CompareToReturnValueCheck.java

class A implements Comparable<A> {
  @Override
  public int compareTo(A a) {
    return Integer.MIN_VALUE; // Noncompliant [[sc=12;ec=29]] {{Simply return -1}}
  }
  
  public int compareTo() {
    return Short.MIN_VALUE; // Compliant
  }
  
  public int getMinValue() {
    return Integer.MIN_VALUE; // Compliant
  }
  
  public int compareTo(int a) {
    return -1; // Compliant
  }
  
  public boolean compareTo(Boolean a) {
    return a; // Compliant
  }
  
  public Long compareTo(Long a) {
    return Long.MIN_VALUE; // Compliant
  }
  
  @Override
  public int compareTo(Short a) {
    return Integer.MAX_VALUE; // Compliant
  }
}

class B implements Comparable<B> {
  @Override
  public int compareTo(B b) {
    
    class C implements Comparable<C> {
      @Override
      public int compareTo(C c) {
        
        class D implements Comparable<D> {
          @Override
          public int compareTo(D d) {
            return Integer.MIN_VALUE; // Noncompliant
          }
        }
        
        return Integer.MIN_VALUE; // Noncompliant
      }
    }
    
    return Integer.MIN_VALUE; // Noncompliant
  }
}

class E implements Comparable<E> {
  @Override
  public int compareTo(E e) {
    return 0; // Compliant
  }
}

class F implements Comparable<F> {
  @Override
  public int compareTo(F e) {
    return Integer.MAX_VALUE; // Compliant
  }
}

class G implements Comparable<G> {
  @Override
  public int compareTo(G e) {
    return Short.MAX_VALUE; // Compliant
  }
}