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code-style BooleanInversion (PMD)

Use bitwise inversion to invert boolean values - it's the fastest way to do this. See http://www.javaspecialists.co.za/archive/newsletter.do?issue=042&locale=en_US for specific details

  
public class Foo {
 public void main(bar) {
  boolean b = true;
  b = !b; // slow
  b ^= true; // fast
 }
}

      

Additional info can be found at this http://pmd.sourceforge.net/rules/controversial.html#BooleanInversion site.