一:== 和 equals == 比较引用的地址equals 比较引用的内容 (Object 类本身除外) String obj1 = new String("xyz"); String obj2 = new String("xyz"); // If String obj2 = obj1, the output will be true if(obj1 == obj2) System.out.printlln("obj1==obj2 is TRUE&quo…
1.当你创建你自己的类型时(不管是类还是结构),你要定义类型在什么情况下是相等的.C#提供了4个不同的方法来断定两个对象是否是相等的 public static bool ReferenceEquals ( object left, object right ); public static bool Equals ( object left, object right ); public virtual bool Equals( object right); public static boo…
先上代码 class A{ int a; static {System.out.println("载入类时执行");} public A() { System.out.println("我虽然写在初始化块前但是实际先执行初始化块里的内容再执行我"); } {System.out.println("先执行我!");} } public class Html { publ…
版权声明:本文为博主原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附上原文出处链接和本声明.本文链接:https://blog.csdn.net/u012317833/article/details/41011997在成员函数内定义static变量 成员函数内的局部变量可以是static的.如果将成员函数内的某个局部变量定义为静态变量,该类的所有对象在调用这个成员函数时将共享这个变量. class C{ public: void m(); private: int x;}; void…
先看一个例子: //class A package com.my.test; class A { static { System.out.println("A1:父类静态代码区域"); } { System.out.println("A2:父类非静态代码区域"); } public A() { System.out.println("A3:父类构造器"); } } //class B package com.my.test; public cla…
Before starting with best practices tobe followed, it is good to have clear understanding of how memory is managed (allocation, de-allocation). So, let us start with memory management first. Managed Heap and Garbage Collection Overview Memory Allocat…
