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Java - Two circles overlap or inside

I have a problem with my homework, and I have problems with the work of the last part. What am I doing wrong here? It will not print “Circle 2 overlaps circle 1”. or "Circle 2 does not overlap circle 1". The first two cases of printing. Here is the question:

Write a program (TwoCircles.java) in which the user enters the central coordinates and radii of two circles and determines the geometric relationship between them and prints one of the following messages: 1. Circle 1 is inside circle 2. 2. Circle 2 is inside circle 1. 3 Circle 2 overlaps circle 1. 4. Circle 2 does not overlap circle 1.

Here is what I have for my code:

import java.util.Scanner;
public class TwoCircles {
public static void main(String[] args){
    Scanner input = new Scanner(System.in);
    System.out.print("Enter Circle 1 center x-, y-coordinates, and radius: ");
    double X1 = input.nextDouble();
    double Y1 = input.nextDouble();
    double radius1 = input.nextDouble();
    System.out.print("Enter Circle 2 center x-, y-coordinates, and radius: ");
    double X2 = input.nextDouble();
    double Y2 = input.nextDouble();
    double radius2 = input.nextDouble();    

    double distance = Math.pow((X1 - X2) * (X1 - X2) + (Y1 - Y2) * (Y1 - Y2), 0.5);

    if (radius2 >= radius1){
        if (distance <= (radius2 - radius1))
            System.out.println("Circle 1 is inside Circle 2.");}
    else if (radius1 >= radius2){
        if (distance <= (radius1 - radius2))
            System.out.println("Circle 2 is inside Circle 1.");}
    else if (distance > (radius1 + radius2)){
        System.out.println("Circle 2 does not overlap Circle 1.");}
    else {
        System.out.println("Circle 2 overlaps Circle 1.");}
    }
}

Any guidance appreciated

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2 answers

:

import java.util.Scanner;
public class TwoCircles {
  public static void main(String[] args){
    Scanner input = new Scanner(System.in);
    System.out.print("Enter Circle 1 center x-, y-coordinates, and radius: ");
    double X1 = input.nextDouble();
    double Y1 = input.nextDouble();
    double radius1 = input.nextDouble();
    System.out.print("Enter Circle 2 center x-, y-coordinates, and radius: ");
    double X2 = input.nextDouble();
    double Y2 = input.nextDouble();
    double radius2 = input.nextDouble();    
    double distance = Math.pow((X1 - X2) * (X1 - X2) + (Y1 - Y2) * (Y1 - Y2), 0.5);
    if (radius2 >= radius1 && distance <= (radius2 - radius1)){
        System.out.println("Circle 1 is inside Circle 2.");
    }
    else if (radius1 >= radius2 && distance <= (radius1 - radius2) ) {
        System.out.println("Circle 2 is inside Circle 1.");
    }
    else if (distance > (radius1 + radius2)){
        System.out.println("Circle 2 does not overlap Circle 1.");
    }
    else {
        System.out.println("Circle 2 overlaps Circle 1.");}
    }
}

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+3

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    if (radius2 >= radius1) {
        if (distance <= (radius2 - radius1)) {
            System.out.println("Circle 1 is inside Circle 2.");
        }
    } else if (radius1 >= radius2) {
        if (distance <= (radius1 - radius2)) {
            System.out.println("Circle 2 is inside Circle 1.");
        }
    } else if (distance > (radius1 + radius2)) {
        System.out.println("Circle 2 does not overlap Circle 1.");
    } else {
        System.out.println("Circle 2 overlaps Circle 1.");
    }

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+1

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