递增1并将其与每个创建的对象相加? [英] increments by 1 and add it with every created object?

问题描述

class MyObject {

static int instanceCounter = 0;

static int counter = 0;

MyObject() {

instanceCounter++;

counter = counter + 1;

}

}

我正在使用静态整数获取此输出:

I am using the static ints to get this output:

对象1:5的instanceCounter的值

Value of instanceCounter for Object 1: 5

MyObject的instanceCounter的值:5

Value of instanceCounter for MyObject: 5

对象1的计数器值

对象2的计数器值2

对象3的计数器值

对象4的计数器值:4

Value of Counter for Object 4: 4

对象5的计数器值:5

Value of Counter for Object 5: 5

但显示

对象1:5的instanceCounter的值

Value of instanceCounter for Object 1: 5

MyObject的instanceCounter的值:5

Value of instanceCounter for MyObject: 5

对象1的计数器值5

对象2的计数器值5

对象3的计数器值5

对象4的计数器值:5

Value of Counter for Object 4: 5

对象5的计数器值:5

Value of Counter for Object 5: 5

我的跑步者班

class RunMyObject {

public static void main(String[] args) {

MyObject Object1 = new MyObject();

MyObject Object2 = new MyObject();

MyObject Object3 = new MyObject();

MyObject Object4 = new MyObject();


MyObject Object5 = new MyObject();

System.out.println("Value of instanceCounter for Object 1: " + Object1.instanceCounter);

System.out.println("Value of instanceCounter for MyObject: " + MyObject.instanceCounter);

System.out.println("Value of Counter for Object 1: " + Object1.counter);

System.out.println("Value of Counter for Object 2: " + Object2.counter);

System.out.println("Value of Counter for Object 3: " + Object3.counter);

System.out.println("Value of Counter for Object 4: " + Object4.counter);

System.out.println("Value of Counter for Object 5: " + Object5.counter);

}

}

如果我删除了static，这就是它显示的内容

and if i remove static this is what it displays

对象1:5的instanceCounter的值

Value of instanceCounter for Object 1: 5

MyObject的instanceCounter的值:5

Value of instanceCounter for MyObject: 5

对象1的计数器值

对象2的计数器值

对象3的计数器值

对象4的计数器值:1

Value of Counter for Object 4: 1

对象5的计数器值:1

Value of Counter for Object 5: 1

推荐答案

由于instanceCounter是静态变量，因此所有对象共享同一变量.由于在每个对象构造期间都增加instanceCounter，因此在创建5个对象结束时，其值为5. 因此，您在所有系统输出中的输出均为5.多数民众赞成在静态点

Since instanceCounter is a static variable, all objects share the same variable. Since you are incrementing the instanceCounter during each object construction, at the end of creating 5 objects, its value is 5. Consequently you get the output as 5 in all your sys outs. Thats the point of static

编辑
要实现您所需要的，请执行以下操作:

EDIT
To achieve what you need, do the following:

class MyObject  {

    static int instanceCounter = 0;

    int counter = 0;

    MyObject() 
    {
        instanceCounter++;
        counter = instanceCounter;
    }

}

这篇关于递增1并将其与每个创建的对象相加?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！