请教Java编译的问题
我的Java编译没问题，但运行时出错,能运行jar程序
Exception in thread "main"
java.lang.NoClassDefFoundError: HelloWorld
我的JDK环境变量应该没问题,如下
#j2sdk path
JAVA_HOME=/usr/java/j2sdk1.4.0_02
export JAVA_HOME
CLASSPATH=.:/usr/java/j2sdk1.4.0_02:/usr/java/j2sdk1.4.0_02/lib:/usr/java/j2sdk1.4.0_02/jre/lib:/usr/java/j2sdk1.4.0/lib/tools.jar:/usr/java/j2sdk1.4.0_02/lib/htmlconverter.jar:/usr/java/j2sdk1.4.0_02/lib/dt.jar
export CLASSPATH
PATH=$PATH
JAVA_HOME/bin
JAVA_HOME/jre/bin
export PATH
请各位高手指教
