In the Java specification, it is considered good practice to override .equals() and .hashCode() both together. In the context of HashMap, explain why implementing only one of the two instead of both can cause problems. You must consider both cases.
Desarrollador De Ui De Java Interview Questions
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Extensive java core questions and collection
Questions were quite simple like Define OOP Concepts in Java, Exception Handling and How to do inhertance and basic HR questions like Tell me something about yourself.
Can an interface contain static methods? Can they contain non-synchronized methods?
What is the difference between an Array and an ArrayList
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Array programs. compare two arrays. find largest element in array. array length will vary. (not same length arrays will be given)
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1. Group people by name, age in using stream api, eg: [{ram, 29}, {kim.29}, {sandy,30}, {mark,34},{lisa,34},{steve,25} ] 2. using java write a program to make the 0 in left side and 1 in right side, an array of mixed value of 0s, 1s
Q: What is Interface and Abstract Class in Java?
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