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What is an Iterator?
Some of the collection classes give traversal of their contents via a java.util.Iterator interface. This interface permits you to walk through a collection of objects, operating on every object in turn.
Remember when using Iterators that they have a snapshot of the collection at the time the Iterator was obtained; generally it is not advisable to modify the collection itself whereas traversing an Iterator.
Java platform is a software-only platform independent, which runs on top of other hardware-based platforms like WINDOWS, UNIX, NT etc. The Java platform has 2 main com
What is virtual function? While derived class overrides the base class method by redefining the same function, after that if client wants to access redefined the method from der
Difference between HashMap and Hash table HashMap: It allow us to have null values and also one null key It is Unsynchronized. Iterator in HashMap is Fail-Safe.
An application server creates data for a Web server - as, collecting data from databases, processing security checks, applying relevant business programs, and/or storing the state
Differentiate between SMTP and POP3 server? SMTP (Simple Mail Transfer Protocol) is a protocol used to send and receive eMail messages over a TCP/IP network. While POP3 (Post
What is the Comparable interface? Comparable interface is used to sort arrays and collections of objects using collections.sort() and java.utils. Objects of the class implement
It is a distinct type of loop, used to iterate through the properties of an object or the elements of an array. For instance assume the following statement that loops through th
Object diagrams define instances instead of classes. They are useful for illustrating some complicated objects in detail about their recursive relationships. When
CP5307 Assessment Task 3 Coding Project Specification SP22, 2019 Brisbane Description Another type of app found on app stores are “educational games”. There are immersive full-
Write a program called Power that displays the positive powers of 2. When the user enters the exponent at a prompt, the program displays 2 to that power. The program halts when the
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