Here are some references that summarize the differences. So if you take an arbitrary JavaScript regex and transliterate it to Java (as above) it might not work. However as notes, there are various differences between the regex languages implemented by Java and JavaScript. Just remember that you are using a Java string literal to express the regex.
This is a bit confusing / daunting for Java novices, but it is totally logical. (And if you have a literal backslash character in the regex, you end up with '\\\\' in the Java string literal!!) Json2CSharp is a free parser and converter that will help you generate Java classes from a JSON object and. But '\' is the escape character in a Java string literal, so each '\' in the original regex has to be escaped with a 2nd '\'. Convert any JSON to POJO objects in Java online. Instead, they are (typically) expressed using Java string literals. Welcome to the free online Java to JS converter. Unlike, JavaScript, Perl and other scripting languages, Java doesn't have a special syntax for regexes. Open TOOLS -> Code Generator (LANGUAGE - Java)Įven though it isn't hardcore programmer way, it is significantly less error-prone.Įspecially if you need to convert only one or two expressions.Ĭhange the leading and trailing '/' characters to ''', and then replace each '\' with '\\'.
You can use online regex evaluators like for conversion.
