用户在Java中输入字符串和整数 [英] user input string and integers in Java

问题描述

    System.out.print("Name : ");
    String name = in.nextLine();

    System.out.print("Age : ");
    int age = in.nextInt();

    System.out.print("City : ");
    String city = in.nextLine();

输出将为：

名称：test

年龄：20

建立成功

当我调试它们时，它不会读取city的用户输入。但是当我将age的数据类型更改为string时，它将会读取。如何通过系统读取城市的用户输入，将年龄的数据类型保持为int？

when i debug them, it won't read the user input for "city" . but when i changed the data type for "age" to string, it will read. how can i kept the data type of age to int with the system reading the user inputs for city ?

推荐答案

由于读取年龄后缓冲区中仍有新行字符，请将其更改为..

As there is still a new line character in the buffer after reading the age, change it to..

System.out.print("Name : ");
String name = in.nextLine();

System.out.print("Age : ");
int age = in.nextInt();
//add
in.nextLine();

System.out.print("City : ");
String city = in.nextLine();

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