import java.io.*;
import java.util.*;
import java.util.jar.*;
import java.util.regex.*;

try
{
    File jarFile = new File( basedir, "target/jar-1.0-SNAPSHOT-sources.jar" );
    System.out.println( "Checking for existence of " + jarFile );
    if ( !jarFile.isFile() )
    {
        System.out.println( "FAILURE!" );
        return false;
    }

    JarFile jar = new JarFile( jarFile );

    String[] includedEntries = {
        "META-INF/MANIFEST.MF",
        "MyClass.java",
        "main.properties",
    };
    for ( String included : includedEntries )
    {
        System.out.println( "Checking for existence of " + included );
        if ( jar.getEntry( included ) == null )
        {
            System.out.println( "FAILURE!" );
            return false;
        }
    }

    String[] excludedEntries = {
        "MyTest.java",
        "test.properties",
    };
    for ( String excluded : excludedEntries )
    {
        System.out.println( "Checking for absence of " + excluded );
        if ( jar.getEntry( excluded ) != null )
        {
            System.out.println( "FAILURE!" );
            return false;
        }
    }
}
catch( Throwable t )
{
    t.printStackTrace();
    return false;
}

return true;