實現簡易計算器，分別實現兩個整數、三個浮點數的加法運算

Counter類代碼：

package com.bdqn;

public class Counter {
    public void addCounter(int n, int m){
        System.out.println(n+m);
    }

    public void addCounter(double a ,double b,double c){
        System.out.println(a+b+c);
    }
}

CounterTest類代碼：

package com.bdqn;

public class CounterTest {
    public static void main(String[] args) {
        Counter c = new Counter();
        c.addCounter(1,2);
        c.addCounter(1.1,2.2,3.3);
    }
}

運行結果：