispatchevent(component.java:4703)         @ java.awt.eventqueue.dispatcheventimpl(eventqueue.java:751)         @ java.awt.eventqueue.access$500(eventqueue.java:97)         @ java.awt.eventqueue$3.run(eventqueue.java:702)         @ java.awt.eventqueue$3.run(eventqueue.java:696)         @ java.security.accesscontroller.doprivileged(native method)         @ java.security.protectiondomain$1.dointersectionprivilege(protectiondomain.java:75)         @ java.security.protectiondomain$1.dointersectionprivilege(protectiondomain.java:86)         @ java.awt.eventqueue$4.run(eventqueue.java:724)         @ java.awt.eventqueue$4.run(eventqueue.java:722)         @ java.security.accesscontroller.doprivileged(native method)         @ java.security.protectiondomain$1.dointersectionprivilege(protectiondomain.java:75)         @ java.awt.eventqueue.dispatchevent(eventqueue.java:721)         @ java.awt.eventdispatchthread.pumponeeventforfilters(eventdispatchthread.java:201)         @ java.awt.eventdispatchthread.pumpeventsforfilter(eventdispatchthread.java:116)         @ java.awt.eventdispatchthread.pumpeventsforhierarchy(eventdispatchthread.java:105)         @ java.awt.eventdispatchthread.pumpevents(eventdispatchthread.java:101)         @ java.awt.eventdispatchthread.pumpevents(eventdispatchthread.java:93)         @ java.awt.eventdispatchthread.run(eventdispatchthread.java:82)

it's because string split remove "empties".

change to:

divid = lines[i].split(":", -1);

java: string split(): want include empty strings @ end


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