Java program to calculate area of Triangle

Java program to calculate area of Triangle


Here we will see how to calculate area of triangle. We will see two following programs to do this:
1) Program 1: Prompt user for base-width and height of triangle.
2) Program 2: No user interaction: Width and height are specified in the program itself.
Program 1:
/**
* @author: BeginnersBook.com
* @description: Program to Calculate area of Triangle in Java
* with user interaction. Program will prompt user to enter the
* base width and height of the triangle.
*/

import java.util.Scanner;
class AreaTriangleDemo {
public static void main(String args[]) {
Scanner scanner = new Scanner(System.in);

System.out.println("Enter the width of the Triangle:");
double base = scanner.nextDouble();

System.out.println("Enter the height of the Triangle:");
double height = scanner.nextDouble();

//Area = (width*height)/2
double area = (base* height)/2;
System.out.println("Area of Triangle is: " + area);
}
}
Output:
Enter the width of the Triangle:
2
Enter the height of the Triangle:
2
Area of Triangle is: 2.0
Program 2:
/**
* @author: BeginnersBook.com
* @description: Program to Calculate area of Triangle
* with no user interaction.
*/

class AreaTriangleDemo2 {
public static void main(String args[]) {
double base = 20.0;
double height = 110.5;
double area = (base* height)/2;
System.out.println("Area of Triangle is: " + area);
}
}
Output:
Area of Triangle is: 1105.0

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