检查以下代码是否有逻辑错误，应该如何修改package money; import java.util.Scanner; public class Money { public static void main(String[] args) { // TODO Auto-generated method stub Scanner in = new Scanner(System.in); int fen = in.nextInt(); Moneys x = new Moneys(fen); x.conversion(); x.show(); in.close(); } } class Moneys{ private int fen; private int jiao; private int yuan; public void conversion(){ this.fen = fen%10; this.jiao = fen/10%10; this.yuan = fen/100; } public void show() { System.out.println(yuan+"yuan"+jiao+"jiao"+fen+"fen"); } public Moneys(int fen) { this.fen = fen; } public Moneys(int yuan,int jiao,int fen) { this.fen = fen; this.jiao = jiao; this.yuan = yuan; } }

代码存在逻辑错误，因为在Moneys类的conversion方法中，fen没有被初始化，因此无输入多少钱数，都会0元0角0分应该修改为以下：

class Moneys{
    private int;
    private int jiao;
    private int;
    public void conversion(){
        this.fen this.fen%10;
        this.jiao = this.fen/10%;
        this.yuan =.fen/100;
       public void show() {
 System.out.println(yuan+"yuan"+jiao+"jiao"+fen+"fen");
    }
    public Moneys(int fen) {
        this.fen = fen;
    }
    public Moneys(int yuan,int jiao,int fen) {
        this.fen = fen;
        this.jiao = jiao;
        this.yuan = yuan;
    }
}

在conversion方法中，应该使用this.fen来指代类的属性fen，而不是局部变量fen。

相关问题

检查package money; import java.util.Scanner; public class Money { public static void main(String[] args) { // TODO Auto-generated method stub Scanner in = new Scanner(System.in); int fen = in.nextInt(); Moneys x = new Moneys(fen); x.conversion(); x.show(); in.close(); } } class Moneys{ private int fen; private int jiao; private int yuan; public void conversion(){ this.fen = fen%10; this.jiao = fen/10%10; this.yuan = fen/100; } public void show() { System.out.println(yuan+"yuan"+jiao+"jiao"+fen+"fen"); } public Moneys(int fen) { this.fen = fen; } public Moneys(int yuan,int jiao,int fen) { this.fen = fen; this.jiao = jiao; this.yuan = yuan; } }

这段代码的功能是将输入的分转换成元、角、分的形式，并输出转换后的结果。其中，程序通过Scanner类实现输入，然后创建Moneys类的对象x，将输入的分作为参数传入Moneys类的构造函数中，然后调用Moneys类的conversion()方法将分转换成元、角、分的形式，并将转换后的结果输出。Moneys类中包括了两个构造函数，一个是只接收分作为参数的构造函数，另一个是接收元、角、分三个参数的构造函数。在conversion()方法中，使用了整数除法和取余运算，将分转换成元、角、分的形式，并赋值给类的成员变量yuan、jiao、fen。在show()方法中，通过输出语句将转换后的结果输出。最后，关闭了Scanner对象in。

package touge; public class MobileShop{ /*************Begin***************/ private int mobileAmount;// 手机数量 public int moneyValue; MobileShop(int m) { moneyValue = m; } void setMobileAmount(int m) { mobileAmount = m; } int getMobileAmount() { return mobileAmount; } class purchaseMoney { int moneyValue; void buyMobile() { int num = moneyValue / 5000; mobileAmount = mobileAmount - num; System.out.println("用价值" + moneyValue + "的内部购物券买了"+num+"部手机"); } } /*************End***************/ }package touge; import java.util.Scanner; public class Test2{ public static void main(String args[]) { Scanner sc = new Scanner(System.in); int m = sc.nextInt(); MobileShop shop = new MobileShop(m); shop.setMobileAmount(30); System.out.println("手机专卖店目前有"+shop.getMobileAmount()+"部手机"); shop.purchaseMoney.buyMobile(); System.out.println("手机专卖店目前还有"+shop.getMobileAmount()+"部手机"); } shop.purchaseMoney.buyMobile();应为类或软件包

shop.purchaseMoney.buyMobile();应该放在main函数内部，因为purchaseMoney是MobileShop的内部类，需要通过MobileShop对象来进行调用。修改后的代码如下：

package touge;

import java.util.Scanner;

public class Test2 {
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        int m = sc.nextInt();
        MobileShop shop = new MobileShop(m);
        shop.setMobileAmount(30);
        System.out.println("手机专卖店目前有" + shop.getMobileAmount() + "部手机");
        MobileShop.purchaseMoney purchase = shop.new purchaseMoney();
        purchase.buyMobile();
        System.out.println("手机专卖店目前还有" + shop.getMobileAmount() + "部手机");
    }
}