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'StringBuilder' can be replaced with 'String'

Reports usages of StringBuffer, StringBuilder, or StringJoiner which can be replaced with a single String concatenation.

Using String concatenation makes the code shorter and simpler.

This inspection only reports when the suggested replacement does not result in significant performance drawback on modern JVMs. In many cases, String concatenation may perform better.


StringBuilder result = new StringBuilder(); result.append("i = "); result.append(i); result.append(";"); return result.toString();

After the quick-fix is applied:

String result = "i = " + i + ";"; return result;

Inspection Details

Available in:

IntelliJ IDEA 2023.3, Qodana for JVM 2023.3


Java, 233.SNAPSHOT

Last modified: 13 July 2023