gkeytool error

[Haoyang Lin]

Hello,

I did : gkeytool
then:
 
errors:
 
 java.lang.NoClassDefFoundError: gnu/classpath/tools/keytool/Main
    <<No stacktrace available>>
 Caused by: java.lang.ClassNotFoundException:
 gnu.classpath.tools.keytool.Main not found in java.lang.ClassLoader

$1{urls=[file:/usr/local/classpath/share/classpath/glibj.zip,file:/usr/local/classpath/bin/./,file:/usr/local/classpath/share/classpath/tools.zip],
 parent=null}
    at java.net.URLClassLoader.findClass(URLClassLoader.java:530)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:342)
    at java.lang.ClassLoader$1.loadClass(ClassLoader.java:1112)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:294)

glibj.zip and tools.zip exist in /usr/local/classpath/share/classpath/ 
 What should I do? Please help.

thank you in advance
haoyang