Question

(Center of a triangle) In Java, write the following method that returns the center of a triangle:

(MAKE SURE TO USE THIS METHOD) public static Point getCenterPoint(Point p1, Point p2, Point p3);

Write a test program that prompts the user to enter three points and displays the center point.

Here is a sample run: (Hint: Use what you created for the previous problem).

Enter x1, y1, x2, y2, x3, y3: 2.5 2 5 -1.0 4.0 2.0

The center point is at (3.8333333333333335, 1.0)

Answer 1

Point.java

public class Point {
    private double p1;
    private double p2;

    public double getP1() {
        return p1;
    }

    public void setP1(double p1) {
        this.p1 = p1;
    }

    public double getP2() {
        return p2;
    }

    public void setP2(double p2) {
        this.p2 = p2;
    }
    
    
}

Driver Class

Centroid.java

import java.util.Scanner;

public class Centroid {
    public static Point getCenterPoint(Point p1, Point p2, Point p3){
        Point p = new Point();
        double x = (p1.getP1() + p2.getP1() + p3.getP1()) / 3;
        double y = (p1.getP2() + p2.getP2() + p3.getP2()) / 3;
        
        p.setP1(x);
        p.setP2(y);
        
        return p;
    }
    public static void main(String[] args) {
        Point p1 = new Point();
        Point p2 = new Point();
        Point p3 = new Point();
        Point p4 = new Point();
        Scanner sc = new Scanner(System.in);
        
        System.out.println("Enter x1 and y1");
        p1.setP1(sc.nextDouble());
        p1.setP2(sc.nextDouble());
        
        System.out.println("Enter x2 and y2");
        p2.setP1(sc.nextDouble());
        p2.setP2(sc.nextDouble());
        
        System.out.println("Enter x3 and y3");
        p3.setP1(sc.nextDouble());
        p3.setP2(sc.nextDouble());
        
        p4 = getCenterPoint(p1, p2, p3);
        System.out.println("Center Point = " + p4.getP1() + ", " + p4.getP2());
    }
}

Output:-

Make sure to put the two files in the same package.

Note:- Please comment if you face any problem. :)