How to Properly Unescape Java String Literals, Handling All Escape Sequences?

How to Unescape a Java String Literal in Java?

The Problem

The need arises to extract string literals from Java source code and pass them to a function that accepts a plain string. Unescaping the string literal is crucial, meaning converting characters like n and \, among others, to their intended forms.

Available Functions for Unescaping Strings

• org.apache.commons.lang.StringEscapeUtils.unescapeJava()

However, this function has several limitations:

• Ignores null character representation (

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