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Sanity4J was created to simplify running multiple static code analysis tools on the Java projects. It provides a single entry point to run all the selected tools and produce a consolidated report, which presents all findings in an easily accessible manner.

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LooseCoupling

LooseCoupling

Avoid using implementation types (i.e., HashSet); use the interface (i.e, Set) instead
This rule is defined by the following Java class: net.sourceforge.pmd.lang.java.typeresolution.rules.LooseCoupling
Example(s):



import java.util.ArrayList;
import java.util.HashSet;

public class Bar {
		// Use List instead
	private ArrayList list = new ArrayList();
		// Use Set instead
	public HashSet getFoo() {
    return new HashSet();
  }
}