如何在java上使用if语句结束一个结果？

Question

if (number1 + 8 == number2 || number1 - 8 == number2){ 

     if (name1.equals(name2)){ 

      if (cod1 == cod2){ 

       if (some1.equals(some2)){ 

       System.out.println("They're in the same group"); 
       } 

      System.out.println("They are in the same column");; 
      } 

     System.out.println("They are in the same section"); 
     } 

    System.out.println("They are in the same subgroup"); 
    } 

    else{ 
    System.out.println("They are different"); 
    } 
    } 
} 

我怎么能改变这个，让我只在最后得到一个消息？现在它提供了所有的信息，或只是它们不同。我知道我不能把一个实际的休息，因为这不是一个循环，但我可以采取什么行动在这个问题？我需要重写吗？感谢您的帮助。

Answer 1

String output = "";，然后将所有的System.out.println s替换为output =，并将字符串更改为适当的输出。此外，字符串分配需要在嵌套if之前。

然后最外面的外if else，做System.out.println(output);

String output = ""; 
if (number1 + 8 == number2 || number1 - 8 == number2){ 
    output = "They are in the same subgroup"; 
    if (name1.equals(name2)){ 
     output="They are in the same section"; 
     if (cod1 == cod2){ 
      output="They are in the same column"; 
      if (some1.equals(some2)){ 
       output="They're in the same group"; 
      } 
     } 
    } 
} 

else{ 
    output="They are different"; 
} 

System.out.println(output); 

Answer 2

if (number1 + 8 == number2 || number1 - 8 == number2) { 

    if ("abc".equals("def")) { 

     if (cod1 == cod2) { 

      if (some1.equals(some2)) { 

       System.out.println("They're in the same group"); 
      } else 

       System.out.println("They are in the same column"); 
      ; 
     } else 

      System.out.println("They are in the same section"); 
    } else 

     System.out.println("They are in the same subgroup"); 
} 

else { 
    System.out.println("They are different"); 
} 

使用其他条件与若。

Answer 3

我不确定组，列和部分之间的关​​系，但是您可以先做一些类似的事情，比如检查最具体的案例。这避免了多层嵌套条件。

if (some1.equals(some2)) { 
    System.out.println("They're in the same group"); 
} else if (cod1 == cod2) { 
    System.out.println("They are in the same column"); 
} else if (name1.equals(name2)) { 
    System.out.println("They are in the same section"); 
} else if (number1 + 8 == number2 || number1 - 8 == number2) { 
    System.out.println("They are in the same subgroup"); 
} else { 
    System.out.println("They are different"); 
} 

它将工作只有当群体在所有列独一无二的 - 例如，检查两种生物是否相同物种，然后扩大，检查属，然后因为你赢了”家庭将是有效的在不同的属中有相同的物种名称;但是通过首先检查街道名称来测试房屋地址是否相同是无效的，因为您将在不同的城市中拥有相同名称的街道。