對同樣一個類別, 卻實作多個物件, 區分如下: ^^^^^^^^^ final: 值永遠不變 static: 值永遠只有一個 final static: 唯一值且不可變舉例說好了:public class A { ... final int fx = 5; static int sx = 10; ...}import A;public class B { A x1 = new A(); //x1.fx=5, x1.sx=10 A x2 = new A(); //x2.fx=5, x2.sx=10 x1.fx = 20; //編譯錯誤: 因為fx是常數 x2.sx = 20; //x1.sx=20, x2.sx=20 A.sx = 30; //x1.sx=30, x2.sx=30}
27. 用以下何項宣告可以限制類別(Class)的繼承? (A)private ..-阿摩線上測驗