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UnnecessaryWrapperObjectCreation

UnnecessaryWrapperObjectCreation

Most wrapper classes provide static conversion methods that avoid the need to create intermediate objects just to create the primitive forms. Using these avoids the cost of creating objects that also need to be garbage-collected later.
This rule is defined by the following Java class: net.sourceforge.pmd.lang.java.rule.optimizations.UnnecessaryWrapperObjectCreationRule
Example(s):



public int convert(String s) {
  int i, i2;

  i = Integer.valueOf(s).intValue(); // this wastes an object
  i = Integer.parseInt(s); 			 // this is better

  i2 = Integer.valueOf(i).intValue(); // this wastes an object
  i2 = i; // this is better

  String s3 = Integer.valueOf(i2).toString(); // this wastes an object
  s3 = Integer.toString(i2); 		// this is better

  return i2;
}