2
即時通訊使用的BufferedReader讀取由線CSV文件行的內容：使用緩衝區的ReadLine（）？
for (int i=0; ((line=br.readLine())!=null) ; i++) {
String[] split = line.split(",");
ts[i]=Double.parseDouble(split[0]);
amp[i]=Double.parseDouble(split[1]);
}
這個循環運行約150K的迭代中，TS和放大器陣列是預先分配的，並採取不是很多更多的則1MB各的，可是我很得到out of memory exception。一開始我以爲是數組太大了，但我開始認爲它是readLine()和split()，它通過分配許多String對象並填充堆來引起此，這裏是運行此循環時的logcat：
11-21 08:12:16.277: D/dalvikvm(2351): GC_FOR_MALLOC freed 8640 objects/519088 bytes in 31ms
11-21 08:12:16.377: D/dalvikvm(2351): GC_FOR_MALLOC freed 13943 objects/617264 bytes in 34ms
11-21 08:12:16.467: D/dalvikvm(2351): GC_FOR_MALLOC freed 13073 objects/578176 bytes in 31ms
11-21 08:12:16.567: D/dalvikvm(2351): GC_FOR_MALLOC freed 13079 objects/578168 bytes in 32ms
11-21 08:12:16.657: D/dalvikvm(2351): GC_FOR_MALLOC freed 13073 objects/578144 bytes in 31ms
11-21 08:12:16.747: D/dalvikvm(2351): GC_FOR_MALLOC freed 13073 objects/578128 bytes in 31ms
11-21 08:12:16.837: D/dalvikvm(2351): GC_FOR_MALLOC freed 13075 objects/578104 bytes in 31ms
11-21 08:12:16.927: D/dalvikvm(2351): GC_FOR_MALLOC freed 13073 objects/578176 bytes in 31ms
11-21 08:12:17.017: D/dalvikvm(2351): GC_FOR_MALLOC freed 13073 objects/578152 bytes in 31ms
11-21 08:12:17.107: D/dalvikvm(2351): GC_FOR_MALLOC freed 13076 objects/578176 bytes in 31ms
11-21 08:12:17.197: D/dalvikvm(2351): GC_FOR_MALLOC freed 13077 objects/578176 bytes in 31ms
11-21 08:12:17.227: D/dalvikvm(2351): GC_FOR_MALLOC freed 1417 objects/88168 bytes in 28ms
11-21 08:12:17.237: I/dalvikvm-heap(2351): Grow heap (frag case) to 4.463MB for 278976-byte allocation
11-21 08:12:17.277: D/dalvikvm(2351): GC_FOR_MALLOC freed 0 objects/0 bytes in 41ms
11-21 08:12:17.317: D/dalvikvm(2351): GC_FOR_MALLOC freed 100 objects/3912 bytes in 45ms
11-21 08:12:17.317: I/dalvikvm-heap(2351): Grow heap (frag case) to 4.726MB for 278976-byte allocation
11-21 08:12:17.377: D/dalvikvm(2351): GC_FOR_MALLOC freed 0 objects/0 bytes in 53ms
11-21 08:12:17.627: D/dalvikvm(2351): GC_FOR_MALLOC freed 16432 objects/572048 bytes in 40ms
11-21 08:12:17.907: D/dalvikvm(2351): GC_FOR_MALLOC freed 21312 objects/779968 bytes in 48ms
11-21 08:12:18.187: D/dalvikvm(2351): GC_FOR_MALLOC freed 21582 objects/791496 bytes in 45ms
11-21 08:12:18.527: D/dalvikvm(2351): GC_FOR_MALLOC freed 21918 objects/805336 bytes in 52ms
11-21 08:12:18.767: D/dalvikvm(2351): GC_FOR_MALLOC freed 22258 objects/818384 bytes in 50ms
11-21 08:12:19.017: D/dalvikvm(2351): GC_FOR_MALLOC freed 22550 objects/830456 bytes in 52ms
11-21 08:12:19.277: D/dalvikvm(2351): GC_FOR_MALLOC freed 24160 objects/887640 bytes in 50ms
11-21 08:12:19.547: D/dalvikvm(2351): GC_FOR_MALLOC freed 24386 objects/900944 bytes in 53ms
11-21 08:12:19.827: D/dalvikvm(2351): GC_FOR_MALLOC freed 24575 objects/908088 bytes in 53ms
11-21 08:12:20.137: D/dalvikvm(2351): GC_FOR_MALLOC freed 24785 objects/917320 bytes in 58ms
11-21 08:12:20.597: D/dalvikvm(2351): GC_FOR_MALLOC freed 24958 objects/924104 bytes in 59ms
11-21 08:12:20.937: D/dalvikvm(2351): GC_FOR_MALLOC freed 25145 objects/932488 bytes in 62ms
11-21 08:12:21.227: D/dalvikvm(2351): GC_FOR_MALLOC freed 25336 objects/940096 bytes in 64ms
11-21 08:12:21.837: D/dalvikvm(2351): GC_FOR_MALLOC freed 26830 objects/993552 bytes in 256ms
11-21 08:12:22.477: D/dalvikvm(2351): GC_FOR_MALLOC freed 26934 objects/1001584 bytes in 65ms
11-21 08:12:22.797: D/dalvikvm(2351): GC_FOR_MALLOC freed 27056 objects/1005400 bytes in 65ms
11-21 08:12:23.127: D/dalvikvm(2351): GC_FOR_MALLOC freed 27159 objects/1009248 bytes in 75ms
11-21 08:12:23.467: D/dalvikvm(2351): GC_FOR_MALLOC freed 28594 objects/1058760 bytes in 75ms
11-21 08:12:23.817: D/dalvikvm(2351): GC_FOR_MALLOC freed 28643 objects/1065424 bytes in 70ms
11-21 08:12:24.157: D/dalvikvm(2351): GC_FOR_MALLOC freed 28650 objects/1063104 bytes in 71ms
11-21 08:12:24.507: D/dalvikvm(2351): GC_FOR_MALLOC freed 30001 objects/1110840 bytes in 76ms
11-21 08:12:24.837: D/dalvikvm(2351): GC_FOR_MALLOC freed 29989 objects/1114480 bytes in 76ms
11-21 08:12:25.197: D/dalvikvm(2351): GC_FOR_MALLOC freed 29928 objects/1112088 bytes in 82ms
11-21 08:12:25.547: D/dalvikvm(2351): GC_FOR_MALLOC freed 31223 objects/1157600 bytes in 80ms
11-21 08:12:25.918: D/dalvikvm(2351): GC_FOR_MALLOC freed 31156 objects/1158728 bytes in 75ms
11-21 08:12:26.297: D/dalvikvm(2351): GC_FOR_MALLOC freed 32364 objects/1200176 bytes in 80ms
11-21 08:12:26.667: D/dalvikvm(2351): GC_FOR_MALLOC freed 32245 objects/1199544 bytes in 78ms
11-21 08:12:27.047: D/dalvikvm(2351): GC_FOR_MALLOC freed 33392 objects/1237880 bytes in 73ms
11-21 08:12:27.457: D/dalvikvm(2351): GC_FOR_MALLOC freed 33223 objects/1236256 bytes in 83ms
11-21 08:12:27.857: D/dalvikvm(2351): GC_FOR_MALLOC freed 34326 objects/1274488 bytes in 90ms
11-21 08:12:28.267: D/dalvikvm(2351): GC_FOR_MALLOC freed 35443 objects/1316328 bytes in 87ms
11-21 08:12:28.667: D/dalvikvm(2351): GC_FOR_MALLOC freed 35154 objects/1308232 bytes in 90ms
11-21 08:12:29.167: D/dalvikvm(2351): GC_FOR_MALLOC freed 36188 objects/1343032 bytes in 88ms
11-21 08:12:29.597: D/dalvikvm(2351): GC_FOR_MALLOC freed 37185 objects/1382272 bytes in 90ms
11-21 08:12:30.027: D/dalvikvm(2351): GC_FOR_MALLOC freed 36818 objects/1369776 bytes in 96ms
11-21 08:12:30.507: D/dalvikvm(2351): GC_FOR_MALLOC freed 37768 objects/1403688 bytes in 108ms
11-21 08:12:30.967: D/dalvikvm(2351): GC_FOR_MALLOC freed 38717 objects/1439096 bytes in 98ms
11-21 08:12:31.437: D/dalvikvm(2351): GC_FOR_MALLOC freed 39601 objects/1471320 bytes in 102ms
11-21 08:12:31.897: D/dalvikvm(2351): GC_FOR_MALLOC freed 40432 objects/1502408 bytes in 103ms
11-21 08:12:32.377: D/dalvikvm(2351): GC_FOR_MALLOC freed 41252 objects/1532248 bytes in 102ms
11-21 08:12:32.857: D/dalvikvm(2351): GC_FOR_MALLOC freed 40715 objects/1516256 bytes in 107ms
11-21 08:12:33.337: D/dalvikvm(2351): GC_FOR_MALLOC freed 41442 objects/1540168 bytes in 109ms
11-21 08:12:33.837: D/dalvikvm(2351): GC_FOR_MALLOC freed 42223 objects/1568280 bytes in 114ms
11-21 08:12:34.357: D/dalvikvm(2351): GC_FOR_MALLOC freed 42918 objects/1595072 bytes in 109ms
11-21 08:12:34.857: D/dalvikvm(2351): GC_FOR_MALLOC freed 43604 objects/1621272 bytes in 111ms
11-21 08:12:35.387: D/dalvikvm(2351): GC_FOR_MALLOC freed 44236 objects/1643136 bytes in 119ms
11-21 08:12:35.917: D/dalvikvm(2351): GC_FOR_MALLOC freed 44833 objects/1667152 bytes in 125ms
11-21 08:12:36.457: D/dalvikvm(2351): GC_FOR_MALLOC freed 45441 objects/1689152 bytes in 123ms
11-21 08:12:36.997: D/dalvikvm(2351): GC_FOR_MALLOC freed 46002 objects/1710696 bytes in 126ms
11-21 08:12:37.327: D/dalvikvm(2351): GC_FOR_MALLOC freed 20464 objects/838800 bytes in 109ms
11-21 08:12:37.327: I/dalvikvm-heap(2351): Grow heap (frag case) to 8.357MB for 278752-byte allocation
11-21 08:12:37.417: D/dalvikvm(2351): GC_FOR_MALLOC freed 624 objects/28192 bytes in 88ms
11-21 08:12:37.417: I/dalvikvm-heap(2351): Grow heap (frag case) to 8.595MB for 278752-byte allocation
11-21 08:12:37.507: D/dalvikvm(2351): GC_FOR_MALLOC freed 605 objects/26136 bytes in 94ms
11-21 08:12:37.627: D/dalvikvm(2351): GC_EXTERNAL_ALLOC freed 1771 objects/79408 bytes in 95ms
11-21 08:12:37.677: I/global(2351): Default buffer size used in BufferedReader constructor. It would be better to be explicit if an 8k-char buffer is required.
11-21 08:12:38.147: D/dalvikvm(2351): GC_FOR_MALLOC freed 47316 objects/1682624 bytes in 125ms
11-21 08:12:38.607: D/dalvikvm(2351): GC_FOR_MALLOC freed 50691 objects/1886456 bytes in 125ms
11-21 08:12:39.077: D/dalvikvm(2351): GC_FOR_MALLOC freed 50346 objects/1867368 bytes in 125ms
11-21 08:12:39.557: D/dalvikvm(2351): GC_FOR_MALLOC freed 50983 objects/1860976 bytes in 134ms
11-21 08:12:40.007: D/dalvikvm(2351): GC_FOR_MALLOC freed 49459 objects/1851056 bytes in 131ms
11-21 08:12:40.517: D/dalvikvm(2351): GC_FOR_MALLOC freed 50486 objects/1842352 bytes in 135ms
11-21 08:12:40.797: D/dalvikvm(2351): GC_FOR_MALLOC freed 24273 objects/970136 bytes in 121ms
11-21 08:12:40.797: I/dalvikvm-heap(2351): Grow heap (frag case) to 10.441MB for 46508-byte allocation
11-21 08:12:40.897: D/dalvikvm(2351): GC_FOR_MALLOC freed 1206 objects/89576 bytes in 98ms
11-21 08:12:41.367: D/dalvikvm(2351): GC_FOR_MALLOC freed 50141 objects/1769760 bytes in 128ms
11-21 08:12:41.847: D/dalvikvm(2351): GC_FOR_MALLOC freed 50484 objects/1853208 bytes in 133ms
11-21 08:12:42.317: D/dalvikvm(2351): GC_FOR_MALLOC freed 50492 objects/1842496 bytes in 135ms
11-21 08:12:42.517: D/dalvikvm(2351): GC_FOR_MALLOC freed 12082 objects/502744 bytes in 110ms
11-21 08:12:42.517: I/dalvikvm-heap(2351): Grow heap (frag case) to 10.589MB for 69752-byte allocation
11-21 08:12:42.627: D/dalvikvm(2351): GC_FOR_MALLOC freed 410 objects/66160 bytes in 106ms
11-21 08:12:42.727: D/dalvikvm(2351): GC_FOR_MALLOC freed 408 objects/19520 bytes in 102ms
11-21 08:12:42.727: I/dalvikvm-heap(2351): Grow heap (frag case) to 10.574MB for 69752-byte allocation
11-21 08:12:42.847: D/dalvikvm(2351): GC_FOR_MALLOC freed 1 objects/46512 bytes in 117ms
11-21 08:12:43.317: D/dalvikvm(2351): GC_FOR_MALLOC freed 48763 objects/1708184 bytes in 136ms
11-21 08:12:43.807: D/dalvikvm(2351): GC_FOR_MALLOC freed 52176 objects/1909352 bytes in 139ms
11-21 08:12:44.287: D/dalvikvm(2351): GC_FOR_MALLOC freed 50568 objects/1848768 bytes in 140ms
11-21 08:12:44.747: D/dalvikvm(2351): GC_FOR_MALLOC freed 49024 objects/1793368 bytes in 134ms
11-21 08:12:45.157: D/dalvikvm(2351): GC_FOR_MALLOC freed 39117 objects/1451904 bytes in 135ms
11-21 08:12:45.157: I/dalvikvm-heap(2351): Grow heap (frag case) to 11.120MB for 104620-byte allocation
11-21 08:12:45.267: D/dalvikvm(2351): GC_FOR_MALLOC freed 395 objects/88912 bytes in 107ms
11-21 08:12:45.367: D/dalvikvm(2351): GC_FOR_MALLOC freed 1380 objects/67848 bytes in 103ms
11-21 08:12:45.367: I/dalvikvm-heap(2351): Grow heap (frag case) to 11.070MB for 104620-byte allocation
11-21 08:12:45.467: D/dalvikvm(2351): GC_FOR_MALLOC freed 596 objects/98320 bytes in 100ms
11-21 08:12:45.957: D/dalvikvm(2351): GC_FOR_MALLOC freed 51102 objects/1812792 bytes in 140ms
11-21 08:12:46.457: D/dalvikvm(2351): GC_FOR_MALLOC freed 50849 objects/1862544 bytes in 148ms
11-21 08:12:46.927: D/dalvikvm(2351): GC_FOR_MALLOC freed 49318 objects/1802448 bytes in 140ms
11-21 08:12:47.407: D/dalvikvm(2351): GC_FOR_MALLOC freed 49392 objects/1802936 bytes in 143ms
11-21 08:12:47.887: D/dalvikvm(2351): GC_FOR_MALLOC freed 49495 objects/1805800 bytes in 150ms
11-21 08:12:48.377: D/dalvikvm(2351): GC_FOR_MALLOC freed 49539 objects/1806848 bytes in 148ms
11-21 08:12:48.857: D/dalvikvm(2351): GC_FOR_MALLOC freed 49652 objects/1810752 bytes in 142ms
11-21 08:12:49.117: D/dalvikvm(2351): GC_FOR_MALLOC freed 17452 objects/696544 bytes in 132ms
11-21 08:12:49.117: I/dalvikvm-heap(2351): Grow heap (frag case) to 11.520MB for 156920-byte allocation
11-21 08:12:49.237: D/dalvikvm(2351): GC_FOR_MALLOC freed 510 objects/129792 bytes in 122ms
11-21 08:12:49.357: D/dalvikvm(2351): GC_FOR_MALLOC freed 786 objects/37712 bytes in 121ms
11-21 08:12:49.357: I/dalvikvm-heap(2351): Grow heap (frag case) to 11.510MB for 156920-byte allocation
11-21 08:12:49.487: D/dalvikvm(2351): GC_FOR_MALLOC freed 1 objects/104624 bytes in 131ms
11-21 08:12:49.987: D/dalvikvm(2351): GC_FOR_MALLOC freed 49227 objects/1721856 bytes in 165ms
11-21 08:12:50.547: D/dalvikvm(2351): GC_FOR_MALLOC freed 53182 objects/1943240 bytes in 155ms
11-21 08:12:51.067: D/dalvikvm(2351): GC_FOR_MALLOC freed 51447 objects/1875984 bytes in 155ms
11-21 08:12:51.607: D/dalvikvm(2351): GC_FOR_MALLOC freed 49938 objects/1820528 bytes in 157ms
11-21 08:12:52.117: D/dalvikvm(2351): GC_FOR_MALLOC freed 48500 objects/1768472 bytes in 156ms
11-21 08:12:52.637: D/dalvikvm(2351): GC_FOR_MALLOC freed 48629 objects/1771176 bytes in 164ms
11-21 08:12:53.157: D/dalvikvm(2351): GC_FOR_MALLOC freed 48672 objects/1773880 bytes in 163ms
11-21 08:12:53.678: D/dalvikvm(2351): GC_FOR_MALLOC freed 48755 objects/1777616 bytes in 164ms
11-21 08:12:54.197: D/dalvikvm(2351): GC_FOR_MALLOC freed 48814 objects/1780776 bytes in 165ms
11-21 08:12:54.718: D/dalvikvm(2351): GC_FOR_MALLOC freed 48915 objects/1783368 bytes in 164ms
11-21 08:12:55.237: D/dalvikvm(2351): GC_FOR_MALLOC freed 47448 objects/1733344 bytes in 168ms
所以我想我必須找到的readLine（）和分裂（）替代讀取格式的CSV文件：
double , double \n
我猜它必須是一個緩衝的讀取線始終使用相同的緩衝區 任何已經實現的提供該能力的類的建議？
什麼你想在陣列TS，放大器辦？保存在內存中？在他們的運行？ 您是否考慮將解析和處理分解爲一些小組的可能性？ – MeNa