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
Saurabh Yadav says
*
* *
* * *
* * * *
* * * * *
completely coding
chinna says
package coreJava;
/**
* @author Narayana
*
*/
public class Triangle {
public static void main(String[] args) {
int n=5;
for (int i=1;i<=n ;i++ ){
for (int j=1;j<=i ;j++ ){
System.out.print("*");
}
System.out.println( );
}
}
}