Question

对于我的java课程简介，我在这个作业问题上遇到了很多麻烦。

＆＃34;设计并实施CupDispenser类。每个CupDispenser对象都有一个位置，并跟踪它当前包含的杯子数量。定义两个构造函数，为每个数据字段设置和获取方法，以及方法toString。另外，定义一个方法getOneCup，它简单地减少分配器中的杯数1.通过创建几个CupDispenser对象来演示您的类。另外，写一个驱动程序来测试你的CupDispenser课程。＆＃34;

我有点将杯子递减1，但就构造者和toStrings而言，我完全失去了。任何帮助将非常感激。

public class CupDispenser {

    private int nOfCups, initNum;

    public CupDispenser(int num) {
        this.nOfCups = num;     
        this.initNum = num;
    }

    public int decCups () {
        this.nOfCups = this.nOfCups -1;
        return this.nOfCups;
    }
    public int getNumOfCup () {
        return this.initNum;
    }

    public static void main (String [] args) {
        CupDispenser decr = new CupDispenser(10);

        for (int i=0; i<decr.getNumOfCup(); i++) {
            System.out.println(decr.decCups());
        }
    }
}

Answer 1

以下是两个类，一个是CupDispenser类，我们定义我们的字段，方法，构造函数等，另一个是实例化多个具有不同属性的CupDispenser对象。

package q23463540;

public class CupDispenser {

private int numberOfCups;
private String locationOfCups;

public CupDispenser(int numberOfCups, String locationOfCups){
    this.setNumberOfCups(numberOfCups);
    this.setLocationOfCups(locationOfCups);
}

public int getNumberOfCups() {
    return numberOfCups;
}

public void setNumberOfCups(int numberOfCups) {
    this.numberOfCups = numberOfCups;
}

public String getLocationOfCups() {
    return locationOfCups;
}

public void setLocationOfCups(String locationOfCups) {
    this.locationOfCups = locationOfCups;
}

public void decrementCups(){
    numberOfCups--;
}

@Override
public String toString() {
    // TODO Auto-generated method stub

    String result = ("Number of Cups = " + numberOfCups + ". Location of Cups = " + locationOfCups + ".");

    return result.toString();
}


}

package org.apothem.stackoverflow;

import q23463540.CupDispenser;

public class StackOverflow {

public static void main(String[] args) {
    // TODO Auto-generated method stub

    CupDispenser cd1 = new CupDispenser(5, "Los Angeles");
    CupDispenser cd2 = new CupDispenser(10, "New York");

    System.out.println(cd1.toString());
    System.out.println(cd2.toString());

    cd1.setNumberOfCups(7);
    cd1.setLocationOfCups("Toronto");

    cd2.decrementCups();
    cd2.decrementCups();

    System.out.println(cd1.toString());
    System.out.println(cd2.toString());
}

}

编写一个java类和一个驱动程序来测试该类

1 个答案: