4 – Simple and easy Java program to calculate area

//always check name of class
import java.util.*;
//itvoyagers.in
class Area
{
    float a;
    public void area_Circle(float r)
    {
        a = r*r*3.14f;
        System.out.println("nArea of Circle is : "+a);
    }
    public void area_Square(float s)
    {
        a = s*s;
        System.out.println("nArea of Square is : "+a);
    }
//itvoyagers.in
    public void area_Rectangle(float l, float b)
    {
        a = l*b;
        System.out.println("nArea of Rectangle is : "+a);
    }
    public void area_Triangle(float b, float h)
    {
        a = b*h;
        System.out.println("nArea of Triangle is : "+a);
    }
}
//itvoyagers.in
class FindArea
{
    public static void main(String agr[])
    {
        float radius,side,length,breadth,base,height;
        Scanner in = new Scanner(System.in);
//you can accept values from user
        radius = 6;
        side = 10;
        length = 5;
        breadth = 12;
        base = 8;
        height = 7;

        Area area = new Area();
        area.area_Circle(radius);
        area.area_Square(side);
        area.area_Rectangle(length,breadth);
        area.area_Triangle(base,height);
    }
}