java之scanner操作

实现用户与键盘交互，接收键盘数据

scanner.next()识别到内容后，空格后内容就不接受

package com.sund.scanner;

import java.util.Scanner;

public abstract class Demo01 {
    public static void main(String[] args) {
        //从键盘接收数据
        Scanner scanner = new Scanner(System.in);

        System.out.println("请输入:");

        String  str = scanner.next();

        System.out.println("输出的内容是：" +str);
        //请输入:
        //hello world!
        //输出的内容是：hello
        scanner.close();
    }



}

scanner.nextLint()接收所有内容

package com.sund.scanner;

import java.util.Scanner;

public class Demo02 {
    public static void main(String[] args) {
        //从键盘接收数据
        Scanner scanner = new Scanner(System.in);

        System.out.println("请输入:");

        String str = scanner.nextLine();

        System.out.println("输出内容为:" + str);
        //请输入:
        //hello world!
        //输出内容为:hello world!
        scanner.close();
    }
}