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IXHONG：
registerBeanPostProcessors(bean ...
AbstractApplicationContext的refresh()方法简要说明 -
java_frog：
可以读汉字，但一行还是分开了。
FileChannel 读取中文文件解决乱码的一种方法 -
shenselongge：
<div class="quote_title ...
FileChannel 读取中文文件解决乱码的一种方法 -
string2020：
refresh到底是干啥的。@SpringBootApplic ...
AbstractApplicationContext的refresh()方法简要说明 -
dongpy1111：
最近使用String.format比较多。不晓得这个效率怎样。 ...
String vs StringBuffer vs StringBuilder
volatile语义：告诉处理器，不要到工作内存中找我，而是直接到主存中操作我，多线程或者多核环境下，变量共享使用volatile要注意，他只能保证可见性，但不能保证原子性；
如i++之类的操作，他分为read i的值，之后执行i+1
当出现并发情况时，1线程read i的值，而2线程修改了i的值，这个时候1线程如果再将值刷到主存的话就会造成覆盖。可以通过synchronized在同步代码段，保证原子性或者使用jdk1.5的原子包
参考：
java中volatile关键字的含义
参考中的例子说服力不是很够，这里重写了参考的例子，使得其更有说服力。
public class Counter {
public volatile static int count = 0;
public static void inc(){
try {
Thread.sleep(1);
} catch (InterruptedException e) {
//TODO
}
count++;
}
public static void main(String[] args){
for(int i=0;i<1000;i++){
new Thread(new Runnable() {
@Override
public void run() {
Counter.inc();
System.out.println(Thread.currentThread().getName());
}
}).start();
}
try {
Thread.currentThread().sleep(10000);
} catch (InterruptedException e) {
//TODO
}
System.out.println("运行结果:Counter.count=" + Counter.count);
System.out.println(Thread.currentThread().getName());
}
}
输出结果如下：
Thread-14 Thread-10 Thread-5 Thread-1 Thread-9 Thread-17 Thread-2 Thread-11 Thread-4 Thread-6 Thread-12 Thread-25 Thread-29 Thread-22 Thread-7 Thread-23 Thread-15 Thread-37 Thread-36 Thread-8 Thread-3 Thread-13 Thread-33 Thread-41 Thread-32 Thread-28 Thread-42 Thread-26 Thread-18 Thread-21 Thread-45 Thread-19 Thread-53 Thread-27 Thread-46 Thread-50 Thread-0 Thread-31 Thread-69 Thread-57 Thread-58 Thread-49 Thread-40 Thread-24 Thread-20 Thread-16 Thread-38 Thread-34 Thread-30 Thread-91 Thread-76 Thread-90 Thread-88 Thread-92 Thread-61 Thread-79 Thread-86 Thread-52 Thread-94 Thread-93 Thread-72 Thread-64 Thread-89 Thread-85 Thread-60 Thread-66 Thread-44 Thread-82 Thread-67 Thread-68 Thread-63 Thread-73 Thread-55 Thread-70 Thread-80 Thread-97 Thread-35 Thread-71 Thread-47 Thread-74 Thread-39 Thread-75 Thread-78 Thread-77 Thread-83 Thread-62 Thread-104 Thread-95 Thread-87 Thread-81 Thread-48 Thread-56 Thread-112 Thread-43 Thread-65 Thread-54 Thread-100 Thread-84 Thread-98 Thread-51 Thread-59 Thread-101 Thread-129 Thread-133 Thread-140 Thread-136 Thread-138 Thread-130 Thread-134 Thread-131 Thread-125 Thread-122 Thread-103 Thread-114 Thread-110 Thread-102 Thread-113 Thread-99 Thread-108 Thread-145 Thread-119 Thread-96 Thread-116 Thread-120 Thread-144 Thread-142 Thread-105 Thread-109 Thread-118 Thread-106 Thread-124 Thread-128 Thread-132 Thread-115 Thread-117 Thread-121 Thread-127 Thread-107 Thread-126 Thread-111 Thread-135 Thread-123 Thread-141 Thread-160 Thread-166 Thread-137 Thread-155 Thread-161 Thread-147 Thread-156 Thread-164 Thread-165 Thread-157 Thread-151 Thread-148 Thread-152 Thread-167 Thread-158 Thread-169 Thread-173 Thread-150 Thread-146 Thread-154 Thread-153 Thread-149 Thread-174 Thread-139 Thread-143 Thread-172 Thread-170 Thread-163 Thread-177 Thread-181 Thread-185 Thread-182 Thread-159 Thread-186 Thread-162 Thread-175 Thread-168 Thread-171 Thread-179 Thread-176 Thread-189 Thread-188 Thread-190 Thread-184 Thread-180 Thread-194 Thread-178 Thread-193 Thread-183 Thread-187 Thread-192 Thread-197 Thread-196 Thread-198 Thread-191 Thread-200 Thread-195 Thread-199 Thread-206 Thread-201 Thread-209 Thread-203 Thread-204 Thread-208 Thread-207 Thread-205 Thread-202 Thread-210 Thread-216 Thread-215 Thread-220 Thread-212 Thread-214 Thread-219 Thread-217 Thread-213 Thread-211 Thread-225 Thread-222 Thread-218 Thread-223 Thread-221 Thread-229 Thread-227 Thread-224 Thread-230 Thread-226 Thread-231 Thread-228 Thread-241 Thread-233 Thread-237 Thread-238 Thread-236 Thread-234 Thread-240 Thread-232 Thread-235 Thread-252 Thread-245 Thread-244 Thread-242 Thread-243 Thread-249 Thread-250 Thread-246 Thread-248 Thread-247 Thread-239 Thread-251 Thread-256 Thread-254 Thread-258 Thread-255 Thread-257 Thread-253 Thread-264 Thread-259 Thread-268 Thread-260 Thread-270 Thread-266 Thread-262 Thread-265 Thread-261 Thread-277 Thread-273 Thread-269 Thread-275 Thread-267 Thread-281 Thread-282 Thread-285 Thread-286 Thread-272 Thread-295 Thread-314 Thread-299 Thread-310 Thread-303 Thread-307 Thread-312 Thread-308 Thread-287 Thread-309 Thread-301 Thread-302 Thread-297 Thread-296 Thread-306 Thread-288 Thread-274 Thread-300 Thread-292 Thread-271 Thread-284 Thread-304 Thread-280 Thread-263 Thread-276 Thread-289 Thread-278 Thread-290 Thread-294 Thread-298 Thread-279 Thread-315 Thread-311 Thread-316 Thread-293 Thread-283 Thread-318 Thread-291 Thread-305 Thread-317 Thread-313 Thread-325 Thread-321 Thread-319 Thread-326 Thread-323 Thread-322 Thread-327 Thread-329 Thread-333 Thread-337 Thread-331 Thread-320 Thread-324 Thread-339 Thread-338 Thread-328 Thread-343 Thread-330 Thread-332 Thread-334 Thread-342 Thread-346 Thread-335 Thread-345 Thread-349 Thread-341 Thread-350 Thread-347 Thread-351 Thread-354 Thread-348 Thread-344 Thread-336 Thread-352 Thread-362 Thread-355 Thread-363 Thread-340 Thread-356 Thread-353 Thread-359 Thread-358 Thread-357 Thread-367 Thread-366 Thread-368 Thread-364 Thread-360 Thread-372 Thread-371 Thread-381 Thread-385 Thread-377 Thread-384 Thread-380 Thread-374 Thread-370 Thread-382 Thread-378 Thread-375 Thread-388 Thread-386 Thread-379 Thread-376 Thread-390 Thread-361 Thread-365 Thread-373 Thread-392 Thread-391 Thread-387 Thread-383 Thread-369 Thread-396 Thread-395 Thread-393 Thread-394 Thread-389 Thread-398 Thread-400 Thread-399 Thread-402 Thread-406 Thread-410 Thread-409 Thread-405 Thread-408 Thread-401 Thread-404 Thread-407 Thread-414 Thread-403 Thread-420 Thread-416 Thread-412 Thread-427 Thread-443 Thread-439 Thread-426 Thread-432 Thread-442 Thread-450 Thread-424 Thread-428 Thread-451 Thread-397 Thread-455 Thread-454 Thread-413 Thread-417 Thread-452 Thread-448 Thread-436 Thread-446 Thread-433 Thread-437 Thread-456 Thread-447 Thread-438 Thread-434 Thread-430 Thread-444 Thread-440 Thread-422 Thread-423 Thread-435 Thread-449 Thread-466 Thread-431 Thread-457 Thread-415 Thread-411 Thread-419 Thread-418 Thread-429 Thread-469 Thread-477 Thread-479 Thread-445 Thread-470 Thread-453 Thread-462 Thread-478 Thread-476 Thread-459 Thread-441 Thread-458 Thread-464 Thread-463 Thread-425 Thread-482 Thread-481 Thread-490 Thread-475 Thread-483 Thread-474 Thread-486 Thread-421 Thread-473 Thread-472 Thread-471 Thread-468 Thread-467 Thread-501 Thread-506 Thread-500 Thread-496 Thread-488 Thread-504 Thread-485 Thread-460 Thread-497 Thread-492 Thread-493 Thread-491 Thread-502 Thread-498 Thread-507 Thread-513 Thread-487 Thread-494 Thread-484 Thread-489 Thread-480 Thread-465 Thread-511 Thread-461 Thread-508 Thread-518 Thread-517 Thread-520 Thread-512 Thread-516 Thread-509 Thread-514 Thread-510 Thread-503 Thread-499 Thread-505 Thread-495 Thread-515 Thread-522 Thread-519 Thread-521 Thread-523 Thread-532 Thread-525 Thread-528 Thread-535 Thread-526 Thread-530 Thread-527 Thread-534 Thread-533 Thread-531 Thread-540 Thread-529 Thread-536 Thread-537 Thread-524 Thread-546 Thread-538 Thread-544 Thread-542 Thread-541 Thread-539 Thread-543 Thread-550 Thread-554 Thread-549 Thread-551 Thread-557 Thread-555 Thread-560 Thread-552 Thread-553 Thread-547 Thread-545 Thread-548 Thread-559 Thread-556 Thread-558 Thread-561 Thread-562 Thread-565 Thread-564 Thread-569 Thread-563 Thread-570 Thread-568 Thread-566 Thread-577 Thread-579 Thread-572 Thread-567 Thread-571 Thread-573 Thread-578 Thread-576 Thread-574 Thread-590 Thread-585 Thread-584 Thread-582 Thread-581 Thread-580 Thread-586 Thread-583 Thread-588 Thread-575 Thread-594 Thread-593 Thread-597 Thread-589 Thread-598 Thread-592 Thread-591 Thread-587 Thread-599 Thread-603 Thread-602 Thread-606 Thread-607 Thread-600 Thread-604 Thread-605 Thread-596 Thread-601 Thread-595 Thread-616 Thread-608 Thread-613 Thread-610 Thread-609 Thread-612 Thread-614 Thread-611 Thread-617 Thread-624 Thread-626 Thread-620 Thread-625 Thread-618 Thread-621 Thread-622 Thread-615 Thread-628 Thread-629 Thread-619 Thread-623 Thread-627 Thread-638 Thread-631 Thread-635 Thread-630 Thread-634 Thread-632 Thread-640 Thread-643 Thread-647 Thread-636 Thread-639 Thread-642 Thread-651 Thread-652 Thread-644 Thread-648 Thread-650 Thread-646 Thread-633 Thread-637 Thread-649 Thread-660 Thread-658 Thread-662 Thread-655 Thread-657 Thread-645 Thread-641 Thread-661 Thread-653 Thread-654 Thread-656 Thread-669 Thread-670 Thread-666 Thread-668 Thread-665 Thread-672 Thread-664 Thread-674 Thread-678 Thread-673 Thread-676 Thread-663 Thread-667 Thread-677 Thread-671 Thread-659 Thread-682 Thread-679 Thread-684 Thread-685 Thread-680 Thread-681 Thread-675 Thread-686 Thread-683 Thread-687 Thread-688 Thread-691 Thread-689 Thread-700 Thread-692 Thread-702 Thread-695 Thread-690 Thread-694 Thread-701 Thread-698 Thread-699 Thread-697 Thread-693 Thread-696 Thread-708 Thread-709 Thread-710 Thread-706 Thread-704 Thread-705 Thread-707 Thread-703 Thread-712 Thread-718 Thread-722 Thread-714 Thread-713 Thread-711 Thread-716 Thread-715 Thread-717 Thread-720 Thread-721 Thread-730 Thread-726 Thread-719 Thread-728 Thread-723 Thread-731 Thread-727 Thread-725 Thread-737 Thread-729 Thread-733 Thread-734 Thread-724 Thread-732 Thread-736 Thread-738 Thread-735 Thread-741 Thread-745 Thread-749 Thread-753 Thread-761 Thread-758 Thread-742 Thread-754 Thread-765 Thread-762 Thread-746 Thread-773 Thread-769 Thread-766 Thread-770 Thread-740 Thread-739 Thread-743 Thread-747 Thread-777 Thread-750 Thread-755 Thread-763 Thread-744 Thread-748 Thread-774 Thread-757 Thread-782 Thread-789 Thread-751 Thread-790 Thread-786 Thread-785 Thread-767 Thread-794 Thread-781 Thread-778 Thread-756 Thread-764 Thread-791 Thread-795 Thread-798 Thread-793 Thread-775 Thread-760 Thread-752 Thread-768 Thread-779 Thread-802 Thread-783 Thread-814 Thread-817 Thread-813 Thread-807 Thread-772 Thread-787 Thread-800 Thread-788 Thread-759 Thread-816 Thread-784 Thread-792 Thread-796 Thread-819 Thread-818 Thread-771 Thread-801 Thread-804 Thread-812 Thread-806 Thread-820 Thread-808 Thread-810 Thread-776 Thread-780 Thread-826 Thread-821 Thread-805 Thread-809 Thread-827 Thread-825 Thread-797 Thread-828 Thread-832 Thread-834 Thread-830 Thread-838 Thread-841 Thread-845 Thread-849 Thread-842 Thread-853 Thread-846 Thread-850 Thread-854 Thread-852 Thread-857 Thread-861 Thread-865 Thread-862 Thread-815 Thread-866 Thread-811 Thread-803 Thread-822 Thread-799 Thread-856 Thread-848 Thread-844 Thread-870 Thread-864 Thread-874 Thread-831 Thread-835 Thread-863 Thread-867 Thread-871 Thread-868 Thread-887 Thread-891 Thread-840 Thread-875 Thread-883 Thread-895 Thread-837 Thread-880 Thread-836 Thread-824 Thread-829 Thread-890 Thread-869 Thread-906 Thread-910 Thread-833 Thread-873 Thread-823 Thread-860 Thread-872 Thread-877 Thread-904 Thread-899 Thread-876 Thread-908 Thread-897 Thread-905 Thread-843 Thread-885 Thread-847 Thread-859 Thread-901 Thread-881 Thread-839 Thread-894 Thread-879 Thread-888 Thread-878 Thread-912 Thread-886 Thread-882 Thread-851 Thread-914 Thread-903 Thread-900 Thread-896 Thread-892 Thread-924 Thread-909 Thread-884 Thread-922 Thread-925 Thread-902 Thread-898 Thread-916 Thread-920 Thread-911 Thread-915 Thread-928 Thread-926 Thread-927 Thread-923 Thread-931 Thread-932 Thread-913 Thread-936 Thread-855 Thread-907 Thread-934 Thread-950 Thread-946 Thread-942 Thread-938 Thread-951 Thread-944 Thread-940 Thread-952 Thread-937 Thread-941 Thread-943 Thread-935 Thread-948 Thread-939 Thread-947 Thread-930 Thread-919 Thread-921 Thread-917 Thread-893 Thread-918 Thread-889 Thread-858 Thread-953 Thread-954 Thread-945 Thread-933 Thread-929 Thread-949 Thread-958 Thread-962 Thread-964 Thread-961 Thread-959 Thread-960 Thread-957 Thread-956 Thread-955 Thread-963 Thread-972 Thread-965 Thread-969 Thread-973 Thread-967 Thread-970 Thread-966 Thread-968 Thread-971 Thread-974 Thread-975 Thread-982 Thread-976 Thread-984 Thread-980 Thread-979 Thread-983 Thread-977 Thread-978 Thread-981 Thread-991 Thread-992 Thread-993 Thread-988 Thread-989 Thread-994 Thread-987 Thread-985 Thread-986 Thread-990 Thread-998 Thread-996 Thread-995 Thread-997 Thread-999 运行结果:Counter.count=993 main
如果加了public class Counter {
public volatile static int count = 0;
public synchronized static void inc(){
try {
Thread.sleep(1);
} catch (InterruptedException e) {
//TODO
}
count++;
}
public static void main(String[] args){
for(int i=0;i<1000;i++){
new Thread(new Runnable() {
@Override
public void run() {
Counter.inc();
System.out.println(Thread.currentThread().getName());
}
}).start();
}
try {
Thread.currentThread().sleep(10000);
} catch (InterruptedException e) {
//TODO
}
System.out.println("运行结果:Counter.count=" + Counter.count);
System.out.println(Thread.currentThread().getName());
}
}
如果加了synchronized关键字后
public class Counter {
public volatile static int count = 0;
public synchronized static void inc(){
try {
Thread.sleep(1);
} catch (InterruptedException e) {
//TODO
}
count++;
}
public static void main(String[] args){
for(int i=0;i<1000;i++){
new Thread(new Runnable() {
@Override
public void run() {
Counter.inc();
System.out.println(Thread.currentThread().getName());
}
}).start();
}
try {
Thread.currentThread().sleep(10000);
} catch (InterruptedException e) {
//TODO
}
System.out.println("运行结果:Counter.count=" + Counter.count);
System.out.println(Thread.currentThread().getName());
}
}
输出结果为：
Thread-0 Thread-5 Thread-4 Thread-3 Thread-2 Thread-1 Thread-59 Thread-58 Thread-52 Thread-98 Thread-54 Thread-56 Thread-140 Thread-55 Thread-51 Thread-47 Thread-43 Thread-39 Thread-35 Thread-50 Thread-234 Thread-48 Thread-46 Thread-275 Thread-42 Thread-38 Thread-44 Thread-342 Thread-40 Thread-36 Thread-45 Thread-41 Thread-420 Thread-37 Thread-452 Thread-33 Thread-34 Thread-32 Thread-31 Thread-30 Thread-29 Thread-28 Thread-571 Thread-27 Thread-26 Thread-25 Thread-24 Thread-23 Thread-658 Thread-22 Thread-677 Thread-21 Thread-20 Thread-684 Thread-19 Thread-17 Thread-18 Thread-16 Thread-15 Thread-14 Thread-13 Thread-782 Thread-12 Thread-11 Thread-10 Thread-9 Thread-8 Thread-7 Thread-6 Thread-895 Thread-893 Thread-892 Thread-891 Thread-890 Thread-974 Thread-889 Thread-888 Thread-887 Thread-886 Thread-885 Thread-884 Thread-883 Thread-882 Thread-881 Thread-880 Thread-879 Thread-878 Thread-877 Thread-876 Thread-875 Thread-874 Thread-873 Thread-872 Thread-871 Thread-870 Thread-869 Thread-868 Thread-867 Thread-866 Thread-865 Thread-864 Thread-863 Thread-862 Thread-861 Thread-860 Thread-859 Thread-858 Thread-857 Thread-856 Thread-855 Thread-854 Thread-853 Thread-852 Thread-851 Thread-850 Thread-849 Thread-848 Thread-847 Thread-846 Thread-845 Thread-844 Thread-843 Thread-842 Thread-841 Thread-840 Thread-839 Thread-838 Thread-837 Thread-836 Thread-835 Thread-834 Thread-833 Thread-832 Thread-831 Thread-830 Thread-829 Thread-828 Thread-827 Thread-826 Thread-825 Thread-824 Thread-823 Thread-822 Thread-821 Thread-820 Thread-819 Thread-818 Thread-817 Thread-816 Thread-815 Thread-814 Thread-813 Thread-812 Thread-811 Thread-810 Thread-809 Thread-808 Thread-807 Thread-806 Thread-805 Thread-804 Thread-803 Thread-802 Thread-801 Thread-800 Thread-799 Thread-798 Thread-797 Thread-796 Thread-795 Thread-794 Thread-793 Thread-792 Thread-791 Thread-790 Thread-789 Thread-788 Thread-787 Thread-786 Thread-785 Thread-784 Thread-783 Thread-781 Thread-780 Thread-779 Thread-778 Thread-777 Thread-776 Thread-775 Thread-774 Thread-773 Thread-772 Thread-771 Thread-770 Thread-769 Thread-768 Thread-767 Thread-766 Thread-765 Thread-763 Thread-764 Thread-762 Thread-761 Thread-760 Thread-759 Thread-758 Thread-757 Thread-756 Thread-755 Thread-754 Thread-753 Thread-752 Thread-751 Thread-750 Thread-749 Thread-748 Thread-747 Thread-746 Thread-745 Thread-744 Thread-743 Thread-742 Thread-741 Thread-740 Thread-739 Thread-738 Thread-737 Thread-736 Thread-735 Thread-734 Thread-733 Thread-732 Thread-731 Thread-730 Thread-729 Thread-727 Thread-728 Thread-726 Thread-725 Thread-724 Thread-723 Thread-719 Thread-722 Thread-721 Thread-720 Thread-717 Thread-718 Thread-716 Thread-715 Thread-714 Thread-713 Thread-712 Thread-711 Thread-710 Thread-709 Thread-708 Thread-707 Thread-706 Thread-705 Thread-704 Thread-703 Thread-702 Thread-701 Thread-700 Thread-699 Thread-698 Thread-697 Thread-696 Thread-695 Thread-694 Thread-693 Thread-692 Thread-691 Thread-690 Thread-689 Thread-688 Thread-687 Thread-686 Thread-685 Thread-683 Thread-682 Thread-681 Thread-680 Thread-679 Thread-675 Thread-678 Thread-676 Thread-674 Thread-673 Thread-672 Thread-671 Thread-670 Thread-666 Thread-668 Thread-669 Thread-667 Thread-665 Thread-664 Thread-663 Thread-659 Thread-655 Thread-662 Thread-661 Thread-660 Thread-657 Thread-653 Thread-656 Thread-651 Thread-654 Thread-652 Thread-650 Thread-649 Thread-648 Thread-645 Thread-646 Thread-647 Thread-644 Thread-643 Thread-641 Thread-642 Thread-640 Thread-639 Thread-638 Thread-637 Thread-636 Thread-635 Thread-634 Thread-633 Thread-632 Thread-631 Thread-630 Thread-629 Thread-628 Thread-627 Thread-626 Thread-625 Thread-624 Thread-623 Thread-622 Thread-621 Thread-620 Thread-619 Thread-618 Thread-617 Thread-616 Thread-615 Thread-614 Thread-613 Thread-612 Thread-611 Thread-610 Thread-609 Thread-608 Thread-607 Thread-606 Thread-605 Thread-604 Thread-603 Thread-602 Thread-601 Thread-600 Thread-599 Thread-598 Thread-597 Thread-596 Thread-595 Thread-594 Thread-593 Thread-592 Thread-591 Thread-590 Thread-589 Thread-588 Thread-587 Thread-586 Thread-585 Thread-584 Thread-583 Thread-582 Thread-581 Thread-580 Thread-579 Thread-578 Thread-577 Thread-576 Thread-575 Thread-574 Thread-573 Thread-572 Thread-570 Thread-569 Thread-568 Thread-567 Thread-566 Thread-565 Thread-564 Thread-563 Thread-562 Thread-561 Thread-560 Thread-559 Thread-558 Thread-557 Thread-556 Thread-555 Thread-554 Thread-553 Thread-552 Thread-551 Thread-550 Thread-549 Thread-548 Thread-547 Thread-546 Thread-545 Thread-544 Thread-543 Thread-542 Thread-541 Thread-540 Thread-539 Thread-538 Thread-537 Thread-536 Thread-535 Thread-534 Thread-533 Thread-532 Thread-531 Thread-530 Thread-529 Thread-528 Thread-527 Thread-526 Thread-524 Thread-525 Thread-523 Thread-522 Thread-521 Thread-520 Thread-519 Thread-518 Thread-517 Thread-516 Thread-515 Thread-514 Thread-513 Thread-512 Thread-511 Thread-510 Thread-509 Thread-508 Thread-507 Thread-506 Thread-505 Thread-504 Thread-503 Thread-502 Thread-501 Thread-500 Thread-499 Thread-498 Thread-497 Thread-496 Thread-495 Thread-494 Thread-493 Thread-492 Thread-491 Thread-490 Thread-487 Thread-489 Thread-488 Thread-486 Thread-485 Thread-484 Thread-483 Thread-482 Thread-481 Thread-480 Thread-479 Thread-478 Thread-477 Thread-476 Thread-475 Thread-474 Thread-473 Thread-472 Thread-471 Thread-470 Thread-469 Thread-468 Thread-467 Thread-466 Thread-465 Thread-464 Thread-463 Thread-462 Thread-461 Thread-460 Thread-459 Thread-458 Thread-457 Thread-456 Thread-455 Thread-454 Thread-453 Thread-451 Thread-450 Thread-449 Thread-448 Thread-447 Thread-446 Thread-445 Thread-444 Thread-443 Thread-442 Thread-441 Thread-440 Thread-439 Thread-438 Thread-437 Thread-436 Thread-435 Thread-434 Thread-433 Thread-432 Thread-431 Thread-430 Thread-429 Thread-428 Thread-427 Thread-426 Thread-425 Thread-424 Thread-423 Thread-421 Thread-422 Thread-419 Thread-418 Thread-417 Thread-416 Thread-415 Thread-414 Thread-413 Thread-412 Thread-411 Thread-410 Thread-408 Thread-409 Thread-407 Thread-406 Thread-405 Thread-404 Thread-403 Thread-402 Thread-401 Thread-400 Thread-399 Thread-398 Thread-397 Thread-396 Thread-395 Thread-394 Thread-393 Thread-392 Thread-391 Thread-390 Thread-389 Thread-388 Thread-387 Thread-386 Thread-385 Thread-384 Thread-383 Thread-382 Thread-381 Thread-380 Thread-379 Thread-378 Thread-377 Thread-376 Thread-375 Thread-374 Thread-373 Thread-372 Thread-371 Thread-370 Thread-369 Thread-368 Thread-367 Thread-366 Thread-365 Thread-364 Thread-363 Thread-362 Thread-361 Thread-360 Thread-359 Thread-358 Thread-357 Thread-356 Thread-355 Thread-354 Thread-353 Thread-352 Thread-351 Thread-350 Thread-349 Thread-348 Thread-347 Thread-346 Thread-345 Thread-344 Thread-343 Thread-341 Thread-340 Thread-339 Thread-338 Thread-337 Thread-336 Thread-335 Thread-334 Thread-333 Thread-332 Thread-331 Thread-330 Thread-329 Thread-328 Thread-327 Thread-326 Thread-325 Thread-324 Thread-323 Thread-322 Thread-321 Thread-320 Thread-319 Thread-318 Thread-317 Thread-316 Thread-315 Thread-314 Thread-313 Thread-312 Thread-311 Thread-310 Thread-309 Thread-308 Thread-307 Thread-306 Thread-305 Thread-304 Thread-303 Thread-302 Thread-301 Thread-300 Thread-299 Thread-298 Thread-297 Thread-296 Thread-295 Thread-294 Thread-293 Thread-292 Thread-291 Thread-290 Thread-289 Thread-288 Thread-287 Thread-286 Thread-285 Thread-284 Thread-283 Thread-282 Thread-281 Thread-280 Thread-279 Thread-278 Thread-277 Thread-276 Thread-274 Thread-273 Thread-272 Thread-271 Thread-270 Thread-269 Thread-268 Thread-267 Thread-266 Thread-265 Thread-264 Thread-263 Thread-262 Thread-261 Thread-260 Thread-259 Thread-258 Thread-257 Thread-256 Thread-255 Thread-254 Thread-253 Thread-252 Thread-251 Thread-250 Thread-249 Thread-248 Thread-247 Thread-246 Thread-245 Thread-244 Thread-243 Thread-242 Thread-241 Thread-240 Thread-239 Thread-238 Thread-237 Thread-236 Thread-235 Thread-233 Thread-232 Thread-231 Thread-230 Thread-229 Thread-228 Thread-227 Thread-226 Thread-225 Thread-224 Thread-223 Thread-222 Thread-221 Thread-220 Thread-219 Thread-218 Thread-217 Thread-216 Thread-213 Thread-215 Thread-214 Thread-211 Thread-212 Thread-209 Thread-210 Thread-208 Thread-205 Thread-206 Thread-207 Thread-204 Thread-201 Thread-203 Thread-202 Thread-197 Thread-200 Thread-199 Thread-198 Thread-195 Thread-196 Thread-193 Thread-194 Thread-192 Thread-191 Thread-190 Thread-189 Thread-188 Thread-187 Thread-186 Thread-185 Thread-184 Thread-183 Thread-182 Thread-181 Thread-180 Thread-179 Thread-178 Thread-177 Thread-176 Thread-175 Thread-174 Thread-173 Thread-171 Thread-172 Thread-170 Thread-169 Thread-168 Thread-167 Thread-166 Thread-165 Thread-164 Thread-163 Thread-162 Thread-161 Thread-160 Thread-159 Thread-158 Thread-157 Thread-156 Thread-155 Thread-154 Thread-153 Thread-152 Thread-151 Thread-150 Thread-149 Thread-148 Thread-147 Thread-146 Thread-145 Thread-144 Thread-143 Thread-142 Thread-141 Thread-139 Thread-138 Thread-137 Thread-136 Thread-135 Thread-134 Thread-133 Thread-132 Thread-131 Thread-130 Thread-129 Thread-128 Thread-127 Thread-126 Thread-125 Thread-124 Thread-123 Thread-122 Thread-121 Thread-120 Thread-119 Thread-118 Thread-117 Thread-116 Thread-115 Thread-114 Thread-113 Thread-112 Thread-111 Thread-110 Thread-109 Thread-108 Thread-107 Thread-106 Thread-104 Thread-105 Thread-103 Thread-102 Thread-101 Thread-100 Thread-99 Thread-97 Thread-96 Thread-95 Thread-94 Thread-93 Thread-92 Thread-91 Thread-90 Thread-89 Thread-88 Thread-87 Thread-86 Thread-85 Thread-84 Thread-83 Thread-82 Thread-81 Thread-80 Thread-79 Thread-78 Thread-77 Thread-75 Thread-76 Thread-74 Thread-73 Thread-72 Thread-71 Thread-70 Thread-69 Thread-68 Thread-66 Thread-67 Thread-65 Thread-61 Thread-57 Thread-53 Thread-64 Thread-63 Thread-49 Thread-62 Thread-60 Thread-999 Thread-998 Thread-997 Thread-996 Thread-995 Thread-994 Thread-993 Thread-992 Thread-991 Thread-990 Thread-989 Thread-988 Thread-987 Thread-986 Thread-985 Thread-984 Thread-983 Thread-982 Thread-981 Thread-980 Thread-979 Thread-978 Thread-977 Thread-976 Thread-975 Thread-973 Thread-972 Thread-971 Thread-970 Thread-969 Thread-968 Thread-967 Thread-966 Thread-965 Thread-964 Thread-963 Thread-962 Thread-961 Thread-960 Thread-959 Thread-958 Thread-957 Thread-956 Thread-955 Thread-954 Thread-953 Thread-952 Thread-951 Thread-950 Thread-949 Thread-948 Thread-947 Thread-946 Thread-945 Thread-944 Thread-943 Thread-942 Thread-941 Thread-940 Thread-939 Thread-938 Thread-937 Thread-936 Thread-935 Thread-934 Thread-933 Thread-932 Thread-931 Thread-930 Thread-929 Thread-928 Thread-927 Thread-926 Thread-925 Thread-924 Thread-923 Thread-922 Thread-921 Thread-920 Thread-919 Thread-918 Thread-917 Thread-916 Thread-915 Thread-914 Thread-913 Thread-912 Thread-911 Thread-910 Thread-909 Thread-908 Thread-907 Thread-906 Thread-905 Thread-904 Thread-903 Thread-902 Thread-901 Thread-900 Thread-899 Thread-898 Thread-897 Thread-896 Thread-894 运行结果:Counter.count=1000 main
结果和预期的一样，说明volatile不能达到原子操作。
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