PMD 规则集——Optimization Rules
<div class="contentBox"><div class="section"><a name="Optimization_Rules" />Optimization Rules优化规则
These rules deal with different optimizations that generally apply to performance best practices.<div class="subsection"><a name="LocalVariableCouldBeFinal" />LocalVariableCouldBeFinal
Since: PMD 2.2
局部变量只被赋值一次可以声明为final.
This rule is defined by the following Java class: net.sourceforge.pmd.rules.optimization.LocalVariableCouldBeFinal
例子：
public class Bar { public void foo() { String a = "a"; // if a will not be assigned again it is better to do this: final String b = "b"; }}
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