Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
469 views
in Technique[技术] by (71.8m points)

java.util.scanner - Java - Using multiple delimiters in a scanner

I'm using a scanner to take input and, hopefully, split it into chunks. I want it to split it up using whole word delimiters. So right now I have:

    Scanner scanner = new Scanner("1 imported bottle of perfume at 27.99");
    scanner.useDelimiter("\sdelimitOne\s");

So with input "word word delimitOne word word delimitTwo word word" I get output:

word word
word word delimitTwo word word

I was hoping

    scanner.useDelimiter("\sdelimitOne\s\sdelimitTwo\s");

might work, but alas not.

How do I go about achieving the following output:

word word
word word
word word

?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

From wikipedia :

| : The choice (aka alternation or set union) operator matches either the expression before or the expression after the operator. For example, abc|def matches "abc" or "def".

so, scanner.useDelimiter("\sdelimitOne\s|\sdelimitTwo\s"); is what you need.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

1.4m articles

1.4m replys

5 comments

57.0k users

...