| Key: |
HARMONY-6038
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| Type: |
Bug
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| Status: |
Resolved
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| Resolution: |
Fixed
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| Priority: |
Major
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| Assignee: |
Unassigned
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| Reporter: |
Kevin Zhou
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| Votes: |
0
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| Watchers: |
0
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Time Tracking:
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Original Estimate:
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24h
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Remaining Estimate:
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24h
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Time Spent:
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Not Specified
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| Estimated Complexity: |
Moderate
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| Resolution Date: |
12/Dec/08 01:51 AM
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Conduct the given a test case [1] below on RI and HARMONY.
RI works well, while HARMONY will throw a NullPointerException [2].
The exception is throw in StandardBeanInfo during the merging of properties from MockParent ang MockChild classes.
[1] Test Case
public class IntrospectorTest extends TestCase {
public static class MockParent {
public void setValue(int v) {
// do nothing
}
public void setValue(int v, String s) {
// do nothing
}
}
public static class MockChild extends MockParent {
public void setValue(int v) {
// do nothing
}
}
public void test_Introspector() throws Exception {
BeanInfo beanInfo = Introspector.getBeanInfo(MockChild.class);
}
}
[2] NPE Stack Trace:
java.lang.NullPointerException
at java.beans.StandardBeanInfo.mergeProps(StandardBeanInfo.java:295)
at java.beans.StandardBeanInfo.mergeBeanInfo(StandardBeanInfo.java:209)
at java.beans.Introspector.getBeanInfoImpl(Introspector.java:282)
at java.beans.Introspector.getBeanInfoImplAndInit(Introspector.java:347)
at java.beans.Introspector.getBeanInfo(Introspector.java:162)
at IntrospectorTest.test_MockObject(IntrospectorTest.java:27)
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Description
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Conduct the given a test case [1] below on RI and HARMONY.
RI works well, while HARMONY will throw a NullPointerException [2].
The exception is throw in StandardBeanInfo during the merging of properties from MockParent ang MockChild classes.
[1] Test Case
public class IntrospectorTest extends TestCase {
public static class MockParent {
public void setValue(int v) {
// do nothing
}
public void setValue(int v, String s) {
// do nothing
}
}
public static class MockChild extends MockParent {
public void setValue(int v) {
// do nothing
}
}
public void test_Introspector() throws Exception {
BeanInfo beanInfo = Introspector.getBeanInfo(MockChild.class);
}
}
[2] NPE Stack Trace:
java.lang.NullPointerException
at java.beans.StandardBeanInfo.mergeProps(StandardBeanInfo.java:295)
at java.beans.StandardBeanInfo.mergeBeanInfo(StandardBeanInfo.java:209)
at java.beans.Introspector.getBeanInfoImpl(Introspector.java:282)
at java.beans.Introspector.getBeanInfoImplAndInit(Introspector.java:347)
at java.beans.Introspector.getBeanInfo(Introspector.java:162)
at IntrospectorTest.test_MockObject(IntrospectorTest.java:27) |
Show » |
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[classlib] [beans] java.beans.Introspector.getBeanInfo doesn't works well and throws NPE
