作者查詢 / ssccg
作者 ssccg 在 PTT [ java ] 看板的留言(推文), 共2140則
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4F→: 現在spring八成都直接用spring web mvc,沒在struts206/13 22:50
1F→: String.substring06/07 11:57
3F→: 通常用build tool(IDE也算),也的確有javac以外的compiler06/07 00:25
1F→: classpath上找不到這些package/class06/06 14:47
3F→: -cp 指定所有會用到的jar或包含class的目錄06/06 15:27
1F→: jar檔就是zip檔06/05 15:43
1F→: new Node<>(3)會被算成 new Node<Integer>(3)06/02 18:53
2F→: <>是自動找一個可行的類別,不是照抄變數宣告的類別...06/02 18:55
1F→: 你的heap空間是指JVM process用的記憶體,還是監控JVM中有05/31 14:43
2F→: 沒被GC的物件?05/31 14:43
3F→: 前者是正常的,本來就不會頻繁把記憶體還OS,可以設定調整05/31 14:44
4F→: 後者就看那些你覺得已經沒用卻沒被GC的物件是哪來的..05/31 14:45
6F→: 你必須開一個Java project,把檔案放在裡面,才能點檔案Run05/10 16:30
7F→: as → Java application05/10 16:31
9F→: 你現在單純是用eclipse打開那個檔案,這樣eclipse沒有build05/10 16:32
10F→: 資訊所以不能跑05/10 16:33
12F→: 就是因為另外寫if才會錯啊05/09 13:09
13F→: A and B就已經包含在A or B裡面了05/09 13:09
14F→: 只寫if 不用else的話,每個條件都必須不會互相包含05/09 13:11
15F→: 寫if else if 要由不包含其他條件的依序放寬05/09 13:12
16F→: 邏輯觀念的問題比較大05/09 13:13
1F→: 多條thread本來就不會照順序執行,你要依序執行為什麼不用05/09 13:01
2F→: single thread就好?05/09 13:02
3F→: 把new Thread移到最外面,整段都在一個thread裡做才對吧05/09 13:03