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1.
superÊǵ÷Óø¸ÀàµÄ¹¹Ô캯Êý
2.
thisµ÷ÓõÄͬÀàµÄ¹¹Ô캯Êý.
3.
3.1
synchronized¹Ø¼ü×ÖµÄ×÷ÓÃÓòÓжþÖÖ
3.1.1
ÊÇij¸ö¶ÔÏóʵÀýÄÚ£¬synchronized aMethod(){}¿ÉÒÔ·ÀÖ¹¶à¸öÏß³Ìͬʱ·ÃÎÊÕâ¸ö¶ÔÏóµÄsynchronized·½·¨£¨Èç¹ûÒ»¸ö¶ÔÏóÓжà¸ösynchronized·½·¨£¬Ö»ÒªÒ»¸öÏ̷߳ÃÎÊÁËÆäÖеÄÒ»¸ösynchronized·½·¨£¬ÆäËüÏ̲߳»ÄÜͬʱ·ÃÎÊÕâ¸ö¶ÔÏóÖÐÈκÎÒ»¸ösynchronized·½·¨£©¡£Õâʱ£¬²»Í¬µÄ¶ÔÏóʵÀýµÄsynchronized·½·¨ÊDz»Ïà¸ÉÈŵġ£Ò²¾ÍÊÇ˵£¬ÆäËüÏß³ÌÕÕÑù¿ÉÒÔͬʱ·ÃÎÊÏàͬÀàµÄÁíÒ»¸ö¶ÔÏóʵÀýÖеÄsynchronized·½·¨£»
3.1.2
ÊÇij¸öÀàµÄ·¶Î§£¬synchronized static aStaticMethod{}·ÀÖ¹¶à¸öÏß³Ìͬʱ·ÃÎÊÕâ¸öÀàÖеÄsynchronized static ·½·¨¡£Ëü¿ÉÒÔ¶ÔÀàµÄËùÓжÔÏóʵÀýÆð×÷Óá£
3.2
³ýÁË·½·¨Ç°ÓÃsynchronized¹Ø¼ü×Ö£¬synchronized¹Ø¼ü×Ö»¹¿ÉÒÔÓÃÓÚ·½·¨ÖеÄij¸öÇø¿éÖУ¬±íʾֻ¶ÔÕâ¸öÇø¿éµÄ×ÊԴʵÐл¥³â·ÃÎÊ¡£Ó÷¨ÊÇ: synchronized(this){/*Çø¿é*/}£¬ËüµÄ×÷ÓÃÓòÊǵ±Ç°¶ÔÏó£»
3.3
synchronized¹Ø¼ü×ÖÊDz»Äܼ̳еģ¬Ò²¾ÍÊÇ˵£¬»ùÀàµÄ·½·¨synchronized f(){} Ôڼ̳ÐÀàÖв¢²»×Ô¶¯ÊÇsynchronized f(){}£¬¶øÊDZä³ÉÁËf(){}¡£¼Ì³ÐÀàÐèÒªÄãÏÔʽµÄÖ¸¶¨ËüµÄij¸ö·½·¨Îªsynchronized·½·¨£»


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