Do you know about SQL left and right join?
Junior Java Software Engineer Interview Questions
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Differenza tra classi e interfacce? Differenza tra interfacce e classi astratte? Cosa sono ereditarietà, polimorfismo e incapsulamento?
Basic Java questions Dbms Sql queries Computer network and more from the computer science basics
Previous experience in coding
Data structures, core Java , SQL
------------------------------- ->HashMap is implementation of Map interface ->Here we can store key value pairs ->When we use put method to set data to hashmap * Internally get the hashcode of key. * And based on the hashing algaritham it will find out the bucket location ->the defualt bucket size is 16. ->The same process will happened for get The data from hashmap ** There is chanse of getting same hashcode for multiple objects. this we called it has collission in this case intenal of bucket it will create linkedList and assinged. -->In java 1.8 hashmap performance improved As we know LinkedList permermance is low for the searching the data. if mutiple collision occures in the map. in this time hashmap performance also
static keyword, this keyword,final keyword
Aptitude Questions Static variable use
oops concept, basic c questions, html ,css
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