正则表达式：在两个单词之间捕获一个单词

Question

Let's say these are my inputs:

type Database xyz{ abc }

type Database { abc }

I want to capture just this in both the cases

Database

The pattern is:

"type" + any number of spaces + what i want + any number of spaces + any characters

I've this so far but I'm not sure how to match any character in look ahead. (?<=type)\\s+(.*)(?=)

Answer 1

I'm sure you don't need a lookbehind, because just matching and capturing the second word should work:

String input = "type Database xyz{ abc }";
Pattern pattern = Pattern.compile("type\\s+(.*?)\\s+.*");
Matcher matcher = pattern.matcher(input);
while (matcher.find()) {
    System.out.println(matcher.group(1));
}

That finds the word and prints

Type: Database