[LANG-1675] Improve performance of StringUtils.join for primitives.

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.13.0
• Assignee: Unassigned
• Reporter: Hubert Wojciechowski
• Created: 06/Oct/21 15:35
• Updated: 03/Apr/22 16:53
• Resolved: 03/Apr/22 16:53

Description

This is XenoAmess comment from PR:  https://github.com/apache/commons-lang/pull/784 

Please look at the sources in JDK, where java.lang.AbstractStringBuilder#append(boolean b)

In short, for basic types, should not convert them to String, but use StringBuilder directly, will bring far better performance.

BUT I just foundout that you did not bring this issue, this issue is already in commons-lang before your pr.

So I will not stop you from merging this in, but still I will find time to refactor the whole join serial functions later.