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);
}
}