<Git> AreaTest.java

package ch01_variable_operator;

public class AreaTest {

    public static void main(String[] args) {

        double radius;
        double area;
        double PI;

        radius = 10.0;
        PI = 3.14;

        area = PI * radius * radius ;

        System.out.print("반지름이" + radius + "일 때");
        System.out.println("\n원의 면적은" + area + "입니다.");

    }
}

cf) Myjava/AreaTest.java at master · nolooker/Myjava (github.com)