------------------------------- JDK7µÄж«Î÷-Fork/Join | ------------------------------- # ·ÖÖ§ºÏ²¢ * °Ñ´óÈÎÎñ·Ö½âΪN¸öСÈÎÎñ½øÐÐÖ´ÐÐ,×îºóºÏ²¢½á¹û # ²ÉÓù¤×÷ÇÔȡģʽ # ½á¹¹Ìåϵ ForkJoinTask * ½Ó¿Ú |-RecursiveAction * ²»´ø·µ»ØÖµµÄ³éÏóÀà protected abstract void compute(); |-RecursiveTask * ´ø·µ»ØÖµµÄ³éÏóÀà protected abstract V compute();