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                # static 屬性 --- ## 問題 下面得問程序片段將輸出什么結果? ``` public class Test { private int x; private static int y; public static void main(String[] args) { Test ts1 = new Test(); Test ts2 = new Test(); ts1.addXY(); ts2.addXY(); System.out.println(ts1.x); System.out.println(ts1.y); } public void addXY() { x++; y++; } } ``` ## 結果 輸出 1 2 ## 結論 #### 如果屬性用static修飾,則成為類屬性,所有對象共享。static屬性只能初始化一次,任何對象對其修改都修改的是同一個地址空間的值,因此y的值是累加的結果。而非static屬性是對象屬性,屬于每一個對象,每創建一個對象,將初始化一個實例屬性,因此x的值不是累加的。
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