Question

part A) using java methods calculate the area of rectangle.

part B) modify to calculate the area of rectangle, circle, triangle and square this time using switch statement, input validation, loop for choices and document the program.

Answer 1

part A) using java methods calculate the area of rectangle.

import java.util.*;
public class AreaOfRect{
public static double AREA(double LENTH, double WIDTH) // methods calculate the area of rectangle.
{
double AREA;
AREA=LENTH*WIDTH;
return AREA;
}
public static void main(String []args){
double len,wid,Area;
Scanner sc=new Scanner(System.in);
System.out.print("Enter length of rectangle: ");
len=sc.nextDouble();
System.out.print("Enter width of rectangle: ");
wid=sc.nextDouble();
Area= AREA(len, wid);
System.out.println("AREA OF RECTANGLE= " + Area);

}
}