Question
What regex pattern should I use with java.lang.String.split() to divide a String into an Array of substrings using all whitespace characters like space, tab, and newline as delimiters?
String[] result = input.split("\\s+");
Answer
In Java, you can easily split a string into an array using various delimiters, including whitespace characters such as spaces, tabs, and newlines. The regex pattern used in the `String.split()` method is crucial for achieving this separation.
String[] substrings = input.split("\\s+"); // Splits input at all whitespace occurrences.
Causes
- Understanding the complexities of whitespace characters in text processing.
- Creating a unified regex pattern that captures all whitespace variants.
Solutions
- Utilize the regex pattern `\s+` in `String.split()` method.
- The `\s` matches any whitespace character (space, tab, line feed, etc.) and `+` indicates one or more occurrences.
Common Mistakes
Mistake: Using a single whitespace character as a delimiter.
Solution: Use the regex pattern `\s+` instead of spaces to handle multiple whitespace characters.
Mistake: Forgetting to escape backslashes in regex expressions.
Solution: Use double backslashes `\\` in Java strings to ensure correct regex parsing.
Helpers
- Java String split
- regex whitespace delimiter
- Java split string
- String.split regex
- whitespace characters Java
