Code

   
    /// Name: Afaf Nabeeha
    /// Period: 7
    /// Program Name: BMI Categories
    /// File Name: BMI.java
    /// Date Finished: 11/18/2015 public class BMI

          import java.util.Scanner;
          public class BMI
          {
              public static void main( String[] args )
              {
                  Scanner keyboard = new Scanner(System.in);
                  double M, Kg, BMI;
                  String category;
                  category = "a";
                  System.out.print( "Your height in M: " );
                  M = keyboard.nextDouble();
                  System.out.print( "Your weight in Kg: " );
                  Kg = keyboard.nextDouble();
                  System.out.println();
                  BMI = Kg / (M*M);
                  System.out.println( "Your BMI is " + BMI );
                  if ( BMI < 18.5 )
                  {
                      category = "underweight";
                  }
                  if (( BMI >= 18.5 ) && ( BMI <= 24.9 ))
                  {
                      category = "normal weight";
                  }
                  if (( BMI >= 25.0 ) && ( BMI <= 29.9 ))
                  {
                      category = "over weight";
                  }
                  if ( BMI >= 30.0 )
                  {
                      category = "obese";
                  }
                  System.out.println( "BMI Category: " + category );
              }
          }
                      
    
Picture of the output