Java 中实例化后的对象间如何交互传递数据?

发布网友 发布时间：2022-04-25 15:38

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热心网友 时间：2023-10-13 16:35

一般用传参来解决的，示例如下：

package test20210106;

/**灯泡类*/

public class Bulb {

//发光量

private double glowAmount;

//get、set方法

    public double getGlowAmount() {

        return glowAmount;

    }

    public void setGlowAmount(double glowAmount) {

        this.glowAmount = glowAmount;

    }

}

package test20210106;

/**开关类*/

public class Switch {

    /**设置发光量30%*/

    public void glowAmount30(Bulb bulb){

        bulb.setGlowAmount(0.3);

        System.out.println("当前灯泡的发光量是：  "+(int)(bulb.getGlowAmount()*100)+"%");

    }

    /**设置发光量60%*/

    public void glowAmount60(Bulb bulb){

        bulb.setGlowAmount(0.6);

        System.out.println("当前灯泡的发光量是：  "+(int)(bulb.getGlowAmount()*100)+"%");

    }

    /**设置发光量100%*/

    public void glowAmount100(Bulb bulb){

        bulb.setGlowAmount(1);

        System.out.println("当前灯泡的发光量是：  "+(int)(bulb.getGlowAmount()*100)+"%");

    }

}

package test20210106;

//

public class Test {

    public static void main(String[] args) {

        Bulb bulb = new Bulb();

        Switch s = new Switch();

        s.glowAmount30(bulb);

        s.glowAmount60(bulb);

        s.glowAmount100(bulb);

    }

}