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Java / Java8 streams

How to override equals method in Java8?

See the below code snippet. 

@Override
public boolean equals (Object obj) {
return Optional.ofNullable(obj)
           .filter(that -> that instanceof Employee)
           .map(that -> (Employee) that)
           .filter(that -> this.fName.equals(that.fName))
           .filter(that -> this.lName.equals(that.lName))
           .isPresent();
}

}

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