| janicethorne via JavaKB.com 2006-03-30, 10:02 pm |
| I have a program that takes in data from the user, calculates the data and is
supposed to display the results in a window. The program compiles and the
user is able to type in data, but when you click the calculate button, the
errors that come up are the following:
java.lang.NumberFormatException: For input string: "Enter Length"
at java.lang.NumberFormatException.forInputString
(NumberFormatException.
java:48)
at java.lang.Integer.parseInt(Integer.java:468)
at java.lang.Integer.parseInt(Integer.java:518)
at Program81$ButtonHandler.actionPerformed(Program81.java:38)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:
17
86)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed
(Abstra
ctButton.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
(BasicButtonL
istener.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:480)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy
(EventDispatchTh
read.java:201)
at java.awt.EventDispatchThread.pumpEventsForHierarchy
(EventDispatchThre
ad.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)
The code that the error is referencing is:
private class ButtonHandler implements ActionListener {
public void actionPerformed(ActionEvent event) {
rectangle r = new rectangle();
r.setWidth(Integer.parseInt(dataWidth.getText()));
r.setLength(Integer.parseInt(enterLength.getText()));
calculateArea.setText("The area of your rectangle is " + r.calcArea());
calculatePerim.setText("The perimeter of your rectangle is " + r.
calcPerimeter());
}
}//end of action handler
What is the cause of this and how do I remedy it? I have no experience with
IO. thank you so much for your help.
--
"The man who does not read good books has no advantage over the man who
cannot read them."
Message posted via JavaKB.com
http://www.javakb.com/Uwe/Forums.as...-setup/200603/1
|