javac command not found

Question

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

User · Answer

You have installed the Java Runtime Environment(JRE) but it doesn't contain javac.

So on the terminal get access to the root user sudo -i and enter the password. Type yum install java-devel, hence it will install packages of javac in fedora.

User · Answer

Linux Mint 19 3  I installed Java Oracle manually  like this     sudo ln -s  usr lib jvm java-1 8 0 211 bin javac  usr bin javac

User · Answer

Use the following sudo command   sudo yum install java-1 6 0-openjdk-devel

User · Answer

Is the javac executable in a directory that is part of your PATH   I don t know the CentOS equivalent of the Windows path but if you cd to the java sdk directory and run   javac does anything happen

User · Answer

Make sure you install JDK JRE first   follow these steps   open terminal go to your root dictionary by typing   cd     you will see Library folder   Now follow this path Library Java JVM bin  Once you get into bin you can see the javac file  Now you need to get the path of this folder for that just write this command   pwd   get the path for your javac

User · Answer

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    on more recent releases of CentOS e g  6 the command changes to  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

User · Answer

I don t know exactly what yum install java will actually install  But to check for javac existence do    gt  updatedb  gt  locate javac   preferably as root  If it s not there you ve probably only installed the Java runtime  JRE  and not the Java Development Kit  JDK   You re best off getting this from the Oracle site  as the Linux repos may be slightly behind with latest versions and also they seem to only supply the open-jdk as opposed to the Oracle Sun one  which I would prefer given the choice

User · Answer

Worked for me with this command    yum install java-devel

User · Answer

This worked for me  sudo dnf install java- lt version gt -devel

User · Answer

Install same version javac as your JRE   yum install java-devel

User · Answer

I use Fedora  currently 31   Even with JDK s installed  I still need to specify JAVAC HOME in the  bashrc  especially since I have 4 Java versions using sudo alternatives --configure java to switch between them   To find java location of java selected in alternatives   readlink -f   which java    In my case    usr java jdk1 8 0 241-amd64 jre bin java   So I set following in  bashrc to    export JAVA HOME  usr java jdk1 8 0 241-amd64 jre bin java   export JAVAC HOME  usr java jdk1 8 0 241-amd64 bin javac   export PATH  PATH  usr java jdk1 8 0 241-amd64 jre bin   export PATH  PATH  usr java jdk1 8 0 241-amd64 bin    Now javac    version gives   javac 1 8 0 241   This is useful for those who want to use Oracle s version  Just remember to change your  bashrc again if you make a change with java alternatives

[java] javac : command not found

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