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                ``` public class Demo { public static void main(String[] args) { Person xm = new Person(); xm.age = 10; xm.name = "小明"; } } class Person { int age; String name; } ``` #### #### 這是一段非常簡單的代碼,請回答下面幾個問題? 1\. 執行main方法時候,內存分配情況? 2\. 多個線程同時執行main方法的時候,內存分配情況? 3\. 能不能定量的分析下main方法的內存足跡? 本小結,會分析下上面這個三個問題。 ### 擴展問題 ``` public class Demo { public static void main(String[] args) { Person xm = new Person(); // 注意這兒是 += xm.age += 10; xm.name = "小明"; } } class Person { int age; String name; } ```
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