In Oracle Enterprise Linux when I type java I am getting
bash: java: command not found
I have installed Java 1.6 and I have the following
sudo update-alternatives --config java
There are 2 programs which provide 'java'.
Selection Command
-----------------------------------------------
* 1 /usr/lib/jvm/jre-1.4.2-gcj/bin/java
+ 2 /usr/java/jre1.6.0_24/bin/java
How can I resolve this issue?
Thanks
6 Answers
You can add one of the Java path to PATH variable using the following command.
export PATH=$PATH:/usr/java/jre1.6.0_24/bin/
You can add this line to .bashrc file in your home directory. Adding this to .bashrc will ensure everytime you open bash it will be PATH variable is updated.
I had these choices:
-----------------------------------------------
* 1 /usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java
+ 2 /usr/lib/jvm/jre-1.7.0-openjdk.x86_64/bin/java
3 /home/ec2-user/local/java/jre1.7.0_25/bin/java
When I chose 3, it didn't work. When I chose 2, it did work.
I found the best way for me was to download unzip then symlink your new usr/java/jre-version/bin/java to your main bin as java.
I use the following script to update the default alternative after install jdk.
#!/bin/bash
export JAVA_BIN_DIR=/usr/java/default/bin # replace with your installed directory
cd ${JAVA_BIN_DIR}
a=(java javac javadoc javah javap javaws)
for exe in ${a[@]}; do
sudo update-alternatives --install "/usr/bin/${exe}" "${exe}" "${JAVA_BIN_DIR}/${exe}" 1
sudo update-alternatives --set ${exe} ${JAVA_BIN_DIR}/${exe}
done
- Execute: vi ~/.bashrc OR vi ~/.bash_profile
(if above command will not allow to update the .bashrc file then you can open this file in notepad by writing command at terminal i.e. "leafpad ~/.bashrc")
- add line : export JAVA_HOME=/usr/java/jre1.6.0_24
- save the file (by using
shift + Z + Z) - source ~/.bashrc OR source ~/.bash_profile
- Execute : echo $JAVA_HOME (Output should print the path)
I was having the same problem on my ec2 machine. Below these 2 commands helped me to fix the issue.
sudo yum update
sudo yum install java-11-amazon-corretto
