如何在java中使用单个扫描程序类对象一个接一个地获取多个输入？[副本]

Question

 System.out.println("Enter the topicname and description");
            Scanner sc = new Scanner(System.in);
            System.out.println("Topic: ");
            String topic = sc.next();
            System.out.println("Description: ");
            String desc = sc.nextLine();
            System.out.println("The topic name you entered is: " + topic + " The description you entered is: " + desc);
            sc.close();

输出为：输入主题名称和描述主题：A描述：您输入的主题名称为：A您输入的描述为：

Answer 1

>

使用print而不是println看起来更漂亮

使用nextLine（）代替Next（）

public static void main(String[] args) {
    System.out.println("Enter the topicname and description");
    Scanner sc = new Scanner(System.in);
    System.out.print("Topic: ");
    String topic = sc.nextLine();
    System.out.print("Description: ");
    String desc = sc.nextLine();
    System.out.println("The topic name you entered is: " + topic + " The description you entered is: " + desc);
    sc.close();
}

或仅使用next（）

public static void main(String[] args) {
    System.out.println("Enter the topicname and description");
    Scanner sc = new Scanner(System.in);
    System.out.print("Topic: ");
    String topic = sc.next();
    System.out.print("Description: ");
    String desc = sc.next();
    System.out.println("The topic name you entered is: " + topic + " The description you entered is: " + desc);
    sc.close();
}

Answer 2

只需替换sc.nextLine（）；whitsc.next（）；

输出：

Enter the topicname and description
Topic: 
test
Description: 
test_description
The topic name you entered is: test The description you entered is: test_description

如果有帮助的话，现在请告诉我。

Answer 3

sc.nextLine（）方法用于将扫描仪推进当前行，并返回跳过的输入。

而不是：

String desc=sc.nextLine（）；

使用：

String desc=sc.next（）；

希望有帮助！：D