src/main/java/com/simpligility/maven/plugins/android/DefaultJavaProcessExecutor.java
private static int grabProcessOutput(
            @NonNull final Process process,
            @NonNull final ProcessOutput output ) throws InterruptedException
    {
        Thread threadErr = new Thread( "stderr" )
        {
            @Override
            public void run()
            {
                InputStream stderr = process.getErrorStream();
                OutputStream stream = output.getErrorOutput();
                try
                {
                    ByteStreams.copy( stderr, stream );
                    stream.flush();
                }
                catch ( IOException e )
                {
                    // ignore?
                }
                finally
                {
                    try
                    {
                        Closeables.close( stderr, true /* swallowIOException */ );
                    }
                    catch ( IOException e )
                    {
                        // cannot happen
                    }
                    try
                    {
                        Closeables.close( stream, true /* swallowIOException */ );
                    }
                    catch ( IOException e )
                    {
                        // cannot happen
                    }
                }
            }
        };
        Thread threadOut = new Thread( "stdout" )
        {
            @Override
            public void run()
            {
                InputStream stdout = process.getInputStream();
                OutputStream stream = output.getStandardOutput();
                try
                {
                    ByteStreams.copy( stdout, stream );
                    stream.flush();
                }
                catch ( IOException e )
                {
                    // ignore?
                }
                finally
                {
                    try
                    {
                        Closeables.close( stdout, true /* swallowIOException */ );
                    }
                    catch ( IOException e )
                    {
                        // cannot happen
                    }
                    try
                    {
                        Closeables.close( stream, true /* swallowIOException */ );
                    }
                    catch ( IOException e )
                    {
                        // cannot happen
                    }
                }
            }
        };
        threadErr.start();
        threadOut.start();
        // it looks like on windows process#waitFor() can return
        // before the thread have filled the arrays, so we wait for both threads and the
        // process itself.
        threadErr.join();
        threadOut.join();
        // get the return code from the process
        return process.waitFor();
    }
private static int grabProcessOutput(
            @NonNull final Process process,
            @NonNull final ProcessOutput output ) throws InterruptedException
    {
        Thread threadErr = new Thread( "stderr" )
        {
            @Override
            public void run()
            {
                InputStream stderr = process.getErrorStream();
                OutputStream stream = output.getErrorOutput();
                try
                {
                    ByteStreams.copy( stderr, stream );
                    stream.flush();
                }
                catch ( IOException e )
                {
                    // ignore?
                }
                finally
                {
                    try
                    {
                        Closeables.close( stderr, true /* swallowIOException */ );
                    }
                    catch ( IOException e )
                    {
                        // cannot happen
                    }
                    try
                    {
                        Closeables.close( stream, true /* swallowIOException */ );
                    }
                    catch ( IOException e )
                    {
                        // cannot happen
                    }
                }
            }
        };
        Thread threadOut = new Thread( "stdout" )
        {
            @Override
            public void run()
            {
                InputStream stdout = process.getInputStream();
                OutputStream stream = output.getStandardOutput();
                try
                {
                    ByteStreams.copy( stdout, stream );
                    stream.flush();
                }
                catch ( IOException e )
                {
                    // ignore?
                }
                finally
                {
                    try
                    {
                        Closeables.close( stdout, true /* swallowIOException */ );
                    }
                    catch ( IOException e )
                    {
                        // cannot happen
                    }
                    try
                    {
                        Closeables.close( stream, true /* swallowIOException */ );
                    }
                    catch ( IOException e )
                    {
                        // cannot happen
                    }
                }
            }
        };
        threadErr.start();
        threadOut.start();
        // it looks like on windows process#waitFor() can return
        // before the thread have filled the arrays, so we wait for both threads and the
        // process itself.
        threadErr.join();
        threadOut.join();
        // get the return code from the process
        return process.waitFor();
    }
Get the stderr/stdout outputs of a process and return when the process is done.
Both <b>must</b> be read or the process will block on windows.

@param process The process to get the output from.
@param output The processOutput containing where to send the output.
Note that on Windows capturing the output is not optional. If output is null
the stdout/stderr will be captured and discarded.
@return the process return code.
@throws InterruptedException if {@link Process#waitFor()} was interrupted.