Problem about loader(java.exe)....

hi, everyone.
// HelloWorld.class is my test java program
E:\myapp>java HelloWorld
Exception thrown.
java.lang.ClassNotFoundException: COM.cloudscape.core.RmiJdbcDriver
-------->the driver class is in cloudscape.jar
--------> then I put the classes path on
E:\myapp>java -cp c:\jdk1.3.1\jre\lib\ext\cloudscape.jar HelloWorld
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld
--------> got the driver..... but it lost my class!
--------> tell it where my class is.
E:\myapp>java -cp c:\jdk1.3.1\jre\lib\ext\cloudscape.jar e:\yun\HelloWorld
Exception in thread "main" java.lang.NoClassDefFoundError: e:\yun\HelloWorld
-------->problem is still there..
I was puzzled.
thanks..

Solution 1: move cloudscape.jar to c:\jdk1.3.1\lib\ext\cloudscape.jar
Solution 2: Run with E:\myapp>java -cp .;c:\jdk1.3.1\jre\lib\ext\cloudscape.jar HelloWorld
Solution 3: Run with java -cp e:\yun\;c:\jdk1.3.1\jre\lib\ext\cloudscape.jar HelloWorld (if HelloWorld.class is in e:\yun\)

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