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Description
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FULL PRODUCT VERSION :
A DESCRIPTION OF THE PROBLEM :
at last of method initBean(Class type, Object oldInstance, Object newInstance, Encoder out):
line 316:
String removeListenerMethodName = d.getRemoveListenerMethod().getName();
for (int i = oldL.length; i < newL.length; i++) {
invokeStatement(oldInstance, removeListenerMethodName, new Object[]{oldL[i]}, out);
// the upper line should be
invokeStatement(oldInstance, removeListenerMethodName, new Object[]{newL[i]}, out);
}
It is obvious that if the for loop is executed, you are trying to access "oldL" with an illegal index because i >= oldL.length.
I think this may be a clerical error and "newL" should be used inside the for loop.
The exception will be thrown when we remove some default listeners from an instance. In one word, if oldL.length < newL.length,
an ArrayIndexOutOfBoundsException will be thrown.
REPRODUCIBILITY :
This bug can be reproduced occasionally.
------------- begin ----------------
/*
* Test.java
*
* Created on June 15, 2007, 2:41 PM
*
*/
import java.awt.BorderLayout;
import java.beans.ExceptionListener;
import java.beans.XMLEncoder;
import java.io.ByteArrayOutputStream;
import java.io.UnsupportedEncodingException;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.plaf.basic.BasicLabelUI;
public class Test {
/** Creates a new instance of Test */
public Test() {
JPanel panel = new JPanel(new BorderLayout());
JLabel label = new JLabel("");
//the following line is ugly and useless
//but I have to do something to detonate the bomb
label.removePropertyChangeListener((BasicLabelUI)label.getUI());
panel.add(label);
ByteArrayOutputStream out = new ByteArrayOutputStream();
XMLEncoder encoder = new XMLEncoder(out);
encoder.setExceptionListener(new ExceptionListener() {
public void exceptionThrown(Exception e) {
e.printStackTrace();
System.err.println("Continuing ...");
}
});
encoder.writeObject(panel);
encoder.flush();
encoder.close();
String xml;
try {
xml = new String(out.toByteArray(), "UTF-8");
System.out.println(xml);
} catch (UnsupportedEncodingException ex) {
ex.printStackTrace();
}
}
public static void main(String[] args) {
Test app = new Test();
}
}
------------- end ----------------
Posted Date : 2007-06-15 21:46:17.0
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