javac：未找到命令 [英] javac : command not found

问题描述

我使用命令 yum install java 在我的 CentOS版本5.5 机器上安装了java。但我无法使用javac编译一个类。

我需要安装任何其他包吗？

我尝试找到 javac 可执行文件，但我无法找到它。

/ usr / bin / java 如下链接：

/ usr / bin / java - > / etc / alternatives / java

/ etc / alternatives / java - > /usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java

我已经看到以下输出 yum list installed | grep java ：

  java-1.6.0-openjdk.x86_64 1：1.6.0.0-1.16.b17.el5 installed 
 tzdata-java.x86_64 2011b-1.el5 installed 
   ：//pkgs.org/centos-5-rhel-5/centos-rhel-updates-x86_64/java-1.6.0-openjdk-1.6.0.0-1.16.b17.el5.x86_64.rpm.htmlrel = nofollow>不包含 javac  。对于 javac ，您必须安装 OpenJDK开发环境。您可以安装 java-devel 或 java-1.6.0-openjdk-devel  c> javac 。
 
 
 
顺便说一下：你可以找出哪个包提供 javac 使用  yum  search ，例如
  su -c'yum提供javac'
  
另一个注意事项：使用 yum 和 openjdk 只是一种安装JDK的可能性。许多人喜欢Sun / Oracle的原始SDK。请参见如何在CentOS上安装Java SDK？和其他链接。 
 
I have installed java in my CentOS release 5.5 machine using the command yum install java. But I am unable to compile a class using javac.

Do I need to install any other package? 

I have tried to locate the javac executable but i am unable to locate it.

/usr/bin/java is linked as follows:

/usr/bin/java -> /etc/alternatives/java

/etc/alternatives/java -> /usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java

I have seen the following output by yum list installed |grep java:
java-1.6.0-openjdk.x86_64              1:1.6.0.0-1.16.b17.el5          installed
tzdata-java.x86_64                     2011b-1.el5                     installed

解决方案
You installed the Java Runtime Environment (JRE) only, which does not contain javac. For javac, you have to install the OpenJDK Development Environment. You can install java-devel or java-1.6.0-openjdk-devel, which both include javac.

By the way: you can find out which package provides javac with a yum search, e.g.
su -c 'yum provides javac'
Another note: using yum and openjdk is only one possibility to install the JDK. Many people prefer Sun/Oracle's "original" SDK. See How to install Java SDK on CentOS? and links for alternatives.

                        
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