Thursday, 6 April 2017

Java Collection Basic Questions Part 4

1) How HashMap works in Java ? HashMap works On principle of Hashing.but it is not as simple as it sounds. Hashing is the mechanism of as... thumbnail 1 summary
1) How HashMap works in Java ? HashMap works On principle of Hashing.but it is not as simple as it sounds. Hashing is the mechanism of as...

Monday, 27 March 2017

Internal Implementation of HashMap

Hash Map is one of the most used collection, though it will be surprising to know that maps themselves are not collections because they don... thumbnail 1 summary
Hash Map is one of the most used collection, though it will be surprising to know that maps themselves are not collections because they don...

Tuesday, 14 March 2017

JDBC Interview Questions

1) What is JDBC? Java Database Connectivity (JDBC) is an application programming interface (API) for Java, which defines how a client m... thumbnail 1 summary
1) What is JDBC? Java Database Connectivity (JDBC) is an application programming interface (API) for Java, which defines how a client m...

Sunday, 12 March 2017

Java Collection Basic Questions Part 3

1) What is the importance of hashCode() and equals() methods? You must override hashCode() in every class that overrides equals(). Fail... thumbnail 1 summary
1) What is the importance of hashCode() and equals() methods? You must override hashCode() in every class that overrides equals(). Fail...

Friday, 3 March 2017

ExceptionHandling with MethodOverriding

An overriding method (the method of child class) can throw any unchecked exceptions, regardless of whether the overridden method (method... thumbnail 1 summary
An overriding method (the method of child class) can throw any unchecked exceptions, regardless of whether the overridden method (method...

Wednesday, 1 March 2017

Java Collection Basic Questions Part 2

The Java Collections API's provide Java developers with a set of classes and interfaces that makes it easier to handle collections of... thumbnail 1 summary
The Java Collections API's provide Java developers with a set of classes and interfaces that makes it easier to handle collections of...

Tuesday, 21 February 2017

Java Collection Basic Questions Part 1

1) What is Collection ? A collection — sometimes called a container — is simply an object that groups multiple elements into a single un... thumbnail 1 summary
1) What is Collection ? A collection — sometimes called a container — is simply an object that groups multiple elements into a single un...