16、方法的重载

方法的重载

public class MethodDemo05 {
    public static void main(String[] args) {
        int add1 = add(1, 2);
        System.out.println(add1);
        System.out.println("==============");
        int add2 = add(1, 2, 3);
        System.out.println(add2);
        System.out.println("==============");
        double add3 = add(1.0, 2.0, 3.0);
        System.out.println(add3);
    }

    public static int add(int a,int b) {
        return a + b;
    }

    public static int add(int a,int b,int c) {
        return a + b + c;
    }

    public static double add(double a,double b,double c) {
        return a + b + c;
    }
}

命令行传参

​

public class MethodDemo06 {
    public static void main(String[] args) {
        for ( int i = 0; i < args.length; i++ ) {
            System.out.println("args[" + i + "]: " + args[i]);
        }
    }
}

cmd窗口：