java - 如何获取Java用户输入？(How can I get the user input in Java?)

Question

I attempted to create a calculator, but I can not get it to work because I don't know how to get user input .

(我尝试创建一个计算器，但由于不知道如何获得用户输入而无法使它正常工作。)

How can I get the user input in Java?

(如何获取Java用户输入？)

  ask by Jtvd78 translate from so

Answer 1

One of the simplest ways is to use a Scanner object as follows:

(最简单的方法之一是使用Scanner对象，如下所示：)

import java.util.Scanner;

Scanner reader = new Scanner(System.in);  // Reading from System.in
System.out.println("Enter a number: ");
int n = reader.nextInt(); // Scans the next token of the input as an int.
//once finished
reader.close();