How to match "any character" in regular expression?

To match "any character" in a regular expression, you can use the . (dot) character. The . character matches any single character, except for a newline.

For example, the regular expression "a.c" will match the following strings:

• "abc"
• "aac"
• "a1c"
• "a#c"

Here's an example of how you can use the . character to match any character in a regular expression:

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
  public static void main(String[] args) {
    // Create a pattern
    Pattern p = Pattern.compile("a.c");

    // Create a matcher
    Matcher m = p.matcher("abc");

    // Check if the matcher matches the pattern
    if (m.matches()) {
      System.out.println("Match found!");
    } else {
      System.out.println("Match not found.");
    }
  }
}

This code will print "Match found!" because the string "abc" matches the pattern "a.c".

I hope this helps! Let me know if you have any other questions.