Java – ant contains external jar

I want to include an external jar. Jar in my java project I'm using ants External Jar is located in the Lib folder My build XML looks like this:

<?xml version="1.0" encoding="UTF-8"?>
<project>
    <path id="classpath">
        <fileset dir="lib" includes="**/*.jar"/>
    </path>

    <target name="clean">
        <delete dir="build"/>
    </target>

    <target name="compile">
        <mkdir dir="build"/>
        <javac srcdir="src" destdir="build" classpathref="classpath" />
    </target>

    <target name="jar">
        <mkdir dir="trash"/>
        <jar destfile="trash/test.jar" basedir="build">
            <zipgroupfileset dir="lib" includes="**/*.jar"/>
            <manifest>
                <attribute name="Main-Class" value="com.Test"/>
            </manifest>
        </jar>
    </target>

    <target name="run">
        <java jar="trash/test.jar" fork="true"/>
    </target>
</project>

But it doesn't work When I want to from the outside When importing something from jar, an error occurs after the command ant compile: package com Something doesn't exist What should I edit to make it work?

Exact error:

Compiling 23 source files to xy/build
  xy/src/com/Test.java:5: package com.thoughtworks.xstream does not exist
  import com.thoughtworks.xstream.*;
  ^
  1 error

Solution

You should try to include no attributes:

<fileset dir="lib" />

In the jar section, you include the following classes:

<zipgroupfileset includes="*.jar" dir="lib"/>