JInternalFrame

[kalai sundar]

in my program from one internal frame i am calling another internal frame, when i do that i ma geting the follwing exception

java.lang.StringIndexOutOfBoundsException: String index out of range: -2
at java.lang.String.substring(String.java:1438)
at JarLocation.btnCreateActionPerformed(JarLocation.java:297)
at JarLocation.access$700(JarLocation.java:28)
at JarLocation$8.actionPerformed(JarLocation.java:250)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1786)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1839)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:245)
at java.awt.Component.processMouseEvent(Component.java:5100)
at java.awt.Component.processEvent(Component.java:4897)
at java.awt.Container.processEvent(Container.java:1569)
at java.awt.Component.dispatchEventImpl(Component.java:3615)
at java.awt.Container.dispatchEventImpl(Container.java:1627)
at java.awt.Component.dispatchEvent(Component.java:3477)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)
at java.awt.Container.dispatchEventImpl(Container.java:1613)
at java.awt.Window.dispatchEventImpl(Window.java:1606)
at java.awt.Component.dispatchEvent(Component.java:3477)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)

plz tell me possibel solution ASAP

kalai

[Stuart Gray]

What do you mean by 'calling'? You are trying to construct another internal frame (i.e using 'new')? Or you are trying to call a method on another internal frame?

[Tad Dicks]

Your poblem is that fact your trying to create a subString from one string and passing it invalid indexes. How this relates to swing/or a JInternalFrame, I can't tell you, no one here is going to be able to tell you. You either need to post some of your code (the stuff throwing the exception) or explain your question better.

Look at your code in JarLocation.java (I'm assuming thats your code) for where you're using .substring(x, y) and try to figure out why its not working (are you passing in the correct string? is empty? is it as long as you think it is? ). I don't mean to sound harsh, but learn how to read the stack trace printout to find where your exception is and then post that block of code with your question if you still can't figure it out. If you don't understand what the exception means well ask that question.