The implementation of equals() and hashCode() should follow these rules.
Read moreWhat is equals () used for?
The equals() method compares two strings , and returns true if the strings are equal, and false if not.
Read moreWhat is the difference between == and the equals () method?
In simple words, == checks if both objects point to the same memory location whereas . equals() evaluates to the comparison of values in the objects . If a class does not override the equals method, then by default, it uses the equals(Object o) method of the closest parent class that has overridden this method.
Read moreDoes every Object have a toString method and an equal method?
This is how every class has a toString() method : since Object has a toString() method, then ‘children’ of Object inherit a toString() method, the children of children of Object inherit a toString() method, and so on. So every class ‘automatically’ gets a toString() method by inheritance.
Read moreWhat is the difference between equals and compareTo in Java?
The 2 main differences are that: equals will take any Object as a parameter, but compareTo will only take Strings . equals only tells you whether they’re equal or not, but compareTo gives information on how the Strings compare lexicographically.
Read moreWhat does equalsIgnoreCase mean in Java?
The equalsIgnoreCase() method compares two strings, ignoring lower case and upper case differences . This method returns true if the strings are equal, and false if not.
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