JBUILD中 Fatal Error: Unable to locate package java.lang in classpath or bootclasspath是怎么回事啊

Question

http://www.javaworld.com.tw/jute/post/view?bid=10&id=65090&sty=3&age=0

Answer 1

http://forum.java.sun.com/wireless/thread.jsp?thread=560450&forum=82&message=2754828

Answer 2

需要重新设置一下你的工程中的jdk路径

Answer 3

同意,基本上就是JDK的問題. TOOLS---->reference.看吧

Answer 4

JDK的配置问题修改的方式有两种，1、通过JB本身的配置向导，在JBuilder2005中是：Tools=>Configure=>JDKs=>User Home=>选择java version 1.4.2_04-b05，右边的class中，选择JB安装目录中的X:\Borland\JBuilder2005\jdk1.4\下面的如下目录里的.jar文件
jre/javaws/javaws.jar
jre/lib/charsets.jar
jre/lib/ext/dnsns.jar
jre/lib/ext/ldapsec.jar
jre/lib/ext/localedata.jar
jre/lib/ext/sunjce_provider.jar
jre/lib/im/indicim.jar
jre/lib/im/thaiim.jar
jre/lib/jce.jar
jre/lib/jsse.jar
jre/lib/plugin.jar
jre/lib/rt.jar
jre/lib/sunrsasign.jar
lib/dt.jar
lib/htmlconverter.jar
lib/tools.jar保存即可。2、直接修改
X:\Documents and Settings\Administrator\.jbuilder2005\java version 1.4.2_04-b05.library文件内容。把.jar写入即可。
要先关闭已经打开的JB。
然后打开java version 1.4.2_04-b05.library文件，在
<class>
</class>
的中间增加如下的路径，路径根据自己JB安装的实际路径进行修改即可。
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/javaws/javaws.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/lib/charsets.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/lib/ext/dnsns.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/lib/ext/ldapsec.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/lib/ext/localedata.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/lib/ext/sunjce_provider.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/lib/im/indicim.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/lib/im/thaiim.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/lib/jce.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/lib/jsse.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/lib/plugin.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/lib/rt.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/jre/lib/sunrsasign.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/lib/dt.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/lib/htmlconverter.jar]</path>
    <path>[F%|/Borland/JBuilder/jdk1.4/lib/tools.jar]</path>
保存，重新启动JB，就行了。Gook Luck!Read a bit and take it out , then come back read some more .