右键"我的电脑"->属性->高级->环境变量->系统变量->"CLASSPATH"->->变量值:.\C:\j2sdk1.4.2_04\lib\dt.jar;C:\j2sdk1.4.2_04\lib\tools.jar;C:\tomcat4.0\jakarta-tomcat-4.1.30;C:\tomcat5.0\jakarta-tomcat-5.0.27;C:\j2sdk1.4.2_04\lib\msbase.jar;C:\j2sdk1.4.2_04\lib\mssqlserver.jar;C:\j2sdk1.4.2_04\lib\msutil.jar
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还需新建一个java_home,只设为:安装jdk的路径
是tomcat需要的
ALLUSERSPROFILE=C:\Documents and Settings\All Users
APPDATA=C:\Documents and Settings\czf\Application Data
CLASSPATH=.\C:\j2sdk1.4.2_04\lib\dt.jar;C::\j2sdk1.4.2_04\lib\msutil.jar
CLIENTNAME=Console
CommonProgramFiles=C:\Program Files\Common Files
COMPUTERNAME=CHEN1
ComSpec=C:\WINDOWS\system32\cmd.exe
HOMEDRIVE=C:
HOMEPATH=\Documents and Settings\czf
LOGONSERVER=\\CHEN1
NUMBER_OF_PROCESSORS=1
OS=Windows_NT
Path=C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;path=.\;C:\j2sdk1.4
.2_04;C:\WINDOWS\system32;%;;c:\j2sdk1.4.2_04\bin
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH
PROCESSOR_ARCHITECTURE=x86
PROCESSOR_IDENTIFIER=x86 Family 6 Model 11 Stepping 1, GenuineIntel
PROCESSOR_LEVEL=6
PROCESSOR_REVISION=0b01
ProgramFiles=C:\Program Files
PROMPT=$P$G
SESSIONNAME=Console
SystemDrive=C:
SystemRoot=C:\WINDOWS
TEMP=C:\DOCUME~1\czf\LOCALS~1\Temp
TMP=C:\DOCUME~1\czf\LOCALS~1\Temp
USERDOMAIN=CHEN1
USERNAME=czf
USERPROFILE=C:\Documents and Settings\czf
windir=C:\WINDOWSC:\Documents and Settings\czf>cd..C:\Documents and Settings>cd,,
C:\Documents and SettingsC:\Documents and Settings>cd..C:\>set
ALLUSERSPROFILE=C:\Documents and Settings\All Users
APPDATA=C:\Documents and Settings\czf\Application Data
CLASSPATH=.\C:\j2sdk1.4.2_04\lib\dt.jar;C::\j2sdk1.4.2_04\lib\msutil.jar
CLIENTNAME=Console
CommonProgramFiles=C:\Program Files\Common Files
COMPUTERNAME=CHEN1
ComSpec=C:\WINDOWS\system32\cmd.exe
HOMEDRIVE=C:
HOMEPATH=\Documents and Settings\czf
LOGONSERVER=\\CHEN1
NUMBER_OF_PROCESSORS=1
OS=Windows_NT
Path=C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;path=.\;C:\j2sdk1.4
.2_04;C:\WINDOWS\system32;%;;c:\j2sdk1.4.2_04\bin
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH
PROCESSOR_ARCHITECTURE=x86
PROCESSOR_IDENTIFIER=x86 Family 6 Model 11 Stepping 1, GenuineIntel
PROCESSOR_LEVEL=6
PROCESSOR_REVISION=0b01
ProgramFiles=C:\Program Files
PROMPT=$P$G
SESSIONNAME=Console
SystemDrive=C:
SystemRoot=C:\WINDOWS
TEMP=C:\DOCUME~1\czf\LOCALS~1\Temp
TMP=C:\DOCUME~1\czf\LOCALS~1\Temp
USERDOMAIN=CHEN1
USERNAME=czf
USERPROFILE=C:\Documents and Settings\czf
windir=C:\WINDOWSC:\>javac HelloWorld.javaC:\>java HelloWorld
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorldC:\>java HelloWorld
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorldC:\>java HelloWorld
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorldC:\>java HelloWorld
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorldC:\>java HelloWorld
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorldC:\>java HelloWorld
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorldC:\>java HelloWorld
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorldC:\>java HelloWorld.class
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld/classC:\>set
ALLUSERSPROFILE=C:\Documents and Settings\All Users
APPDATA=C:\Documents and Settings\czf\Application Data
CLASSPATH=.\C:\j2sdk1.4.2_04\lib\dt.jar;C::\j2sdk1.4.2_04\lib\msutil.jar
CLIENTNAME=Console
CommonProgramFiles=C:\Program Files\Common Files
COMPUTERNAME=CHEN1
ComSpec=C:\WINDOWS\system32\cmd.exe
HOMEDRIVE=C:
HOMEPATH=\Documents and Settings\czf
LOGONSERVER=\\CHEN1
NUMBER_OF_PROCESSORS=1
OS=Windows_NT
Path=C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;path=.\;C:\j2sdk1.4
.2_04;C:\WINDOWS\system32;%;;c:\j2sdk1.4.2_04\bin
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH
PROCESSOR_ARCHITECTURE=x86
PROCESSOR_IDENTIFIER=x86 Family 6 Model 11 Stepping 1, GenuineIntel
PROCESSOR_LEVEL=6
PROCESSOR_REVISION=0b01
ProgramFiles=C:\Program Files
PROMPT=$P$G
SESSIONNAME=Console
SystemDrive=C:
SystemRoot=C:\WINDOWS
TEMP=C:\DOCUME~1\czf\LOCALS~1\Temp
TMP=C:\DOCUME~1\czf\LOCALS~1\Temp
USERDOMAIN=CHEN1
USERNAME=czf
USERPROFILE=C:\Documents and Settings\czf
windir=C:\WINDOWSC:\>当我执行
C:\>javac HelloWorld.java
C:\>java HelloWorld
后提示:
C:\Documents and Settings\czf>java HelloWorld
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld
不知道错在哪 里了、
(C) 版权所有 1985-2001 Microsoft Corp.C:\Documents and Settings\czf>cd..C:\Documents and Settings>cd..C:\>set
ALLUSERSPROFILE=C:\Documents and Settings\All Users
APPDATA=C:\Documents and Settings\czf\Application Data
CLASSPATH=.\C:\j2sdk1.4.2_04\lib\dt.jar;C:\j2sdk1.4.2_04\lib\tools.jar;C:\tomcat
-4.0\jakarta-tomcat-4.1.30;C:\tomcat-4.0\jakarta-tomcat-4.1.30;C:\j2sdk1.4.2_04\
lib\msbase.jar;C:\j2sdk1.4.2_04\lib\mssqlserver.jar;C:\j2sdk1.4.2_04\lib\msutil.
jar
CLIENTNAME=Console
CommonProgramFiles=C:\Program Files\Common Files
COMPUTERNAME=CHEN1
ComSpec=C:\WINDOWS\system32\cmd.exe
HOMEDRIVE=C:
HOMEPATH=\Documents and Settings\czf
JAVA_HOME=C:\tomcat-4.0
LOGONSERVER=\\CHEN1
NUMBER_OF_PROCESSORS=1
OS=Windows_NT
Path=C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;path=.\;C:\j2sdk1.4
.2_04;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\j2sdk1.4.2_04\b
in;C:\Program Files\Microsoft SQL Server\80\Tools\BINN;;c:\j2sdk1.4.2_04\bin
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH
PROCESSOR_ARCHITECTURE=x86
PROCESSOR_IDENTIFIER=x86 Family 6 Model 11 Stepping 1, GenuineIntel
PROCESSOR_LEVEL=6
PROCESSOR_REVISION=0b01
ProgramFiles=C:\Program Files
PROMPT=$P$G
SESSIONNAME=Console
SystemDrive=C:
SystemRoot=C:\WINDOWS
TEMP=C:\DOCUME~1\czf\LOCALS~1\Temp
TMP=C:\DOCUME~1\czf\LOCALS~1\Temp
USERDOMAIN=CHEN1
USERNAME=czf
USERPROFILE=C:\Documents and Settings\czf
windir=C:\WINDOWSC:\>java HelloWorld
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorldC:\>
不知道错在哪 里啊,这样我jdk不是就不能用了,那我就更不能编jsp了,请问我这里错在哪 里了
.;C:\j2sdk1.4.2_04\lib\dt.jar;C:\j2sdk1.4.2_04\lib\msutil.jar
你的路径多了一个"\"。
.\;C:\j2sdk1.4.2_04\lib\dt.jar;C:\j2sdk1.4.2_04\lib\tools.jar;然后采用tomcat 5.28安装版,一次搞定,保证OK,一切就是这么简单。
我用jakarta-tomcat-5.5.2.exe安装时,一直都装不成功不知道为什么啊。反正一以c:\j2re1.4.2_04后点next就停在那里了走不了