How to Properly Split Strings Using a Dot (.) as a Delimiter in Java?

Splitting Strings with Dot Delimiters

In Java, the split() method can be used to divide a string into substrings based on a specified delimiter. However, the delimiter character (.) has a special meaning in regular expressions, where it matches any single character. Therefore, if you want to split a string on a dot, you need to escape it as shown in the following example:

String myFilename = "image.png";
String[] filenameParts = myFilename.split("\."); 

// Access the first part of the file name
String firstPart = filenameParts[0];

By escaping the dot with a backslash, we ensure that it is interpreted literally as the delimiter for splitting the string, rather than as a regular expression metacharacter. This allows us to split the file name into two parts, with the first part being the string before the dot.

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