java：找不到命令

Question

我在 Centos 上安装 jdk 时遇到问题。
我确实安装了“java-1.8.0-openjdk-1.8.0.25-3.b17.el6_6.i386”但是当我运行“java -version”时，我看到了这个错误：

[root@JAVA java]# java -version

-bash: java: command not found

我也设置了 $PATH 变量：

[root@JAVA java]# echo $PATH

/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin:/root/bin:/root/bin:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.25-3.b17.el6_6.i386/jre/bin:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.25-3.b17.el6_6.i386/jre/bin/

怎么了？我真的试图搜索。:(请帮帮我。

更新：
我找到了 jre 并且这次返回：

[root@JAVA java]# locate jre
/etc/alternatives/jre
/etc/alternatives/jre_1.8.0
/etc/alternatives/jre_1.8.0_exports
/etc/alternatives/jre_1.8.0_openjdk
/etc/alternatives/jre_1.8.0_openjdk_exports
/etc/alternatives/jre_exports
/etc/alternatives/jre_openjdk
/etc/alternatives/jre_openjdk_exports
/usr/lib/jvm/jre
/usr/lib/jvm/jre-1.7.0
/usr/lib/jvm/jre-1.7.0-openjdk
/usr/lib/jvm/jre-1.8.0
/usr/lib/jvm/jre-1.8.0-openjdk
/usr/lib/jvm/jre-1.8.0-openjdk-1.8.0.25-3.b17.el6_6.i386
/usr/lib/jvm/jre-openjdk
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.25-3.b17.el6_6.i386/jre
/usr/lib/jvm-exports/jre
/usr/lib/jvm-exports/jre-1.7.0
/usr/lib/jvm-exports/jre-1.7.0-openjdk
/usr/lib/jvm-exports/jre-1.8.0
/usr/lib/jvm-exports/jre-1.8.0-openjdk-1.8.0.25-3.b17.el6_6.i386
/usr/lib/jvm-exports/jre-openjdk
/var/lib/alternatives/jre_1.7.0
/var/lib/alternatives/jre_1.8.0
/var/lib/alternatives/jre_1.8.0_openjdk
/var/lib/alternatives/jre_openjdk

这是当前路径？

更新2：

[root@JAVA java]# yum list installed| grep java
java-1.7.0-openjdk.i686  1:1.7.0.65-2.5.1.2.el6_5
java-1.7.0-openjdk-devel.i686
java-1.8.0-openjdk.i686  1.8.0.25-3.b17.el6_6
java-1.8.0-openjdk-devel.i686
java-1.8.0-openjdk-headless.i686
tzdata-java.noarch       2014h-1.el6     @updates
[root@JAVA java]# find / -name "java"
/usr/share/bash-completion/java
/usr/share/java
/usr/lib/java
/usr/lib/jvm-exports/java
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.25-3.b17.el6_6.i386/bin/java
/usr/lib/jvm/java
/usr/bin/java
/var/lib/alternatives/java
/etc/alternatives/java
/etc/pki/java
/etc/java

Answer 1

在 /etc 目录中的bashrcandprofile文件中添加以下两行。

export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.25-3.b17.el6_6.i386
export PATH=$JAVA_HOME/bin:$PATH

并尝试java -version。仍然有任何问题，请重新启动您的操作系统一次。