Some checkstyle warnings contain details about the violation:

File: ProductCmptView.java, Line: 76, Type: ClassDataAbstractionCouplingCheck, Priority: Normal, Category: Metrics

Message:
Class Data Abstraction Coupling is 19 (max allowed is 10) classes [AssocFilterListener, Combo, Composite, GridData, GridLayout, IpsObjectViewerComparator, Label, NewProductComponentAction, NewQuestionTypeAction, NewRuleTypeAction, PasteInPCViewAction, Path, ProductCmptGridConfiguration, ProductCmptSearchFilter, ProductCmptViewContentProvider, Separator, ShowProductCmptViewAction, StructuredSelection, ToggleShowAssociationsAction].

For such warnings, the message should not be part of the equals method.