数据输入接收：

package com.fu;

import com.sun.org.apache.xpath.internal.SourceTree;

import java.util.Scanner;

/**
 * @auther 付强
 * @date 2020/2/12 - 11:27
 */
public class xindejava {

    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        System.out.println("请输入一个数据");
        if(scanner.hasNext()){
            System.out.println("输出"+scanner.next());
        }
        scanner.close();
    }
}