program to find the distance between two points

Question :program to find the distance between two points
 
Question From :
 Fathima Neethu
Malappuram 
fathimaneethu88@gmail.com
Answer:
 import java.io.*;
import java.lang.*;
import java.lang.Math;
import java.io.DataInputStream;
class Distance
{
    int x1,x2,y1,y2;
    void calculate()
    {
       
    try
    {
        DataInputStream in=new DataInputStream(System.in);
        System.out.println("Enter the coordinates : ");
        x1=Integer.parseInt(in.readLine());
        y1=Integer.parseInt(in.readLine());
        System.out.println("Enter the coordinates : ");
        x2=Integer.parseInt(in.readLine());
        y2=Integer.parseInt(in.readLine());
        System.out.println("Distance between the points : ");
        System.out.println(Math.sqrt(((x2-x1)*(x2-x1))+((y2-y1)*(y2-y1))));
}
catch(Exception e)
{
}

    }
}
class DistanceDemo
{
public static void main(String args[])
{
    Distance distance=new Distance();
    distance.calculate();
    }
}

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