Multi tool use

Javac cannot find SWT library despite correct classpath

I have a Java project that uses SWT and compiles/runs perfectly.

When I try to compile via Ant, however, javac cannot find the SWT library despite the build.xml specifying the correct classpath.

The SWT library is located in C:my_workEclipse3.6-64plugins. As seen below (under the javac tags, this classpath is specified as such.

C:my_workEclipse3.6-64plugins

javac

build.xml

<?xml version="1.0" encoding="UTF-8"?>

<project default="run" name="My Project">
<target name="run" depends="compile">
<java classname="com.company.program.project">
<classpath path="staging" location="C:my_workEclipse3.6-64plugins"/>
</java>
</target>
<target name="compile">
<javac includeantruntime="false" srcdir="./src" destdir="staging">
<classpath path="C:my_workEclipse3.6-64plugins"></classpath>
</javac>
</target>

<jar destfile="./build/jars/swtgui.jar" filesetmanifest="mergewithoutmain">
<manifest>
<attribute name="Main-Class" value="org.swtgui.MainGui" />
<attribute name="Class-Path" value="." />
</manifest>

<fileset dir="./bin/com/company/program/project" includes="**/*.class" />
<fileset dir="C:my_workEclipse3.6-64plugins" includes="org.eclipse.swt.win32.win32.x86_64_3.6.0.v3650b.jar" />

</jar>
<record name="./MyProject.log" loglevel="verbose" action="start"/>


The above gives me errors on import statements such as the following:

error: package org.eclipse.swt does not exist
import org.eclipse.swt.SWT;
^


Why does javac not find the SWT library when the classpath is correctly specified?

Also how can I find out where javac is looking? The logs -- even in verbose mode -- tell me nothing about where javac is trying to find these import statements.

2 Answers
2

it seems <classpath path="C:my_workEclipse3.6-64plugins"></classpath> is not adding dependencies to compile classpath

<classpath path="C:my_workEclipse3.6-64plugins"></classpath>

this way works for me:

<target name="compile">
<javac includeantruntime="false" srcdir="./src" destdir="staging">
<classpath>
<fileset dir="C:my_workEclipse3.6-64plugins">
<!-- <include name="**/*.jar" /> -->
<include name="org.eclipse.swt.*.jar" />
</fileset>
</classpath>
</javac>
</target>


SWT provides a separate Jar for standalone Java applications.

You can download the latest one from here - look at the 'SWT Binary and Source' section near the bottom of the page.

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