Program to find Area of Triangle in JAVA

Program Code:

//Program to find area of triangle.

public class AreaoftrianglePFS
{

public static void main(String[] args)
{
double area,s1,s2,s3,s;
s1=30;
s2=40;
s3=50;
s=(s1+s2+s3)/2;
area=Math.sqrt(s*(s-s1)*(s-s2)*(s-s3));
System.out.println(“Area of Triangle = “+ area);

}

}

Output :

Screenshot (7).png

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Program to find Area of Circle in java.

Program Code:

// Program to find the area of circle.
public class AreaofcirclePFS
{

public static void main(String[] args)
{
double circle_radius=20;        //Radius Given
double pi=3.14159;                //Value of PI
double circle_area=pi*circle_radius*circle_radius;
System.out.println(“\n Area of Circle is = “+ circle_area);

}

}

Output:

Screenshot (6).png

Writing and Running Your Program in Java

1.Launch or Run  Eclipse.

2. Go to Eclipse Eclipse menu bar,choose File⇒New⇒Java Project

A New Java Project dialog box appears

3.In the New Java Project Dialog box,type a name for your new project and then click Finish.                                                          Screenshot (3).png

4.Select your project in the Package Explorer.

5.From  Eclipse’s main menu,choose File⇒New⇒Class    

6.In the New Java Class Dialog box Name field,type the name of your new class.  

  Put a check mark in the public static void main(String[]args) checkbox.   

7.Click Finish.                                                                              

 

Screenshot (5)