Java Scanner字符串输入 [英] Java Scanner String input
问题描述
我正在编写一个使用Event类的程序，其中包含一个日历实例和一个String类型的描述。创建事件的方法使用扫描程序来获取月，日，年，小时，分钟和描述。我遇到的问题是Scanner.next（）方法只返回空格前的第一个单词。因此，如果输入是我的生日，则该事件实例的描述仅为我的。
I'm writing a program that uses an Event class, which has in it an instance of a calendar, and a description of type String. The method to create an event uses a Scanner to take in a month, day, year, hour, minute, and a description. The problem I'm having is that the Scanner.next() method only returns the first word before a space. So if the input is "My Birthday", the description of that instance of an Event is simply "My".
我做了一些研究，发现人们使用了Scanner。 nextLine（）针对这个问题，但是当我尝试这个时，它只是跳过输入应该去的地方。以下是我的代码的一部分：
I did some research and found that people used Scanner.nextLine() for this issue, but when I try this, it just skips past where the input should go. Here is what a section of my code looks like:
System.out.print("Please enter the event description: ");
String input = scan.nextLine();
e.setDescription(input);
System.out.println("Event description" + e.description);
e.time.set(year, month-1, day, hour, min);
addEvent(e);
System.out.println("Event: "+ e.time.getTime());
这是我得到的输出：
Please enter the event description: Event description
Event: Thu Mar 22 11:11:48 EDT 2012
它跳过空格以输入描述字符串，因此，描述（最初设置为空格 - ）永远不会更改。
It skips past the space to input the description String, and as a result, the description (which is initially set to a blank space - " "), is never changed.
我该如何解决这个问题？
How can I fix this?
推荐答案
当你读完时使用nextInt（）之类的年份日小时分钟，它会在解析器/缓冲区中留下其余部分（即使它是空白的），所以当你调用nextLine（）时，你正在读取第一行的其余部分。
When you read in the year month day hour minutes with something like nextInt() it leaves rest of the line in the parser/buffer (even if it is blank) so when you call nextLine() you are reading the rest of this first line.
我建议您在打印下一个提示之前调用scan.nextLine（）来丢弃剩下的行。
I suggest you call scan.nextLine() before you print your next prompt to discard the rest of the line.
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