broken assembly xml using excludes

<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
    <id>jar-with-dependencies</id>
    <formats>
        <format>jar</format>
    </formats>
    <includeBaseDirectory>false</includeBaseDirectory>
    <dependencySets>
        <dependencySet>
            <outputDirectory>/</outputDirectory>
            <useProjectArtifact>true</useProjectArtifact>
            <unpack>true</unpack>
            <scope>runtime</scope>
            <useDefaultExcludes>true</useDefaultExcludes>
            <!--<useTransitiveFiltering>true</useTransitiveFiltering>-->
            <!--<useStrictFiltering>true</useStrictFiltering>-->
            <excludes>
                <exclude>META-INF</exclude>
                <exclude>**/*.java</exclude>
                <exclude>*.java</exclude>
                <exclude>*:sources</exclude>
            </excludes>
        </dependencySet>
    </dependencySets>
</assembly>