Scan-IT Interview Questions and Answers

The contract between hashCode and equals method is that if two objects are equal according to equals method, their hash codes must be equal as well.

• The hashCode method returns an integer value that represents the object's unique identifier.

• The equals method is used to compare two objects for equality.

• According to the contract, if two objects are equal, their hash codes must be equal.

• If the hashCode method is overridden...read more

The equals() method compares the content of two strings, while the == operator compares their references.

• The equals() method returns true if the content of two strings is the same.

• The == operator returns true if the references of two strings are the same.

• Example: String str1 = "Hello"; String str2 = new String("Hello"); str1.equals(str2) returns true, but str1 == str2 returns false.