protected boolean validClassFilePath(String path)
	{
		if(path==null)
		{
			return false;
		}
		File file=new File(path);
		return file.exists()&&file.isFile();
	}
protected boolean validClassFilePath ( String path ) { if ( path == null ) { return false ; } File file = new File ( path ) ; return file . exists ( ) && file . isFile ( ) ; }
验证路径是否正确
@param path
@return