public void init(){
  m_csv=new File(m_filename);
  try {
    m_csv.createNewFile();
    m_fw=new FileWriter(m_csv);
  }
 catch (  IOException e) {
    e.printStackTrace();
    return;
  }
}

public void init ( ) { m_csv = new File ( m_filename ) ; try { m_csv . createNewFile ( ) ; m_fw = new FileWriter ( m_csv ) ; } catch ( IOException e ) { e . printStackTrace ( ) ; return ; } }
run to create file to write to .
