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I am trying to find the JAVA_HOME path

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问题 I ran echo %JAVA_HOME% to find my path. I know it is the wrong path but I am not sure how to fix it. Any help would be appreciated. C:\Users\Cynthia>echo %JAVA_HOME% C:\Program Files\Java\jdk1.6.0_33\C:\Program Files\Java\jdk1.0.60_33\C:\Program Files\Java\jdk1.0.60_33\%JAVA_HOME%\bin\bin\bin C:\Users\Cynthia> 回答1: On windows, right-click "my computer" and choose "properties. Go to: "advanced system settings" and then to "environment variables": Then go over the variables and set %JAVA_HOME%:

Checking/getting JAVA_HOME Variable from Java

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问题 Inside a Java program, how can I read the JAVA_HOME variable (to be sure it is set the correct way)? Similarly, how can I get the path of the bin folder? That is, the path usually set in Windows via: path %path%;%JAVA_HOME%\bin Note: I am using the OpenJDK build by Alexkasko. 回答1: Since both PATH and JAVA_HOME are environment variables, you should be able to read both of their values in a similar way: String javaHome = System.getenv("JAVA_HOME"); String path = System.getenv("PATH"); 回答2: Try

Eclipse can't find jdk installed with sdkman

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问题 Im new with sdkman, but I managed to install it and install some software with it: JDK, Gradle and a few others. The problem is that after I downloaded Eclipse and tried to run it, it just simply can't find the JDK. I have already exported JAVA_HOME, and PATH. In fact, I can actually run java, javac and other Java commands from the terminal, I even tried with update-alternatives. I have changed the ownership of the eclipse folder with no results, Eclipse cannot find the JDK. I had to install

${env.JAVA_HOME} not found - Ant

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问题 In my build.xml file, I have these lines: <property environment="env"/> <echo message="JAVA_HOME is set to = ${env.JAVA_HOME}" /> On some machine, this would print "JAVA_HOME is set to = /usr/jdk1.6" But on some others, it would print this "JAVA_HOME is set to = ${env.JAVA_HOME}" Does anyone know what might cause this? Thanks 回答1: The message tells you that Ant was not able to resolve the property env.JAVA_HOME ; this means that the environment variable JAVA_HOME was not set in that machine.

Java: System cannot find the file C:\\ … java.exe

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I have installed Java 8 and set my JAVA_HOME and JRE_HOME paths and added %JAVA_HOME% to the start of the path variable. I created a helloworld.java application and am able to compile it using: javac helloworld.java However, when I try to run: java helloworld I get the error: The system cannot find the file C:\ProgramData\Oracle\Java\javapath\java.exe How can I solve this? Just set %JAVA_HOME% /bin to your path variable. 1.Just go to C:\ProgramData\Oracle\Java\javapath\ 2.You will find there shortcuts for java.exe,javaw.exe,javaws.exe which are pointing to a location where they actually are

Ant can't find Javac. No matter what I do it always claims JAVA_HOME is “C:\Program Files\Java\jre6”

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问题 ...and that's wrong. Here's the error I get: BUILD FAILED C:_TraderPlatform\Clients\Open\Open\Java\Applets\PPDataTransporter\nbproject\build-impl.xml:338: The following error occurred while executing this line: C:_TraderPlatform\Clients\Open\Open\Java\Applets\PPDataTransporter\nbproject\build-impl.xml:158: Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK. It is currently set to "C:\Program Files\Java\jre6" I've set

I still see Java 1.8 when I am doing java -version after downgrading to 1.7

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问题 I downgraded java 1.7 from 1.8, but I still see 1.8 when I do java -version . I changed the path and also made JAVA_HOME changed for 1.7 as JAVA_HOME: C:\Program Files (x86)\Java\jdk1.7.0_79 PATH: C:\Program Files(x86)\Java\jdk1.7.0_79\bin For some reason I also have this in my path: C:\ProgramData\Oracle\Java\javapath , which I believe keeps this 1.8 version. When I take off this from the path, I get this message: C:\Program Files\Java\jre7\lib\amd64\jvm.cfg . I don't know what's going on.

“Error: JAVA_HOME is not defined correctly.” in building Jikes rvm

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问题 When I built the Jikes RVM on Ubuntu, I got this error. Any idea? bin/buildit localhost production ---> Config: production /bin/bash --login -c '/bin/bash --login -c " cd /home/jack/Programs/jikesrvm-3.1.2 && export JAVA_HOME=/opt/jdk1.6.0 && ant very-clean -Dhost.name=ia32-linux && ant check-components-properties -Dhost.name=ia32-linux -Dtarget.name=ia32-linux -Dcomponents.cache.dir=/home/jack/.buildit_components_cache && ant -Dtarget.name=ia32-linux -Dconfig.name=production -Dhg.revision=

What is the good way of setting JAVA_HOME system wide in Linux? /etc/profile or /etc/profile.d/custom.sh?

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问题 There doesn't seem to be an official answer as to where to set your system wide JAVA_HOME in Linux, at least I haven't found one (looked on Oracle website and some google fu). Many forums and comments point at setting it in /etc/profile or even /etc/bashrc/ (or /etc/bashrc.bashrc) but on my system both these files headers are quite specific about creating "a custom.sh shell script in /etc/profile.d/ [...] as this will prevent the need for merging in future updates." instead of directly

$JAVA_HOME path not sourced correctly in ~/bash_profile at login

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Upon logging into my CentOS 7 VM, my $JAVA_HOME is always set to : /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.131-11.b12.el7.x86_64/jre , which is incorrect. My ~/.bash_profile reads: # .bash_profile # Get the aliases and functions if [ -f ~/.bashrc ]; then . ~/.bashrc fi # User specific environment and startup programs JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.144-0.b01.el7_4.x86_64/jre export JAVA_HOME PYCHARM_HOME=/opt/pycharm-community-2017.2.3/ export PYCHARM_HOME ECLIPSE_HOME=/opt/eclipse export ECLIPSE_HOME export SPARK_HOME=/opt/spark PATH=$PATH:$HOME/.local/bin:$HOME/bin:$JAVA_HOME