Question

Java language.

1. write a conversion method that have 2 parameter 1. feet and 2. inches(as small as 1/8 inch)(make sure precondition, can't be smaller than 1/8 inch)

and give output as feet in decimal place.

2 Write a method to calculate the area of a rectangle that take in width and height (feet) (as small as 1/8 inch)(make sure precondition, can't be smaller than 1/8 inch) and round up to the closet feet.

Write test cases for both method in J unit (including precheck the precondition (as small as 1/8 inch))

Answer 1

JAVA CODE:

package ideone;
import java.util.*;
import java.lang.*;
import java.io.*;

class Ideone
{
   //method to convert feets and inches to feets
   static double feet(double feets,double inch)
   {
       //if inches is less than 1/8 then precondition is not satisfied
       if(inch < 0.125){
           System.out.println("Precondition not satisfied.");
           return 0;
       }
       //returning answer by converting inches into feet and adding it into the given feets
       return feets + inch*0.0833333;
   }
  
   //method to calculate area of rectangle
   static double area(double height,double width)
   {
       //if either height or width of rectangle is less than 1/8 inches(which is equal to 0.01041667 feets).
       if(width < 0.01041667 || height < 0.01041667){
           System.out.println("Precondition not satisfied.");
           return 0;
       }
       //returning area of rectangle i.e height * width
       return width*height;
   }
   public static void main (String[] args) throws java.lang.Exception
   {
       //TEST CASE 1
       double test_feet1=5.00,test_inches1=0.345;
       double test_height1=.65,test_width1=0.345;
      
      
      
       if((int)feet(test_feet1,test_inches1)!=0.00){
          
           System.out.println("Test Case 1(FEET) :");
           System.out.println("feet = 5.00 , inches = 0.345 ");
           System.out.println("Feets in decimal places : "+ feet(test_feet1,test_inches1));
       }
       if(area(test_height1,test_width1)!=0.00){
          
           System.out.println("Test Case 1(AREA) :");
           System.out.println("height = .65 , width = 0.345 ");
           System.out.println("Area in decimal places : "+ area(test_height1,test_width1));
       }
       System.out.println("");
      
      
       //TEST CASE 2
       double test_feet2=8.535,test_inches2=0.098;
       double test_height2=.65,test_width2=0.01005;
      
      
       System.out.println("Test Case 2(FEET) :");
       System.out.println("feet = 8.535 , inches = 0.098 ");
       if(feet(test_feet2,test_inches2)!=0.00){
           System.out.println("Feets (in decimal places) : "+ feet(test_feet2,test_inches2));
       }
      
      
       System.out.println("Test Case 2(AREA) :");
       System.out.println("height = .65 , width = 0.01005 ");
       if(area(test_height2,test_width2)!=0.00){
           System.out.println("Area (in decimal places) : "+ area(test_height2,test_width2));
       }
      
   }
}

CODE SCREENSHOT:

OUTPUT: