@Override protected String findEclipseOnPlatform(File dir){
  File possible=new File(dir,getWindowsExecutableName());
  return (possible.isFile()) ? dir.getAbsolutePath() : null;
}

@ Override protected String findEclipseOnPlatform ( File dir ) { File possible = new File ( dir , getWindowsExecutableName ( ) ) ; return ( possible . isFile ( ) ) ? dir . getAbsolutePath ( ) : null ; }
checks if the provided directory contains ' eclipse . exe ' , and if so , returns the directory , otherwise null .
