Java获取键盘输入

import java.io.*;

public class Demo {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("please input a string");
        String str = br.readLine();
        System.out.println(str);
    }
}

import java.util.Scanner;

public class Demo1 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("input your name");
        String name = sc.nextLine();
        System.out.println("input your age");
        int age = sc.nextInt();
        System.out.println("input you height");
        float height = sc.nextFloat();
        System.out.println("Your information: name:" + name + " age:" + age + " height:" + height); 
    }
}