StringWriter vs StringBuilder given in simple terms for Beginner.
Even though, some string word is common in both of them (like Java and JavaScript), both are very different in their functionalities. We cannot compare them because both are very different from different packages.
1. StringWriter
StringWriter from java.io package is a stream class capable to write strings to a file.
2. StringBuilder
StringBuilder is a replacement to StringBuffer where data under operation is not critical. StringBuffer methods are synchronized where as StringBuilder methods not synchronized. All the methods of StringBuffer exist in StringBuilder. Using StringBuilder, a string can be manipulated like deleting or replacing a few characters etc.