Learn how to implement the equals and hashCode methods in Java to ensure consistent and logical object equality in object-oriented design.

As to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes. If two objects have the same hashcode then they are NOT necessarily equal.

hashCode() 메소드를 실행해서 리턴된 해시코드 값이 같은지를 본다 해시 코드값이 다르면 다른 객체로 판단하고, 해시 코드값이 같으면 equals() 메소드로 다시 비교한다 이 두 개가 모두 맞아야 동등 객체로 판단한다 즉, 해시코드 값이 다른 엔트리끼리는 동치성 비교를 시도조차 하지 않는다 그렇기 ...

Obi Ezechukwu 's blog High-Octane Java recently featured the post Compact Equals , which compares an implementation of a Java class's overridden equals method in traditional form versus one ...

Because there are default equals and hashCode methods provided by the parent Object class, Java code using Person instances will be able to perform equals and/or hashCode, but they aren’t likely ...

So, I've overridden the equals method as well, and I just put a printout in there saying, 'Calling the equals method' and what object we're calling the equals method for. And then we just do the ...