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Posted to commits@harmony.apache.org by "Mikhail Loenko (JIRA)" <ji...@apache.org> on 2006/04/25 13:03:06 UTC
[jira] Resolved: (HARMONY-402) java.beans.Beans.InstanceOf(Object
bean,Class targetType) method works incorrectly
[ http://issues.apache.org/jira/browse/HARMONY-402?page=all ]
Mikhail Loenko resolved HARMONY-402:
------------------------------------
Resolution: Fixed
fixed in revision 396838
Svetlana, please check that it fully resolves the problem
> java.beans.Beans.InstanceOf(Object bean,Class targetType) method works incorrectly
> ----------------------------------------------------------------------------------
>
> Key: HARMONY-402
> URL: http://issues.apache.org/jira/browse/HARMONY-402
> Project: Harmony
> Type: Bug
> Components: Classlib
> Reporter: Svetlana Samoilenko
> Assignee: Mikhail Loenko
> Attachments: Beans.diffs, BeansTest.java, ObjectBean.java
>
> Accodring to java 1.4.2 and 1.5 specifications java.beans.Beans.InstanceOf(Object bean,Class targetType) method returns "true" if the given bean supports the given targetType.
> As a result isInstanceOf(Object bean, null) should return false.
> Harmony throws NPE in this case and returns false for correct non-null targetType.
>
> Code for reproduce:
> Put ObjectBean class in the same directory as the test.
> import java.beans.Beans;
> import java.io.*;
>
> public class test {
> public static void main(String[] args) {
> ObjectBean bean = new ObjectBean();
>
> try {
> Class targetType = Externalizable.class;
> //correct non-null targetType
> System.out.println("***"+Beans.isInstanceOf(bean, targetType));
> } catch (Exception e) {
> e.printStackTrace();
> }
>
> try {
> Class targetType = null;
> // null targetType
> System.out.println("***"+Beans.isInstanceOf(bean, targetType));
> } catch (Exception e) {
> e.printStackTrace();
> }
> }
> }
>
> class ObjectBean implements Externalizable {
> public void writeExternal(ObjectOutput out) {};
> public void readExternal(ObjectInput in){};
> }
> Harmony output:
> ***false
> java.lang.NullPointerException
> at java.lang.Class.isAssignableFrom(Native Method)
> at java.beans.Beans.isInstanceOf(Beans.java:147)
> at test.main(test.java:18)
> BEA optput:
> ***true
> ***false
>
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