RFE: faster javac compilation using invocation instead of running javac.exe

Sun's JDK contains the Java compiler in tools.jar.
Why not use it instead of running javac.exe?
It should also simplify the code for cross platform compatibility...
Regards,
Yaniv Kunda

I meant that JDev would invoke the compiler from the libs of the project JDK.
But this is indeed a sort of a hack because the libs are not documented and are sun-specific (a problem with other JDKs).
Anyway, I was just reading a bit on Java 6 (Mustang) and saw that an API (per JSR-199 : http://jcp.org/en/jsr/detail?id=199) for java compilation is one of its new features!
This feature is documented in http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4164450.
I guess it would be a feature for a newer major release of JDev, but nevertheless important to mention.
Regards,
Yaniv Kunda

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Hi
I encounter an error "Error running C:\jdk1.5.0_06\bin\javac.exe compiler" when building my project using ant1.7.
My project has 10 eclipse plugins, and each plugin is compiled by invoking following ant target

<target name="compilePlugin">
     
     
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</target>
Since each of first 9 plugins contains less than 500 java source files, we always set "param.fork" to false when invoking this ant target.
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Many thanks
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I encountered a very similar error and I was able to resolve it by removing the following parameters from the javac task:
fork="${param.fork}"
memoryInitialSize="256m"
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fork="true"
memoryInitialSize="256m"
memoryMaximumSize="256m" Not sure why this fixed my problem but it did. I was using Ant 1.7 and Java 1.6_07 hope this helps.

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Hi Guys.,
I am really having hard time to get something work right with RSL projects in Flex 3.2 SDK. Here is my weird problem.
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Link Type : External
airglobal.swc
framework.swc
datavisualization.swc
rpc.swc
utilites.swc
applicationupdater.swc
applicationupdater_ui.swc
Link Type: Merged into code
airframework.swc
servicemonitor.swc
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mx/controls/HTML.png
mx/core/Windows.png
library.swf
Note: airframework.swc and servicemonitor.swc has a many png files and properties files in it. But these properties and png files are not included when compiled in Flash builder.
But when the same project is compiled using ANT compc task, i get all the png and properties files from airframework.swc and servicemonitor.swc files into my library project SWC file.
Here is the ANT version which is used to compile the library project
<compc output="${project.output.dir}/${project.name}.swc"
   include-classes="${as} ${mxml}"
   use-network="false"
   directory="false"
   allow-source-path-overlap="true"
   incremental="${build.incremental}"
   debug="${build.debug}"
   locale="${build.locale}"
   optimize="false"
   >
<define name="CONFIG::bindingdebug" value="${build.bindingdebug}" />
<define name="CONFIG::logtoconsole" value="${build.logtoconsole}" />
<define name="CONFIG::frameworkdebug" value="${build.frameworkdebug}" />
<define name="CONFIG::flexspy" value="${build.flexspy}" />
<define name="CONFIG::debug" value="${build.debug}" />
<define name="CONFIG::release" value="${build.release}" />
<keep-as3-metadata name="Metadata" />
<keep-as3-metadata name="DefaultProperty" />
<keep-as3-metadata name="Required" />
<keep-as3-metadata name="Event" />
<keep-as3-metadata name="AssignableTo" />
<keep-as3-metadata name="Inject" />
<keep-as3-metadata name="InjectConstructor" />
<keep-as3-metadata name="Publish" />
<keep-as3-metadata name="Subscribe" />
<keep-as3-metadata name="PublishSubscribe" />
<keep-as3-metadata name="Factory" />
<keep-as3-metadata name="Init" />
<keep-as3-metadata name="Destroy" />
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<keep-as3-metadata name="Autoremove" />
<keep-as3-metadata name="Internal" />
<keep-as3-metadata name="ObjectDefinition" />
<keep-as3-metadata name="DynamicObject" />
<load-config filename="${air.config}"/>
<compiler.include-libraries dir="${flex.frameworks.dir}/libs/air" append="true">
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</compiler.include-libraries>
<external-library-path dir="${build.compc.dir}" append="true">
     <include name="TriGeoFlexFramework/TriGeoFlexFramework.swc" />
     <include name="TriGeoLibrary/TriGeoLibrary.swc" />
     <include name="TriGeoRPCFramework/TriGeoRPCFramework.swc" />
     <include name="Degrafa_Beta3.1_Flex3" />
     <include name="parsley-flex3-2.4.0.swc" />
     <include name="spicelib-flex-2.4.0.swc" />
</external-library-path>
<external-library-path dir="${flex.frameworks.dir}/libs" append="true">
     <include name="framework.swc" />
     <include name="datavisualization.swc" />
     <include name="utilities.swc" />
     <include name="rpc.swc" />
     <include name="air/airglobal.swc" />
     <include name="air/applicationupdater.swc" />
     <include name="air/applicationupdater_ui.swc" />
</external-library-path>
<source-path path-element="${basedir}/src" />
</compc>
</target>
</project>
Any insights is greatly appreciated.!

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#8, Depends on what you're doing. You have to explain it.

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http://209.85.229.132/search?q=cache:JHfrxCo7y0YJ:forge.osor.eu/docman/view.php/143/250/Kettle_Devel_guide_v0.odt+geokettle+spoon+java+api&cd=2&hl=en&ct=clnk&client=firefox-a
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I have successfully compiled files using javac. The path is set, so I just need to open a command prompt and simply type javac AddServerImpl.java and it compiles with out errors. I do not have to specify any path at all.
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Hi ,
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[CharSequenceDemo.java|http://java.sun.com/docs/books/tutorial/java/IandI/examples/CharSequenceDemo.java]
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symbol : class StringBuilder
location: class CharSequenceDemo
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^
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I've been struggling with the same issue. The difference is that my system says I'm using version 1.6.0_05. I've tried running jucheck.exe. It tells me I've got the latest version installed.
Here is the code:
import java.lang.StringBuilder;
import java.util.Formatter;
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location: package lang
import java.lang.StringBuilder;
^
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symbol : class Formatter
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import java.util.Formatter;
^
UsingFormatter.java:14: cannot resolve symbol
symbol : class StringBuilder
location: class UsingFormatter
StringBuilder stringBuilder = new StringBuilder();
^
UsingFormatter.java:14: cannot resolve symbol
symbol : class StringBuilder
location: class UsingFormatter
StringBuilder stringBuilder = new StringBuilder();
^
UsingFormatter.java:15: cannot resolve symbol
symbol : class Formatter
location: class UsingFormatter
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^
UsingFormatter.java:15: cannot resolve symbol
symbol : class Formatter
location: class UsingFormatter
Formatter formatter = new Formatter(stringBuilder);
^
6 errors
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I have spent hours googling for an answer and trying every suggestion. Nothing works, not even the one about dropping the computer from the rooftop.
Ultimately, what I'm trying to accomplish (in a different program) is to use a text file as a form letter template and replace the %s placeholders with stings from my form object.
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Edited by: javastudent_99 on Apr 3, 2008 1:48 PM

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Hi,
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ORABPEL-00016
Javac compiler configuration error.
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and a huge stack trace...
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Thanks,
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Hi Jp,
The error message : Please verify that javac compiler is installed on this machine and is included in the classpath (check that "tools.jar" in particular is in the classpath).
This means that you javac compiler might not be installed or not in the classpath entry. You might want to compile the bpel project using the JDev and then deploy.
Cheers
A

Error- deployments fails-ORABPEL-00016 & 05215-Javac compiler config err

Hi,
We are getting the below error randomly when we try to deploy..
ORABPEL-00016
Javac compiler configuration error.
Failed to execute javac compiler on file(s) "/opt/oracle/soa/bpel/domains/default/tmp/.bpel_XXXXXX_1.0_3c2c050b949f081557b49d81a3e5fe35.tmp/BPEL-INF/src/bpel/XXXXXl/BPEL_BIN.java". Exception reported is:
Please verify that javac compiler is installed on this machine and is included in the classpath (check that "tools.jar" in particular is in the classpath).
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Error while loading process.
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Please verify that javac compiler is installed on this machine and is included in the classpath (check that "tools.jar" in particular is in the classpath).
and a huge stack trace...
Everything in the server.xml seems to be in the path... its getting fixed after a recycle.... we are able to deploy the same BPEL once recycled...
Does any one of you encounter same problem.. Whts the reason why this is occuring?
Thanks,
Jayaprakash

Hi Jp,
The error message : Please verify that javac compiler is installed on this machine and is included in the classpath (check that "tools.jar" in particular is in the classpath).
This means that you javac compiler might not be installed or not in the classpath entry. You might want to compile the bpel project using the JDev and then deploy.
Cheers
A

Compile error : "unable to find javac compiler"

Hello,
I've got this problem compiling my java project: the error that I get is :
Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre1.5.0_05\lib\tools.jar
init:
compile:
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Hello,
I've got this problem compiling my java project: the error that I get is :
Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre1.5.0_05\lib\tools.jar
init:
compile:
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c)     JBuilder 2005: http://www.borland.com/downloads/download_jbuilder.html
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Error "unable to find javac compiler"

Hello,
I've got this problem compiling my java project: the error that I get is :
Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre1.5.0_05\lib\tools.jar
init:
compile:
[javac] Compiling 9 source files to H:\project\class
BUILD FAILED
H:\project\build.xml:8: Unable to find a javac compiler;
com.sun.tools.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK
I'm using the following products:
a) MySQL Database: mysql-4.1.13a-win32.zip (http://dev.mysql.com/get/Downloads/MySQL-4.1/mysql-4.1.13a-win32.zip/from/pick)
b) MySQL JDBC driver: mysql-connector-java-3.1.10.zip (http://dev.mysql.com/downloads/connector/j/3.1.html )
c) JBuilder 2005: http://www.borland.com/downloads/download_jbuilder.html
d) Jakarta Ant: apache-ant-1.6.5-bin.zip (http://ant.apache.org/bindownload.cgi)
In the C:\Program Files\JAVA map are the following maps:
- jdk1.5.0_05
- jre1.5.0_05
the settings in windows:
ANT_HOME C:\java\apache-ant-1.6.5
JAVA_HOME C:\Program Files\Java\jdk1.5.0_05
And I have added ;C:\java\apache-ant-1.6.5\bin; to the PATH
Why doesn't it work ? And more important, How can I fix it ?
Thanks
Nick

Duplicate of http://forum.java.sun.com/thread.jspa?threadID=687035

RFE: faster javac compilation using invocation instead of running javac.exe

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