Question

public static double[] getVolumes(double[] base, double[] height,
double[] length)

0. Write a Java program called TriangularPrisms which does the following: In the main method:

   1. Use a for loop which repeats three times. Within the loop,
      a. prompt the user to enter the base of the triangular prism and store the value in a

      double array called base
      b. prompt the user to enter the corresponding height and store the value in a double

      array called height
      c. prompt the user to enter the corresponding length and store the value in a double

      array called length

   2. Call the method getVolumes with the following header and body:

   1. Within a for loop, calculate the volume of each triangular prism using the values stored in the arrays, and store the volume in a double array called volume.

   2. Return the volume array at the end of the method.

Submit the java and class files via Canvas (as a single zip-file). Include a comment block at the top of

each Java file that includes your name, student id number, and “Lab 4-Spring 2020”.

3. Back in the main method, use a for loop to display the volume of each of the three triangular prisms.

Bring the working TriangularPrisms.java and TriangularPrisms.class files to your lab session for pre-lab credit.

Answer 1

import java.util.Scanner;

class TriangularPrisms {
public static void main(String[] args) {

Scanner s= new Scanner(System.in);

//double type arrays(of size 3) of base, height, length
double[] base, length, height;
base= new double[3];
length= new double[3];
height= new double[3];

//A for loop which will repeat 3 times
for(int i=0; i<3; i++){
System.out.println("\nTriangular Prism number "+(i+1));
//Prompting the user for base, height and length of triangular prism
System.out.print("Enter the base of the triangular prism: ");
base[i]= s.nextDouble();

System.out.print("Enter the corresponding height: ");
height[i]= s.nextDouble();

System.out.print("Enter the corresponding length: ");
length[i]= s.nextDouble();
}
//A double type array for storing volumes
double[] volume;
volume=getVolumes(base,height,length);
//Now displaying volumes of each triangular prism
for(int i=0; i<3; i++){
System.out.println("\nVolume of triangular prism number "+(i+1)+": "+volume[i]);
}
}
//Method for calculating the Volume of triangular prism
public static double[] getVolumes(double[] base, double[] height, double[] length){
//As formula of calculating volume of triangular prisms is (1/2 * base * height *length)
double[] volume= new double[3];

for (int i=0; i<3; i++){
//calculating volume
volume[i]= (1.0/2.0) * base[i] * height[i] *length[i];
}
//returning the volume(calculated) array
return volume;
}
}

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