org.sonar.l10n.java.rules.java.S4977.html Maven / Gradle / Ivy

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Why is this an issue?
Shadowing makes it impossible to use the type parameter from the outer scope. Also, it can be confusing to distinguish which type parameter is
being used.
This rule raises an issue when a type parameter from an inner scope uses the same name as one in an outer scope.
Noncompliant code example
 public class TypeParameterHidesAnotherType<T> {

    public class Inner<T> { // Noncompliant
      //...
    }

    private <T> T method() { // Noncompliant
      return null;
    }

  }

Compliant solution
public class NoTypeParameterHiding<T> {

    public class Inner<S> { // Compliant
      List<S> listOfS;
    }

    private <V> V method() { // Compliant
      return null;
    }

  }