public class Calculator { private int a; private int b; // 默认构造器,初始化变量 public Calculator(){ this.a = 0; this.b = 0; } //重载 public Calculator(int a, int b) { this a = a; this b = b; }
//加法 public int add(){ return a + b; }
//减法 public int miner(){ return a - b; }
//乘法 public int multiply() { return a * b; }
public int divide () { return a / b; } }
public class Main { public static void Main(String[] args) { Calculator c = new Calculator(10,20); System.out.println(c.add); System.out.println(c.miner); System.out.println(c.multiply); System.out.println(c.divide ); } }