@@ -0,0 +1,427 @@
+import java.io.BufferedReader;%0Aimport java.io.IOException;%0Aimport java.io.InputStreamReader;%0A%0Apublic class Main %7B%0A    public static void main(String args%5B%5D) throws IOException %7B%0A        InputStreamReader ir = new InputStreamReader(System.in);%0A        BufferedReader in = new BufferedReader(ir);%0A%0A        double n;%0A%0A        n = Double.parseDouble(in.readLine());%0A%0A        System.out.printf(%22A=%25.4f%5Cn%22, n * n * 3.14159);%0A    %7D%0A%7D%0A

Solve Area of a Circle in java