circle.java

import java.io.*;
class circle {
 
// function to print circle pattern
static void printPattern(int radius) {
 
 // dist represents distance to the center
 double dist;
 
 // for horizontal movement
 for (int i = 0; i <= 2 * radius; i++) {
 
 // for vertical movement
 for (int j = 0; j <= 2 * radius; j++) {
 dist = Math.sqrt((i - radius) * (i - radius) +
 (j - radius) * (j - radius));
 
 // dist should be in the range (radius - 0.5)
 // and (radius + 0.5) to print stars(*)
 if (dist > radius - 0.5 && dist < radius + 0.5)
 System.out.print("*");
 else
 System.out.print(" ");
 }
 
 System.out.print("\n");
 }
}
 
// Driver code
public static void main(String[] args)
{
 DataInputStream in=new DataInputStream(System.in);
 int radius = 6;
 printPattern(radius);
}
}