如何編碼它獲得方法

-1

通過錯誤基本上我試圖建立一個計算器，將允許用戶選擇1-5乘法，減法，乘法或除法的選項。無論他們選擇什麼，我都會要求他們在選擇他們想要的功能後輸入2數字。我試圖把這一點放入下面的計算位，但我在這裏遇到這個錯誤，不知道它應該如何格式化。在這部分代碼中，我收到錯誤。如何編碼它獲得方法

inputOperation = mySelection.selectionOne().equals("5"); //this is where I a getting the error "cannot convert boolean to int"

我試圖在下面的代碼中插入的部分是（我認爲）：

public class Selection { 
    Scanner readInput = new Scanner(System.in); 



String selectionOne() { 
    String input; 
    do { //do loop will continue to run until user enters correct response 
     System.out.print("Please enter a number between 1 and 5, A for Addition, S for Subtraction, M for Multiplication, or D for Division, or X for Exit: "); 
     try { 
      input = readInput.nextLine(); //user will enter a response 
      if (input.equals("A") || input.equals("S") || input.equals("M") || input.equals("D") || input.equals("X")) { 
       System.out.println("Thank you"); 
       break; //user entered a character of A, S, M, or D 
      } else if (Integer.parseInt(input) >= 1 && Integer.parseInt(input) <= 5) { 
       System.out.println("Thank you"); 
       break; //user entered a number between 1 and 5 
      } else { 
       System.out.println("Sorry, you have not entered the correct number, please try again."); 
      } 
      continue; 
     } 
     catch (final NumberFormatException e) { 
      System.out.println("You have entered an invalid choice. Try again."); 
      continue; // loop will continue until correct answer is found 
     } 
    } while (true); 
    return input; 
}

。

public class answers { 

public float answer(int choice, float [] f){ 
    float result = 0.00f; 

    switch (choice){ 
    case 1: result = f[0]+f[1]; break; 
    case 2: result = f[0]-f[1]; break; 
    case 3: result = f[0]*f[1]; break; 
    case 4: result = f[0]/f[1]; break; 
    case 5: System.out.println("You are now exting the program \n"); break; 
    default: System.out.println("Cannot calculate.\n You entered" + choice); break; 

    } 
    return result; 
} 

public static void main (String args[]){ 
    int inputOperation; 
    Selection mySelection = new Selection(); 

    inputOperation = mySelection.selectionOne().equals("5"); //this is where I a getting the error "cannot convert boolean to int" 
    Symbol.newSymbol("You entered a choice of " + inputOperation + " successfully\n\n"); 
    Symbol.displaySymbol(); 
    float [] myFloats = mySelection.pickNumbers(inputOperation); 
    Symbol.newSymbol("You entered " + myFloats[0] + " and " + myFloats[1] + " successfully\n\n") ; 
    Symbol.displaySymbol(); 
} 
}

來源

2014-11-04 userQuestion

布爾型\t equals（Object anObject）將此字符串與指定對象進行比較。 – 2014-11-04 05:40:20

equals方法的結果是布爾值 – Taras 2014-11-04 05:40:44