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https://issues.apache.org/jira/browse/LANG-1057?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebb updated LANG-1057:
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Summary: Micro optimization: Replace StringBuilder with String
concatenation so that the compiler can better optimize the code (was: Micro
optimization: Replace StringBuilder with String concatination so that the
compiler can better optimize the code)
> Micro optimization: Replace StringBuilder with String concatenation so that
> the compiler can better optimize the code
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: LANG-1057
> URL: https://issues.apache.org/jira/browse/LANG-1057
> Project: Commons Lang
> Issue Type: Improvement
> Reporter: Benedikt Ritter
> Labels: github
>
> This is a placeholder issue for github PR
> https://github.com/apache/commons-lang/pull/36
> Some parts of our code base use StringBuilder for simple string
> concatination. But if one compare the generated byte code of:
> {code:java}
> String foo = "str1" + var + "str2"
> {code}
> with
> {code:java}
> String foo = StringBuilder().append("str1").append(var).append("str2)
> {code}
> it become apperent that the first is a bit more efficient. This is, because
> the compiler will generate the following as byte code:
> {code:java}
> String foo = StringBuilder("str1").append(var).append(str2)
> {code}
> Furthermore by using simple String concatination we leave the choise of how
> to concat the strings to compiler implementors, which may make the code more
> efficient when it is compiled on future compilers.
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