我写了简单的程序“HelloWorld”,放在C盘根目录下面,编译运行都能成功,但是放在C:\cn\edu\swu这个目录下面编译能够通过,运行时出现如下错误,请大虾们帮帮忙,给指点指点,感激不尽。
Exception in thread "main" java.lang.NoClassDefFoundError: cn\edu\swu\HelloWorld
(wrong name: HelloWorld)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Exception in thread "main" java.lang.NoClassDefFoundError: cn\edu\swu\HelloWorld
(wrong name: HelloWorld)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
path为:C:\jdk1.5.0_05\bin classpath为.;C:\jdk1.5.0_05\lib\tools.jar;C:\jdk1.5.0_05\lib\dt.jar,都是用户变量。
C:\Documents and Settings\Administrator>cd c:\C:\>javac cn\edu\swu\HelloWorld.javaC:\>java -classpath c:\cn.edu.swu.HelloWorld
Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
(to execute a jar file)where options include:
-client to select the "client" VM
-server to select the "server" VM
-hotspot is a synonym for the "client" VM [deprecated]
The default VM is client. -cp <class search path of directories and zip/jar files>
-classpath <class search path of directories and zip/jar files>
A ; separated list of directories, JAR archives,
and ZIP archives to search for class files.
-D<name>=<value>
set a system property
-verbose[:class|gc|jni]
enable verbose output
-version print product version and exit
-version:<value>
require the specified version to run
-showversion print product version and continue
-jre-restrict-search | -jre-no-restrict-search
include/exclude user private JREs in the version search
-? -help print this help message
-X print help on non-standard options
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
enable assertions
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
disable assertions
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions
-agentlib:<libname>[=<options>]
load native agent library <libname>, e.g. -agentlib:hprof
see also, -agentlib:jdwp=help and -agentlib:hprof=help
-agentpath:<pathname>[=<options>]
load native agent library by full pathname
-javaagent:<jarpath>[=<options>]
load Java programming language agent, see java.lang.instrument -splash:<imagepath>
show splash screen with specified image
好运!
http://blog.csdn.net/mekoradji/archive/2008/03/08/2158179.aspx
你仿造我文章的最后运行程序的格式,去弄吧!我想应该没有问题的。呵呵
Hello World
我这样又运行成功了
classpath=".;c:\cn\edu\swu"
然后执行如下步骤:C:\Documents and Settings\Administrator>javac c:\cn\edu\swu\HelloWorld.javaC:\Documents and Settings\Administrator>java HelloWorld
就OK了谢谢6楼的文章,谢谢大虾们的意见,衷心地感谢了!