Java Program To Calculate Distance Between Two Points | 3 Ways

Java program to calculate distance between two points. The code has been written in five different formats using standard values, taking inputs through scanner class, command line arguments, while loop and , do while loop, creating a separate class. If you nay doubts related to the information that we shared do leave a comment here at the end of the post.

How to calculate distance between two points ?

The distance between two points formula derived from the Pythagorean Theorem.

What is the formula to find distance between two points ?

A: Here is the formula to find the distance between two points:

To find the distance between two points (x₁,y₁) and (x₂,y₂), all that you need to do is use the coordinates of these ordered pairs and apply the formula pictured below.

source

1.Java Program using standard values

There you go formula based program with sample output.

import java.lang.Math.*;

class DistanceBwPoint

{

public static void main(String arg[])

{

int x1,x2,y1,y2;

double dis;

x1=1;y1=1;x2=4;y2=4;

dis=Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1));

System.out.println("distancebetween"+"("+x1+","+y1+"),"+"("+x2+","+y2+")===>"+dis);

}

output:

1	distancebetween(1,1),(4,4)===>4.242640687119285

2. Taking inputs through scanner class

Sample code #2 : Taking inputs through scanner class.

import java.util.Scanner;

class DistanceBwPoint

{

public static void main(String arg[])

{

int x1,x2,y1,y2;

double dis;

Scanner sc=new Scanner(System.in);

System.out.println("enter x1 point");

x1=sc.nextInt();

System.out.println("enter y1 point");

y1=sc.nextInt();

System.out.println("enter x2point");

x2=sc.nextInt();

System.out.println("enter y2 point");

y2=sc.nextInt();

dis=Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1));

System.out.println("distancebetween"+"("+x1+","+y1+"),"+"("+x2+","+y2+")===>"+dis);

}

output:

Output:1

C:\Users\goutham\Desktop\E>java DistanceBwPoint

enter x1 point

enter y1 point

enter x2point

enter y2 point

distancebetween(1,2),(1,2)===>0.0

Output:2

C:\Users\goutham\Desktop\E>java DistanceBwPoint

enter x1 point

enter y1 point

enter x2point

enter y2 point

distancebetween(4,4),(1,1)===>4.242640687119285

Output:3

C:\Users\goutham\Desktop\E>java DistanceBwPoint

enter x1 point

enter y1 point

enter x2point

enter y2 point

distancebetween(5,3),(2,3)===>3.0

3. Using command line arguments

Taking inputs through command line arguments . Do check it out compete guide on command line arguments here.

import java.util.Scanner;

class DistanceBwPoint

{

public static void main(String args[])

{ long x1,x2,y1,y2;

double dis;

x1=Long.parseLong(args[0]);

y1=Long.parseLong(args[1]);

x2=Long.parseLong(args[2]);

y2=Long.parseLong(args[3]);

dis=Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1));

System.out.println("distancebetween"+"("+x1+","+y1+"),"+"("+x2+","+y2+")===>"+dis);

}

output:

Output:1

C:\Users\goutham\Desktop\E>javac DistanceBwPoint.java

C:\Users\goutham\Desktop\E>java DistanceBwPoint 1 1 1 1

distancebetween(1,1),(1,1)===>0.0

Output:2

C:\Users\goutham\Desktop\E>java DistanceBwPoint 11 5 12 5

distancebetween(11,5),(12,5)===>1.0

Output:3

C:\Users\goutham\Desktop\E>java DistanceBwPoint 11 11 5 5

distancebetween(11,11),(5,5)===>8.48528137423857

Output:4

C:\Users\goutham\Desktop\E>java DistanceBwPoint 100 4 200 5

distancebetween(100,4),(200,5)===>100.00499987500625

4. User Define Method

By using user define method.

import java.util.Scanner;

class DistanceBwPoint

{

public static void main(String args[])

{

int x1,x2,y1,y2;

double dis;

Scanner sc=new Scanner(System.in);

System.out.println("enter x1 point");

x1=sc.nextInt();

System.out.println("enter y1 point");

y1=sc.nextInt();

System.out.println("enter x2point");

x2=sc.nextInt();

System.out.println("enter y2 point");

y2=sc.nextInt();

dis=DistanceBwPoint.calDis(x1,y1,x2,y2);

System.out.println("distancebetween"+"("+x1+","+y1+"),"+"("+x2+","+y2+")===>"+dis);

}

static double calDis(int x1,int y1,int x2,int y2)

{

return (Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1)));

}

output:

enter x1 point

enter y1 point

enter x2point

enter y2 point

distancebetween(1,2),(3,4)===>2.8284271247461903

5. Creating a separate class

Through creating a separate class( ) and taking inputs through scanner class.

import java.util.Scanner;

class CalDis

{

double dis;

CalDis(int x1,int y1,int x2,int y2)

{

dis=(Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1)));

}

class DistanceBwPoint

{

public static void main(String args[])

{

int x1,x2,y1,y2;

Scanner sc=new Scanner(System.in);

System.out.println("enter x1 point");

x1=sc.nextInt();

System.out.println("enter y1 point");

y1=sc.nextInt();

System.out.println("enter x2point");

x2=sc.nextInt();

System.out.println("enter y2 point");

y2=sc.nextInt();

CalDis cd=new CalDis(x1,y1,x2,y2);

System.out.println("distancebetween"+"("+x1+","+y1+"),"+"("+x2+","+y2+")===>"+cd.dis);

}

output:

enter x1 point

enter y1 point

enter x2point

enter y2 point

distancebetween(11,5),(6,5)===>5.0