Ant Error Unable To Find A Javac Compiler
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Unable To Find A Javac Compiler Com.sun.tools.javac.main Is Not On The Classpath. Ant
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Unable To Find A Javac Compiler Ubuntu
with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign unable to find a javac compiler eclipse java_home up Ant build not working: unable to find a javac compiler up vote 14 down vote favorite 2 I am trying to run some Java EE examples. Ant is suggesting: Perhaps JAVA_HOME does not point to the JDK. It is currently set to "C:\Program Files\Java\jre7 My JAVA_HOME variable is: C:\Program Files\Java\jdk1.7.0_03 when I look at my windows 7 variables However, my path is (notice the jdk1.6.0_26): %M2_HOME%\bin;%ANT_HOME%\bin;%JAVA_HOME%\bin;%SystemRoot%\system32;%SystemRoot%; %SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\; C:\Program Files\Microsoft Application Virtualization Client;%M2%; C:\Program Files\QuickTime\QTSystem\;C:\Program Files\TortoiseSVN\bin; %GLASSFISH%;%GLASSFISH_PARENT%; PATH=C:\Maven\apache-maven-2.2.1\bin;C:\Ant\apache-ant-1.8.2\bin;**C:\Program File s\Java\jdk1.6.0_26\bin;**C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C :\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Microsoft Applicatio n Virtualization Client;C:\Maven\apache-maven-2.2.1\bin;C:\Program Files\QuickTi me\QTSystem\;C:\Program Files\TortoiseSVN\bin;C:\glassfish3\glassfish\bin;C:\gla ssfish3\bin;C:\Sun\jwsdp-2.0\jwsdp-shared\bin Do I have to do anything special to get windows to save my path? More Info: C:\javaeetutorial5\examples\web\hello2>ant Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre7\li b\tools.jar Buildfile: C:\javaeetutorial5\examples\web\hello2\build.xml -pre-init: init: de
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Unable To Find A Javac Compiler Linux
ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join unable to find javac compiler windows the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a unable to find a javac compiler centos minute: Sign up Unable to find a javac compiler com.sun.tools.javac.Main is not on the classpath error up vote 2 down vote favorite 1 I am trying to run java application and I am getting following error, Unable to find a http://stackoverflow.com/questions/9930181/ant-build-not-working-unable-to-find-a-javac-compiler javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK I have gone through many SO questions and found solution is JAVA_HOME should be point to JDK, not JRE. Then I have tried to print JAVA_HOME in command prompt, I had set this JAVA_HOME from my computer->properties->env variables -> system vars as below, I had also added new variable in eclipse using preferences as, And finally I am still getting the same error. Whats wrong with http://stackoverflow.com/questions/29668849/unable-to-find-a-javac-compiler-com-sun-tools-javac-main-is-not-on-the-classpath JAVA_HOME ? Update : In eclipse-preferences-installed jres there is only one entry is present and which is jdk and selected, And under project properties java build path-libraries there is JRE System Liberary [jdk1.8.0_31] is used. Update 1 : C:\Program Files\Java\jdk1.8.0_31 have folder named jre. Is that jre folder causing this issue ? Can I remove this folder ? Is there is any way to add only jdk liberary in project ? java eclipse classpath share|improve this question edited Apr 16 '15 at 13:27 asked Apr 16 '15 at 8:06 fledgling 1,79611943 Pleas confirm whether you started a new console after setting variables or not ? If it was a new console than to me everything else looks clean and correct, I suggest you uninstall and reinstall java ? Sometimes installation errors are there. Use .msi or .exe file to install rather than copy pasting folder. –aProgrammer Apr 16 '15 at 8:13 add a comment| 1 Answer 1 active oldest votes up vote 4 down vote accepted Eclipse is an IDE and as such, it has (at least) two Java versions: The one which it uses itself to run (JAVA_HOME) and a JVM which it uses to run your application. The two don't need to be the same. So to fix your problem, you need to look into Eclipse's preferences, specifically Installed JREs which gives you a list of Java VMs which Eclipse will use to run Java code from projects. My g
Things LocationTech Long-Term Support PolarSys Science OpenMDM More Community Marketplace Events Planet Eclipse Newsletter Videos Participate Report a Bug Forums Mailing Lists https://wiki.eclipse.org/FAQ_Why_can't_my_Ant_build_find_javac%3F Wiki IRC How to Contribute Working Groups Automotive Internet of Things http://forums.devshed.com/java-help-9/ant-error-unable-javac-compiler-185567.html LocationTech Long-Term Support PolarSys Science OpenMDM Toggle navigation Breadcrumbs Home Eclipse Wiki FAQ Why can't my Ant build find javac? Log in Jump to: navigation, search ---Navigation---Main PageCommunity portalCurrent eventsRecent changesRandom pageHelpNavigation Main Page Community portal Current events Recent changes Random page unable to Help ---Toolbox---Page informationPermanent linkPrintable versionSpecial pagesRelated changesWhat links hereToolbox Page information Permanent link Printable version Special pages Related changes What links here Page Discussion View source History FAQ Why can't my Ant build find javac? Ant tasks that include the javac task for compiling Java source will fail if a Java compiler cannot be unable to find found. This results in an error message like the following: 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 This simply means that Ant could not find a Java compiler. The easiest solution is to make sure that tools.jar, which is included with any JDKas opposed to a JREis on Ants classpath. You can add items to Ants classpath from the Ant > Runtime preference page. If you launch Eclipse by using a full JDK instead of a JRE, tools.jar should appear on the Ant classpath automatically. Alternatively, Ant supports the notion of a compiler adapter, allowing you to plug in your own Java compiler, such as the Java compiler that is built into Eclipse. The Eclipse compiler adapter is found in the org.eclipse.jdt.core in jdtCompilerAdapter.jar. Again, you need to make sure that this JAR is on Ants classpath from the Ant preference page. Then, simply add the follow
Search Username Password Remember Me? Register Lost Password? facebook google twitter rss Free Web Developer Tools Advanced Search Forum Programming Languages Java Help ant error: unable to find a javac compiler Thread: ant error: unable to find a javac compiler Share This Thread Tweet This + 1 this Post To Linkedin Subscribe to this Thread Subscribe to This Thread September 22nd, 2004,07:34 AM #1 No Profile Picture jamieB View Profile View Forum Posts Contributing User Devshed Novice (500 - 999 posts) Join Date Nov 2002 Posts 596 Rep Power 25 ant error: unable to find a javac compiler I was using ant 1.5 with no problems until recently...then upgraded to 1.6 and had all sorts of problems so have gone back to 1.5. Now I get the error: Code: ...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 (JAVA_HOME is correct) when trying to compile anything. I've read a ton of posts about this, all of which say to copy tools.jar into $ANT_HOME/lib - I've done that and still got the problem. Any ideas? TIA Faq Reply With Quote September 27th, 2004,05:16 PM #2 No Profile Picture JD1 View Profile View Forum Posts Registered User Devshed Newbie (0 - 499 posts) Join Date Sep 2004 Posts 1 Rep Power 0 also unable to find a javac compiler unable to find a javac compiler I have a similar problem using Ant 1.6 on Windows. This is unfortunately not a solution to your question. I have a similar problem to yours so when you find out the answer I'd like to know what it is! (I also tried the kludgey fix of copying tools.jar to %ANT_HOME%\lib but that didn't work.) John (September 26th 2004) ---- The command I was using was 'ant doc', within a directory containing a build.xml file. In the original ant.bat, the following statement was being used: "%_JAVACMD%" %ANT_OPTS% -classpath "%ANT_HOME%\lib\ant-launcher.jar" "-Dant.home=%ANT_HOME%" org.apache.tools.ant.launch.Launcher %ANT_ARGS% -lib "%CLASSPATH%" %ANT_CMD_LINE_ARGS% Maybe the setting of classpath by -classpath "%ANT_HOME%\lib\ant-launcher.jar" was the problem. I modified ant.bat to be as simple as possible. This resulted in a statement close to the manual-recommended minimal statement:- java -Dant.home=c:\ant org.apache.tools.ant.launch.Launcher