java8--方法--String--格式化--format

1.程序：

package InputTest;


import java.util.Scanner;

public class InputTest021227 {
    public static void main(String[] args) {
//        English();
        Chiness();
    }

    public static void English(){

            Scanner in = new Scanner(System.in);

            System.out.print("What is your name?");
            String name = in.nextLine();

            System.out.print("How old are you?");
            int age = in.nextInt();

            String message = String.format("Hello, %s. Next year, you'll be %d",name,(age + 1));
            System.out.printf(message);

    }
    public static void Chiness(){

        Scanner in = new Scanner(System.in);

        System.out.print("请输入你的姓名：");
        String 姓名 = in.nextLine();

        System.out.print("请输入你的年龄：");
        int 年龄 = in.nextInt();

        String message = String.format("你好, %s. 你明年%8.2f岁",姓名,(float)(年龄 + 1));
        System.out.printf(message);
    }

}

英文运行效果图：

中文运行效果图：

2简化版

String name = "Cay";
int age = 56;
message = String.format("hello, %s . Next year you will be %d",name,(age+1));
System.out.println(message);

name = "李一";
age = 20;
message = String.format("你好, %s . 你明年%d岁",name,(age+1));
System.out.println(message);

效果图：