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| Core Java - Interview Questions and Answers for 'Equals method' - 2 question(s) found - Order By Rating | |||||||||||
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| Ans. str.equals("") this statement will throw NullPointerException if str is null where as "".equals(str) works fine even if str is null | |||||||||||
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 Discuss Correct / Improve  equals method  Asked in 1 Companies | |||||||||||
 Related Questions | |||||||||||
 In Java, if object A contains same the same data of object B, are they equal? | |||||||||||
| What is equals method in Java ? | |||||||||||
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| Ans. it depends on the implementation of equals method of the respective class. If no definition is provided and it uses the default definition of the object class, two references are equal only if they point to the same object. We can have such an equality defined for a particular class objects if we provide appropriate implementation of equals method comparing all those fields. | |||||||||||
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| Related Questions | |||||||||||
| Difference between == and .equals() ? | |||||||||||
| Which String class does not override the equals() and hashCode() methods, inheriting them directly from class Object? | |||||||||||
| Can we compare Integers by using equals() in Java ? | |||||||||||
| Write a class and override the equals and hashcode method ? | |||||||||||
| What is equals method in Java ? | |||||||||||
| What is a reflexive equals contract ? | |||||||||||
| Explain Transitive equals contract. | |||||||||||
| why is "".equals(str); safer than str.equals("")? | |||||||||||
| Difference between equals and compareTo in Java ? | |||||||||||
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