執行結果是什麼?public class Demo { public static int demoFunction(boolean input) { try { if (input) return 1; } finally { System.out.println("finally..."); } return -1; } public static void main(String[] args) { System.out.println(demoFunction(true); }}
finally...
1
SQL考題
具體題目忘了，依照具體狀況回答，大致語法方向:
SELECT
MAX(s.Age) - MIN(s.Age) AS Age_Difference
FROM Student s
JOIN StudentCourse sc ON s.SID = sc.SID
JOIN Course c ON sc.CID = c.CID
WHERE c.Title = '資料結構';
這邊比較鬧是題目上寫"兩張" schema，但其實給的schema有"三張"
我當下時間壓力+腦袋打結想說
schema不合理這要怎寫?還是我漏看了什麼??
class B { public B() { System.out.println("B constructor"); }}class A extends B { static { System.out.println("A static"); } public A() { System.out.println("A constructor"); }}public class Test { public static void main(String[] args) { new A(); }}執行結果為何?
