Question

输入java -version命令后提示结果如下，是什么意思？？哪位能看懂，在线等。。。。

libgcj-java-placeholder.sh
This script is a placeholder for the /usr/bin/java
master link required by jpackage.org conventions. libgcj's
rmiregistry, rmic and jar tools are now slave symlinks to these
masters, and are managed by the alternatives(8) system.
This change was necessary because the rmiregistry, rmic and jar tools
installed by previous versions of libgcj conflicted with symlinks
installed by jpackage.org JVM packages.
This script was designed to be overridden by the supported RHEL3 JRE
packages, java-1.4.2-bea and java-1.4.2-ibm. It is installed as an
alternative symlink as /usr/bin/java. It will override a third-party
(non-RHEL3) JRE's java command if the JRE's bin directory is listed
after /usr/bin in PATH. In that case, it is recommended that the
third-party JRE's bin directory be listed first in PATH instead.
gij (GNU libgcj) version 3.2.3 20030502 (Red Hat Linux 3.2.3-52)
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Answer 1

你把需要配置的环境变量再好好看看，是不是路径弄错了

Answer 2

你用的是linux吧：
/usr/bin/java 这个命令是一个软连接，其连接到libgcj-java-placeholder.sh这个脚本。运行/usr/bin/java等于运行libgcj-java-placeholder.sh
上面显示的是运行libgcj-java-placeholder.sh打印出来的信息。是关于这个脚本的说明。

追问

恩对linux的，那我要怎样才能看到jdk的版本呢，jdk版本不同跟乱码有关系吗？

追答

你要看jdk的版本的话就要调用java这个程序啊。你下linux版jdk的bin目录下就有了,你要将那个bin目录加入PATH就行了，你要删除当前/usr/bin/java这个连接或者将bin目录放到/usr/bin之前

Answer 3

貌似一个简介，无须深究，在下愚昧，只能掠过！

Answer 4

不好意思，看不懂