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Applet Code Error  RSS feed

 
Linda Weeks
Greenhorn
Posts: 3
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When I try to run DonnaApplet, the appletviewer screen comes up and I'm able to feed in the name and numbers but when I click Submit Scores I get this error message:
A:\>appletviewer DonnaApplet.html
Exception occurred during event dispatching:
java.lang.NumberFormatException:
at java.lang.Integer.parseInt(Compiled Code)
at java.lang.Integer.parseInt(Integer.java:458)
at DonnaApplet.actionPerformed(DonnaApplet.java:126)
at java.awt.AWTEventMulticaster.actionPerformed(AWTEventMulticaster.java
:351)
at java.awt.Button.processActionEvent(Button.java:308)
at java.awt.Button.processEvent(Button.java:281)
at java.awt.Component.dispatchEventImpl(Compiled Code)
at java.awt.Component.dispatchEvent(Compiled Code)
at java.awt.EventQueue.dispatchEvent(Compiled Code)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:68)
Here's my code:

Thanks
Linda

[This message has been edited by Cindy Glass (edited December 03, 2001).]
 
Paul Stevens
Ranch Hand
Posts: 2823
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In your init() method you do this line twice:
submitButton.addActionListener(this);
The second one should be
displayButton.addActionListener(this);
You still need to put error checking in for the rank textfield in case a non number is entered in or nothing at all.
What is currently happening is the action listers actionPerformed() is being fired twice for every click. The second time in the textfield contains nothing so you get the exception. Which is why you need to put in error checking.
 
It is sorta covered in the JavaRanch Style Guide.
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