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    # 緯創 ## 筆試 1. 考delete,substring,replace字串異動觀念 給一字串s = ”123456789”,問要如何操作會變成”4247” 選項是由一堆delete substring replace insert 組成 (例如: StringBuffer s = new StringBuffer("123456789"); s.delete(0, 3).delete(1, 3).delete(2, 4).insert(1, 24); ) 2. Class Cat extends Animals{void speak(){System.out.println(“喵”);}} public class Dog extends Animals{ @Override void speak() { // TODO Auto-generated method stub System.out.println("汪"); } public static void main(String[] args) { // TODO Auto-generated method stub Animals[] animals = new Animals[2]; animals[0] = new Dog(); animals[1] = new Cat(); for (int i = 0; i < animals.length; i++) { animals[i].speak(); } } } 寫出印甚麼? Ans:汪 換行 喵 3. 選項有 a、b、c、ac、abc try { throw new Exception();*** (這邊我拿到的不是這樣寫,只有寫當"sort of exception" 我是看不懂他的意思,也查不到) }catch(NullPointerException ne){ System.out.print("a"); }catch(Exception e) { System.out.print("b"); }finally { System.out.print("c"); } 答案一定有c 我會猜c或ac 4. 有一個物件內有一變數free是boolean型態,setter要如何設計才正確 boolean free; public boolean getFree() { return free; } public void setFree(boolean free) { this.free = free; } 5. 給一段code問哪些物件會被垃圾回收機制回收 6. 給一段code問 會輸出甚麼 (x+=x)如果是直接印出來的話答案是2x 7. Set<Integer> examSet = new HashSet<Integer>(); 我猜是考不會印重複的東西 結果是我沒印到圖片 答案應該是 2換行1換行1 8. 一堆選項,問哪些是基礎型態(byte、short、int、long、float、double、char、boolean) 9. is-a has-a觀念 is-a代表類別之間階層的父子關係。has-a代表類別之間的whole/part關係 10. 封裝概念 11. 多型、封裝概念 父類別要轉子類別時檢查 System.out.println(e1 instanceof FullTimeEmployeePoly); //true 12. 建構子是否可以宣告成 public、protected、private 四種封裝方式都能用 13. 封裝讀取範圍 同個套件的話可以宣告成protected default不同套件的子類別也能讀取 private就只有同個class才能讀取 14. 忘了 15. 在HTML的哪個標籤內可以寫javascript 我有點看不懂在講甚麼,所以我可能會寫在<body></body>或<head></head>裡   16. SQL考題 有3個Table,要你Join起來,A table的key是a1,B table的key也是a1,C table的key是c1 有交代語法不用太精準 select *就可以了,後面自己套 SELECT employees.EMPLOYEE_ID, employees.FIRST_NAME, employees.DEPARTMENT_ID, departments.DEPARTMENT_ID, department_name FROM employees JOIN departments ON( employees.department_id = departments.department_id); ## 面試 1. 當你發現一個很重大的問題的時候,可是你只剩下三天的時間,你會怎麼做,而且有可能是整個架構要翻掉的那種 2. 你了解會計帳嗎? 3. 你可以接受Code review嗎?(不寫Code但是要review程式) 4. 加班呢?這種情況很少但如果案子真的在趕的時候,你可以接受嗎?

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