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Though I have Java enabled in the server, I'm facing java path issue

I'm generating war file using Gradle using shell script but I'm getting the below error.
ls
cd ClaimCenter1003
javac -version
chmod 777 gwb.sh
./gwb.sh warTomcatDbcp
05-Jun-2020 13:22:54 ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
05-Jun-2020 13:22:54
05-Jun-2020 13:22:54 Please set the JAVA_HOME variable in your environment to match the
05-Jun-2020 13:22:54 location of your Java installation.
Java is set in all the bamboo servers though not working in many server through the console but when I triggered the build from command Line it is working fine.
The build is working in some servers giving me the output as I needed:
javac 1.8.0_161
build 05-Jun-2020 13:18:01 Downloading file:/opt/bamboo-agent-home/xml-data/build-dir/GUID-GCCA-VAR/ClaimCenter1003/gradle/wrapper/./gradle.zip
build 05-Jun-2020 13:18:02 .................................................................................
build 05-Jun-2020 13:18:04
build 05-Jun-2020 13:18:04 Welcome to Gradle 5.1.1!
build 05-Jun-2020 13:18:04
build 05-Jun-2020 13:18:04 Here are the highlights of this release:
build 05-Jun-2020 13:18:04 - Control which dependencies can be retrieved from which repositories
build 05-Jun-2020 13:18:04 - Production-ready configuration avoidance APIs
Build going through when did in CLI
CLI BUILD IMAGE
Please help me through this. Thank you

Either JAVA_HOME or PATH is not set on the build agents which fail.
If i were in your situation, I'd primarily take steps to ensure those exist.
An easy way would be to "dockerize" your build by simply using docker, e.g.:
docker run openjdk:{JDK_VERSION} bash `./buildscript.sh`.
The other way is to ensure java is installed correctly on your build agent prior to starting the actual build steps. The problem will be that it appears your build agent instance is reused by other builds, so even if this works it may cause other errors downstream, hence I recommend virtualization your build via docker.
I'd check if both $JAVA and $JAVA_HOME are correctly set and if not, to either explicitly install java (see for example https://docs.aws.amazon.com/corretto/latest/corretto-8-ug/generic-linux-install.html to steps to install amazon coretto openjdk) or to set the environment variables manually if you're sure java exists on the target machine.

Issue with installing SBT on Windows

I'm installing GIT/SBT/ETC on a new Windows 10 computer. I have installed GIT and SBT and Java JDK13. I also added the appropriate JAVA_HOME and PATH variables for java.
Now when I go to do "sbt -version" I get the following output. The first time I ran it after setting the path variables correctly it did a bunch of stuff but ended with this error. Now I only get the error when I run the version command.
$ sbt -version
error: error while loading package, Missing dependency 'object java.lang.Object in compiler mirror', required by C:\Users\WilliamWelch\.sbt\boot\scala-2.10.6\lib\scala-library.jar(scala/package.class)
error: error while loading package, Missing dependency 'object java.lang.Object in compiler mirror', required by C:\Users\WilliamWelch\.sbt\boot\scala-2.10.6\lib\scala-library.jar(scala/runtime/package.class)
sbt script version: 1.3.4
All my googling turns up using some portions of these errors is that I should use JDK 8 but that isn't even supported anymore (as evidenced by needing an account to download it) so I can't imagine whatever bug that was hasn't been fixed in SBT by now.
Any ideas?

Jenkins Windows Slave not compiling because its using a JRE and not JDK

I've been searching all over for a solution to this. I have Jenkins running on Linux server. I created a Jenkins job and deployed my code on the Jenkins machine. Everything works great. I added a Windows slave machine and moved my job to the windows machine. I continue to get this error:
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] No compiler is provided in this environment. Perhaps you are running
on a JRE rather than a JDK?
I ensured the JAVA_HOME was set.
I also set the tools location for the windows slave:
C:\Program Files (x86)\Java\jre1.8.0_92\bin
Still the same error when it tries to compile the code on the Windows slave machine.
I was wondering is this a maven issue, where I need to define in the POM.xml the location of the JDK?

Solution is:
1) In the job you are running on the slave machine you need to set the JDK you want to build with.
2) Configure the slave server, add the JDK8 in the Tools section

Unable to locate the Javac Compiler using jre8

I upgraded from Java7 to Java8
JAVA_HOME is C:\Program Files (x86)\Java\jre8
I am trying to run maven install on a plugin and I get the following error
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project IcrMappingReport: Compilation failure
[ERROR] Unable to locate the Javac Compiler in:
[ERROR] C:\Program Files (x86)\Java\jre8\..\lib\tools.jar
In all the projects I updated the JRE System Library to jre8 and also in
Windows -> Preferences -> Java -> Installed JREs to C:\Program Files (x86)\Java\jre8
Can anyone tell me the problem?

You need the Java8 JDK not the JRE.
JDK stands for Java Development Kit, (includes Compiler)
JRE stands for Java Runtime Environment, so it's just for running Java Programs.
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

Compiler is included in JDK, not JRE.
You need a JDK in order to compile java source code.

Error when trying to debug my code

When I am trying to debug my code then I am getting the following error:
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.0.2
[INFO] ------------------------------------------------------------------------
[ERROR] **Failed to execute goal org.apache.maven.plugins:maven-compiler-**plugin:2.0.2:compile (default-compile) on project napier-am: Compilation failure
Unable to locate the Javac Compiler in:
C:\Program Files (x86)\Java\jre6\..\lib\tools.jar
Please ensure you are using JDK 1.4 or above and
not a JRE (the com.sun.tools.javac.Main class is required).
In most cases you can change the location of your Java
installation by setting the JAVA_HOME environment variable.
-> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

Maven uses JAVA_HOME to access Java's location on the machine. In Your situation You point it to JRE not JDK. Set properly JAVA_HOME environment variable and it will work.
If You want to have different location/version used for Maven only You can edit mvn.bat file with something like this.
set JAVA_HOME=<path_to_other_jdk>

Your JAVA_HOME path is not set. You need to set it as C:\Program Files\Java\jdk <version>

Everything is said in the exception:
Unable to locate the Javac Compiler in: C:\Program Files (x86)\Java\jre6..\lib\tools.jar
Your maven task is trying to "compile" something, but can't find the Java compiler (JDK=Java Development Kit).
Please ensure you are using JDK 1.4 or above and not a JRE.
Instead it finds a JRE=Java Runtime Environment (which is used for running java programs, not compiling them).
you can change the location of your Java installation by setting the JAVA_HOME environment variable
You need to have a valid JDK version installed and your JAVA_HOME environment variable must point to this JDK folder.

Yeah Thanks for the clue..
Everyone is correct.
In my JDK version tools.jar was not available thats why I was getting this problem its not finding tools.jar, While JAVA_HOME varible is configured correctly.
Need to focus on only Tools.jar so that installed again java version (i am using java 6)
Now come on project--> go thru the build path and Make sure----
click on
installed jre
edit
jre home =C:\Program Files (x86)\Java\jdk1.6.0_25
give path accordingly for which Your OS is compatible