Java applications failed with J2SDK 1.4.2_17 installed from packages on S10U5

Customer installed J2SDK1.4.2_17 with the downloaded packages j2sdk-1_4_2_17-solaris-sparc.tar.Z and j2sdk-1_4_2_17-solaris-sparcv9.tar.Z on a v880 running S10U5. But it failed to run any Java applications.

# /usr/jdk1.4/bin/java -jar /usr/java/demo/jfc/Font2DTest/Font2DTest.jar
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/GNOME/Accessibility/JavaBridge (Unsupported major.minor version 49.0)
        at java.lang.ClassLoader.defineClass0(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:282)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
        at java.awt.Toolkit.loadAssistiveTechnologies(Toolkit.java:684)
        at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:774)
        at java.awt.Window.getToolkit(Window.java:688)
        at java.awt.Window.init(Window.java:246)
        at java.awt.Window.<init>(Window.java:275)
        at java.awt.Frame.<init>(Frame.java:401)
        at javax.swing.JFrame.<init>(JFrame.java:198)
        at Font2DTest.main(Font2DTest.java:888)

But if installed JDK with the self-extracted files j2sdk-1_4_2_17-solaris-sparc.sh and j2sdk-1_4_2_17-solaris-sparcv9.sh, it worked fine.

The JAVA_HOME and CLASSPATH were set correctly. Apparently there is something wrong with the package version of the JDK.

This seems only happened on S10U5.
#uname -a
SunOS sapsu1 5.10 Generic_127127-11 sun4u sparc SUNW,Sun-Fire-880