regex-Java正则表达式匹配方括号

Question

Would someone kindly demonstrate what the regular expession would be for matching the square brackets?

I'm currently using java.util.regex .

For example, let's say we have the following line:

public static void main (String[] args) {

I need to match only the OPEN square bracket [ and next, the close square bracket ] .

I'm not saying I need to match the text between the square brackets.

I have tried with

[\\]]

and

\\]

Unfortunately, it matches the text as well and I need to match only [ or ] .

The weird thing is, when I try to match the { with [\\\\}] , it works!

Thoughts?

Answer 1

You can do it using:

    String text = "[This is the text]";

    String patternString = "\\[.*.\\]";

    Pattern pattern = Pattern.compile(patternString);

    Matcher matcher = pattern.matcher(text);

    System.out.println("Matcher? " + matcher.matches());

This return true if the text has a [ and ] and false if it doesn't

Hope this can help you. Thanks.