EqualsUnsafeCast
The contract of #equals states that it should return false for incompatible types, while this implementation may throw ClassCastException.

Severity: WARNING

The problem

Implementations of #equals should return false for different types, not throw.

class Data {
  private int a;

  @Override
  public boolean equals(Object other) {
    Data that = (Data) other; // BAD: This may throw ClassCastException.
    return a == that.a;
  }
}

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("EqualsUnsafeCast") to the enclosing element.