(ann) unspecified behavior of Package.isAnnotationPresent(null)

Name: viR10068 Date: 04/29/2004


The spec for the Package.isAnnotationPresent(Class<? extends Annotation>) says:
"Description copied from interface: AnnotatedElement"

But the "Throws" statement was not copy and behavior for the null parameter
is undefined (spec for AnnotatedElement.isAnnotationPresent requires the
NullPointerException in this case). So the spec should be clarified.

The RI behavior also should be unified. Now, the RI (jdk15-b49) throws the
NullPointerException for the default package and does not throw it for any
other.

The new JCK test fails due to this bug:
api/java_lang/Package/index.html#isAnnotPresent[isAnnotPresent0002]

The sources:
---------------------B.java---------------------------
package B;
import java.io.PrintStream;

class B {

    public static void main(String argv[]) {
        try {
            B.class.getPackage().isAnnotationPresent(null);
            System.out.println("Ups NullPointerException expected");
        } catch (NullPointerException npe) {
            System.out.println("OKAY");
        }
    }
}
---------------------Bb.java--------------------------
import java.io.PrintStream;

class Bb {

    public static void main(String argv[]) {
        try {
            Bb.class.getPackage().isAnnotationPresent(null);
            System.out.println("Ups NullPointerException expected");
        } catch (NullPointerException npe) {
            System.out.println("OKAY");
        }
    }
}
------------------------------------------------------
The execution log:
% jdk1.5.0-b49/solaris-sparc/bin/javac -d . B.java && jdk1.5.0-b49/solaris-sparc/bin/java
-showversion B.B
java version "1.5.0-beta2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta2-b49)
Java HotSpot(TM) Client VM (build 1.5.0-beta2-b49, mixed mode)

java.lang.ClassNotFoundException: B.package-info
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:290)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:279)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:236)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:303)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:237)
        at java.lang.Package.getPackageInfo(Package.java:350)
        at java.lang.Package.isAnnotationPresent(Package.java:372)
        at B.B.main(B.java:8)
Ups NullPointerException expected
% jdk1.5.0-b49/solaris-sparc/bin/javac -d . Bb.java && jdk1.5.0-b49/solaris-sparc/bin/java
-showversion Bb
java version "1.5.0-beta2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta2-b49)
Java HotSpot(TM) Client VM (build 1.5.0-beta2-b49, mixed mode)

OKAY
%


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