How to Parse a String in Java

2024-07-16 12:47| 来源: 网络整理| 查看: 265

Use the split Method to Parse a String in Java Use the Scanner Class to Parse a String in Java Use the StringUtils Class to Parse a String in Java Use the StringTokenizer Class to Parse a String in Java Use parse to Parse a String in Java Use Regular Expressions (Regex) to Parse a String in Java Conclusion

String parsing, the process of extracting specific information from a string, is a common and essential task in Java programming. Java offers a variety of tools and techniques for parsing strings, ranging from simple methods like split to more sophisticated approaches using regular expressions.

In this article, we’ll explore various methods to parse strings in Java.

Use the split Method to Parse a String in Java

One powerful tool for string parsing in Java is the split method. This method is part of the String class and is particularly useful when you need to break down a string into smaller components based on a specified delimiter.

Syntax of the split method:

String[] result = inputString.split(regex);

Here, inputString is the original string you want to parse, and regex is the regular expression used as the delimiter. The method returns an array of substrings resulting from the split operation.

How the split method works is it divides the original string wherever it encounters a match for the specified regular expression. It then returns an array containing the substrings between those matches.

Let’s consider a scenario where we have a date represented as a string in the format MonthDayYear, and we want to extract the components鈥攖he month and the day with the year.

public class StringParsingExample { public static void main(String[] args) { String dateString = "March032021"; String[] dateComponents = dateString.split("(?

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