class Triangle{
    int height;
    int base;
    void assignValue(int h, int b){
        height =h;
        base = b;
    }
    void calculateArea(){
        System.out.println("Area of Triangle is = "+height*base*1/2);
    }
}
public class TestTriangle{
    public static void main(String args[]){
        Triangle t1 = new Triangle();
        Triangle t2 = new Triangle();
        Triangle t3 = new Triangle();
        t1.assignValue(4,5);
        t2.assignValue(24,15);
        t3.assignValue(12,25);
        t1.calculateArea();
        t2.calculateArea();
        t3.calculateArea();
    }
}
