Java – Program To Calculate Distance Between Two Points

 

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

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:

import java.lang.Math.*;
class DistanceBetweenPoints
{
	public static void main(String arg[])	
	{
            int x1,x2,y1,y2;
	    double distance;
	    x1=1;y1=1;x2=4;y2=4;
	    distance=Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1));	 	    
            System.out.println("distance between"+"("+x1+","+y1+"),"+"("+x2+","+y2+") : "+distance);
	}
}

Taking input through scanner class

import java.util.Scanner;
class DistanceBetweenPoints
{
	public static void main(String arg[])
	
	{
	
             	 int x1,x2,y1,y2;
 
	         double distance;
	
	         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 x2 point");
	   
                 x2=sc.nextInt();
 
	         System.out.println("Enter y2 point");
	   
                 y2=sc.nextInt();
	  	    
		 distance=Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1));
 	 	    	 	    
  	         System.out.println("distance between"+"("+x1+","+y1+"),"+"("+x2+","+y2+") : "+distance);
 
	}
 
}

Taking inputs through command line arguments.

import java.util.Scanner;
class DistanceBetweenPoints
{
	public static void main(String args[])
	
	{     	long x1,x2,y1,y2;
 
		double distance;
 
                x1=Long.parseLong(args[0]);
		
                y1=Long.parseLong(args[1]);
 
	        x2=Long.parseLong(args[2]);
		
                y2=Long.parseLong(args[3]); 
		     
	        distance=Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1));
 	 	        
  	        System.out.println("distance between"+"("+x1+","+y1+"),"+"("+x2+","+y2+") : "+distance);
 
	}
}