Konsep PBO Objek dan Class Bag-3

//--------------------

//finalWord.java

//--------------------

package ObjekDanClass;

public class finalWord {

    final double phi = 3.14;

    double kelilingLingkaran(double jari) {
        double keliling;
        keliling = 2 * phi * jari;
        return keliling;
    }

    double luasLingkaran(double jari) {
        double luas;
        luas = phi * jari * jari;
        return luas;
    }
}

//--------------------------------------------------------

//--------------------

//pengujian.java

//--------------------

package ObjekDanClass;

public class pengujian {

    public static void main(String args[]) {
        finalWord o = new finalWord();
        System.out.println("keliling " + o.kelilingLingkaran(2));
        System.out.println("luas " + o.luasLingkaran(3));
    }
}

//--------------------

//output

//--------------------

keliling 12.56
luas 28.259999999999998
BUILD SUCCESSFUL (total time: 0 seconds)