resources.report.rules.pmd.UseArrayListInsteadOfVector.html Maven / Gradle / Ivy

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UseArrayListInsteadOfVector

UseArrayListInsteadOfVector

ArrayList is a much better Collection implementation than Vector if thread-safe operation is not required.



//CompilationUnit[count(ImportDeclaration) = 0 or count(ImportDeclaration/Name[@Image='java.util.Vector']) > 0]
  //AllocationExpression/ClassOrInterfaceType
    [@Image='Vector' or @Image='java.util.Vector']


Example(s):



public class SimpleTest extends TestCase {
	public void testX() {
		Collection c1 = new Vector();		
		Collection c2 = new ArrayList();	// achieves the same with much better performance
	}
}