Illegal Start of Expression

Question

DrTsus 0 Newbie Poster

17 Years Ago

I'm dying here. I can't find out why my code isn't working. I get "illegal start of expression" in Blue J. It's on line 34 ( if((menuchoice = = 0) && (gender.equals("M"))) )

/**
 * Brandon
 * November 14, 2007
 * TDEE
 */
import java.util.Scanner;
public class TDEE
{
    public static void main(String[] args)
    {
        Scanner keyboardInput = new Scanner(System.in);
        
        System.out.print("Please enter your name: ");
        String name = keyboardInput.nextLine();
        System.out.print("Please enter your BMR: "); 
        int bmr = keyboardInput.nextInt();
        System.out.print("Please enter your Gender (M/F): ");
        String gender = keyboardInput.next();
    
        if((gender.equalsIgnoreCase("M") || gender.equalsIgnoreCase("F")))
        { 
            gender = gender.toUpperCase();
            
            System.out.println("Select your Activity Level");
            System.out.println ("[0] Resting (Sleeping, Reclining)");
            System.out.println("[1] Sedentary (Minimal Movement)");
            System.out.println("[2] Light (Sitting, Standing)");
            System.out.println("[3] Moderate (Light Manual Labor, Dancing, Riding Bike)");
            System.out.println("[4] Very Active (Team Sports, Hard Manual Labor)");
            System.out.println("[5] Extremely Active (Full-time Athlete, Heavy Manual Labor)"); 
            System.out.print("\nEnter the letter corresponding to your activity level: ");
            int menuchoice = keyboardInput.nextInt();
            
               if((menuchoice = = 0) && (gender.equals("M"))) 
               {
                   System.out.print(menuchoice);
                   System.out.println(gender);
                }
               else if((menuchoice = = 0) && (gender.equals("F"))) 
               {
                   System.out.print(menuchoice);
                   System.out.println(gender);
                }
               else if((menuchoice = = 1) && (gender.equals("M"))) 
               {
                   System.out.print(menuchoice);
                   System.out.println(gender);
                }
                else if((menuchoice = = 1) && (gender.equals("F"))) 
               {
                   System.out.print(menuchoice);
                   System.out.println(gender);
                }
                else if((menuchoice = = 2) && (gender.equals("M"))) 
               {
                   System.out.print(menuchoice);
                   System.out.println(gender);
                }
                else if((menuchoice = = 2) && (gender.equals("F"))) 
               {
                   System.out.print(menuchoice);
                   System.out.println(gender);
                }
                else if((menuchoice = = 3) && (gender.equals("M"))) 
               {
                   System.out.print(menuchoice);
                   System.out.println(gender);
                }
                else if((menuchoice = = 3) && (gender.equals("F"))) 
               {
                   System.out.print(menuchoice);
                   System.out.println(gender);
                }
                else if((menuchoice = = 4) && (gender.equals("M")))
               {
                   System.out.print(menuchoice);
                   System.out.println(gender);
                }
                else if((menuchoice = = 4) && (gender.equals("F"))) 
               {
                   System.out.print(menuchoice);
                   System.out.println(gender);
                }
                else if((menuchoice = = 5) && (gender.equals("M")))
               {
                   System.out.print(menuchoice);
                   System.out.println(gender);
                }
                else if((menuchoice = = 5) && (gender.equals("F"))) 
               {
                   System.out.print(menuchoice);
                   System.out.println(gender);
                }
                else {
                    System.out.println("I'm sorry. You entered an invalid menu choice."); 
                }
        }
        else {
            System.out.println("I'm sorry. You entered an incorrect gender.");
        }
        
    }
}

java

4 Contributors
10 Replies
181 Views
1 Day Discussion Span
Latest Post 17 Years Ago Latest Post by iamthwee

iamthwee

17 Years Ago

do you have a space between the equals signs?

masijade 1,351 Industrious Poster

17 Years Ago

Yes he does, and I believe that is his problem. Although it would have been nice to know which line "34" was, without having to count.

iamthwee

17 Years Ago

Yes he does, and I believe that is his problem. Although it would have been nice to know which line "34" was, without having to count.

Hmm I make it:

/**
* Brandon
* November 14, 2007
* TDEE
*/
import java.util.Scanner;
public class TDEE
{
  public static void main ( String[] args )
  {
    Scanner keyboardInput = new Scanner ( System.in );

    System.out.print ( "Please enter your name: " );
    String name = keyboardInput.nextLine();
    System.out.print ( "Please enter your BMR: " );
    int bmr = keyboardInput.nextInt();
    System.out.print ( "Please enter your Gender (M/F): " );
    String gender = keyboardInput.next();

    if ( ( gender.equalsIgnoreCase ( "M" ) || gender.equalsIgnoreCase ( "F" ) ) )
    {
      gender = gender.toUpperCase();

      System.out.println ( "Select your Activity Level" );
      System.out.println ( "[0] Resting (Sleeping, Reclining)" );
      System.out.println ( "[1] Sedentary (Minimal Movement)" );
      System.out.println ( "[2] Light (Sitting, Standing)" );
      System.out.println ( "[3] Moderate (Light Manual Labor, Dancing, Riding Bike)" );
      System.out.println ( "[4] Very Active (Team Sports, Hard Manual Labor)" );
      System.out.println ( "[5] Extremely Active (Full-time Athlete, Heavy Manual Labor)" );
      System.out.print ( "\nEnter the letter corresponding to your activity level: " );
      int menuchoice = keyboardInput.nextInt();

      if ( ( menuchoice = = 0 ) && ( gender.equals ( "M" ) ) )
      {
        System.out.print ( menuchoice );
        System.out.println ( gender );
      }
      else if ( ( menuchoice = = 0 ) && ( gender.equals ( "F" ) ) )
      {
        System.out.print ( menuchoice );
        System.out.println ( gender );
      }
      else if ( ( menuchoice = = 1 ) && ( gender.equals ( "M" ) ) )
      {
        System.out.print ( menuchoice );
        System.out.println ( gender );
      }
      else if ( ( menuchoice = = 1 ) && ( gender.equals ( "F" ) ) )
      {
        System.out.print ( menuchoice );
        System.out.println ( gender );
      }
      else if ( ( menuchoice = = 2 ) && ( gender.equals ( "M" ) ) )
      {
        System.out.print ( menuchoice );
        System.out.println ( gender );
      }
      else if ( ( menuchoice = = 2 ) && ( gender.equals ( "F" ) ) )
      {
        System.out.print ( menuchoice );
        System.out.println ( gender );
      }
      else if ( ( menuchoice = = 3 ) && ( gender.equals ( "M" ) ) )
      {
        System.out.print ( menuchoice );
        System.out.println ( gender );
      }
      else if ( ( menuchoice = = 3 ) && ( gender.equals ( "F" ) ) )
      {
        System.out.print ( menuchoice );
        System.out.println ( gender );
      }
      else if ( ( menuchoice = = 4 ) && ( gender.equals ( "M" ) ) )
      {
        System.out.print ( menuchoice );
        System.out.println ( gender );
      }
      else if ( ( menuchoice = = 4 ) && ( gender.equals ( "F" ) ) )
      {
        System.out.print ( menuchoice );
        System.out.println ( gender );
      }
      else if ( ( menuchoice = = 5 ) && ( gender.equals ( "M" ) ) )
      {
        System.out.print ( menuchoice );
        System.out.println ( gender );
      }
      else if ( ( menuchoice = = 5 ) && ( gender.equals ( "F" ) ) )
      {
        System.out.print ( menuchoice );
        System.out.println ( gender );
      }
      else
      {
        System.out.println ( "I'm sorry. You entered an invalid menu choice." );
      }
    }
    else
    {
      System.out.println ( "I'm sorry. You entered an incorrect gender." );
    }

  }
}

Which would make sense since it appears to be the first instance where the = = is found.

Reply to this topic

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.

DrTsus 0 Newbie Poster · Answer 1 · 2007-11-17T08:36:32+00:00

It's not the = = because == has the same error. Any if statement there gives me the same error.

jwenting 1,889 duckman Team Colleague · Answer 2 · 2007-11-17T12:17:01+00:00

yes, the "= =" IS wrong. You see it on all your if statements because you do it on all of them...

jwenting 1,889 duckman Team Colleague · Answer 3 · 2007-11-17T12:19:20+00:00

of course another thing to consider is the fact that your design is extremely bad.
Such long lists of if-else blocks is an almost certain sign of something that's done wrong, especially when (like you're doing) what happens inside those blocks is (almost) identical.

DrTsus 0 Newbie Poster · Answer 4 · 2007-11-17T18:57:14+00:00

The assignment is to use if else blocks. And I haven't put the real stuff in the if-else blocks yet. I just did that to make sure it's working. But obviously its not. And how many times do I have to say it. The = = is NOT breaking the program (though it may be wrong). It's something else. In that case it would say illegal operator, not illegal start of an expression.

jwenting 1,889 duckman Team Colleague · Answer 5 · 2007-11-17T19:36:19+00:00

Kid, that "= =" IS the problem.
At least it's the problem that prevents the code you posted from compiling.

There are quite possibly more problems in the stuff you didn't post (if any), but that's certainly wrong.

And your idea that it would give you another error if it were wrong is wrong as well.

DrTsus 0 Newbie Poster · Answer 6 · 2007-11-17T19:46:41+00:00

For the love of god, I had it the other way before and it didn't compile. I deleted the whole block and tried putting an if statement there and it didn't work.

...

This is f******* retarded. It did not work at school but it decides to work on the slightly-better computer at home. Fuck. You were right. Sorry.

iamthwee · Answer 7 · 2007-11-17T21:41:41+00:00

No, = = didn't work at school or home. It was always wrong...

Next time listen to the experts, (i.e. us) and your problems will be solved more quickly.