Mine

// play file    private void jButton_PlayActionPerformed(java.awt.event.ActionEvent evt) {                try {            p = Runtime.getRuntime().exec( "mplayer -slave -quiet /home/mario/willitblend_crop.mpg" );                        BufferedReader in = new BufferedReader(new InputStreamReader( p.getInputStream() ));            PrintStream os = new PrintStream( p.getOutputStream() );        } catch(Exception e) {            System.out.println(e.getMessage());        }            }// pause mplayer    private void jButton_SendCommandActionPerformed(java.awt.event.ActionEvent evt) {        WriteToStdOut("pause");    }    // write to stdout    public void WriteToStdOut(String command) {                try {            OutputStreamWriter out = new OutputStreamWriter(p.getOutputStream());            out.write(command);            out.close();        } catch(Exception e) {            System.out.println(e.getMessage());        }            }