java-03 方法

#############练习######################

1.键盘录入乘法表

import java.util.Scanner;
public class PrintNN {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        System.out.println("Please input a number:");
        int b = sc.nextInt();
        xingxing(b);
    }

    public static void xingxing(int a) {
        for (int i = 1; i <= a; i++) {
            for (int j = 1; j <= i; j++) {
                System.out.print(j+"*"+i+"="+i*j+"\t");

            }
            System.out.println();

        }

    }

}
结果：

Please input a number:
8
1*1=1
1*2=2 2*2=4
1*3=3 2*3=6 3*3=9
1*4=4 2*4=8 3*4=12 4*4=16
1*5=5 2*5=10 3*5=15 4*5=20 5*5=25
1*6=6 2*6=12 3*6=18 4*6=24 5*6=30 6*6=36
1*7=7 2*7=14 3*7=21 4*7=28 5*7=35 6*7=42 7*7=49
1*8=8 2*8=16 3*8=24 4*8=32 5*8=40 6*8=48 7*8=56 8*8=64

#######################方法重载和概述######################