java - 如果在 Java 中，我该如何处理 else？

Question

我是 Java 的新手，我需要编写一个代码来评估您是否有责任按照这 3 个条件进行减税

• 如果您住的地方离工作地点超过 50 公里
• 独居者的工作分配最长为 1 年
• 同居者的工作分配最长为 3 年

我的代码可以编译，但它读出错误，就像如果你活得少，工作 50 岁，并且是单例，任务是一年，它仍然读取非单例者的条件，我如何让它读取哦，你是单例让我们跳过非单例的条件吗？或者如果您有任何线索，它是如何工作的。

我的代码:

import java.util.Scanner;

public class U72C {

    public static void main (String[]args) {
        Scanner input = new Scanner(System.in);
        System.out.println("What is your distance to work?");
        int distance = input.nextInt();
        System.out.println("Do you live alone = 1 or do you live togheter with someone = 2");
        int living = input.nextInt();
        System.out.println("How long are your work assigment");
        int work = input.nextInt();
        if ( distance > 50 ) {
            System.out.println("You do not get tax dedeuction because of your distance to your work place");
        }
        else if (living == 1 && living == 2) {     
        }
        else if (work > 1) {
            System.out.println("You do not get tax deduction because you live alone and your work assigment exceeds 1 year");
        }
        else if (living == 2 ) {
        }
        else if (work > 3) {
            System.out.println("You do not get tax deduction because your work assigment exceeds 3 years and you don't live alone");
        }
        else {
            System.out.println("You get tax deduction");
        }
    }
}

Answer 1

与您收到的反对票相反，我认为您的问题很棘手，因为您似乎希望针对每个潜在的逻辑流程提供精细的反馈，从而导致可能的税收减免。这是一个非常真实的问题，像 Intuit(TurboTax 的制造商)这样的公司实际上雇佣了专门从事这类事情的工程师。

boolean hasDeduction = false;

if (distance > 50) {
    if (living == 1) {
        if (work > 1) {
            String error = "You do not get tax deduction because you live alone " +
                           "and your work assigment exceeds 1 year.";
            System.out.println(error); 
        }
        else {
            hasDeduction = true;
        }
    }
    else if (living == 2) {
        if (work > 3) {
            String error = "You do not get tax deduction because you live together ";
                   error += "and your work assigment exceeds 3 years.";
            System.out.println(error); 
        }
        else {
            hasDeduction = true;
        }
    }
}
else {
    String error = "You do not get tax deduction because of your distance ";
           error += "to your work place.";
    System.out.println(error);
}

if (hasDeduction) {
    System.out.println("You get tax deduction");
}

请注意，理想情况下，我们会将这段代码放在一个实际的方法中。如果我们担心语言兼容性，可以从资源包中读取错误字符串。