# circle

Program to test whether a given point lies inside a circle or not?

December 23, 2010 at 12:31 PM

Hi Friend,

Try the following code:

```import java.util.*;
public class CheckPoint{
public static void main(String[]args){
Scanner input=new Scanner(System.in);
System.out.print("Enter the radius of the circle : ");
double r = input.nextDouble();
System.out.println();
System.out.print("Enter x coordinate of the centre of circle : ");
double x1 = input.nextDouble();
System.out.print("Enter y coordinate of the centre of circle : ");
double y1 = input.nextDouble();
System.out.println();
System.out.print("Enter x coordinate of the point: ");
double x2 = input.nextDouble();
System.out.print("Enter y coordinate of the point: ");
double y2 = input.nextDouble();
double b=2;
double x=Math.pow(x2-x1,b);
double y=Math.pow(y2-y1,b);
System.out.println();
double check =Math.sqrt(x+y);
if (check < r){
System.out.println("Point lies inside the Circle");
}
else if (check == r){
System.out.println("Point lies on the Circle");
}
else{
System.out.println("Point lies outside the Circle");
}
}
}
```

Thanks

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