Java Archives - Page 620 of 626

Retrieving Elements from Collection in Java (For-each, Iterator, ListIterator & EnumerationIterator)

Easy

Prerequisite: Collection in Java Following are the 4 ways to retrieve any elements from a collection object: For-each For each loop is meant for traversing items… Read More

Java

Using underscore in Numeric Literals in Java

Easy

A new feature was introduced by JDK 7 which allows writing numeric literals using the underscore character. Basically, they are broken to enhance readability. This feature… Read More

java-basics

Java

Variable Arguments (Varargs) in Java

Easy

Variable Arguments (Varargs) in Java is a method that takes a variable number of arguments. Variable Arguments in Java simplifies the creation of methods that… Read More

Java

Reflection in Java

Medium

Reflection is an API that is used to examine or modify the behavior of methods, classes, and interfaces at runtime. The required classes for reflection… Read More

Java

String class in Java

Easy

String is a sequence of characters. In java, objects of String are immutable which means a constant and cannot be changed once created. Creating a… Read More

Java-lang package

Java-Strings

DSA

Java

School Programming

Strings

Iterator vs Foreach In Java

Easy

Background : Iterator is an interface provided by collection framework to traverse a collection and for a sequential access of items in the collection. // Iterating… Read More

Java

Tips and Tricks for Competitive Programmers | Set 2 (Language to be used for Competitive Programming)

Basic

This is a question asked quite often as in which language should be preferred to be efficient in competitive programming. It is something one should… Read More

GBlog-Competitive-Programming

C++

Competitive Programming

DSA

GBlog

Java

Python

HashSet in Java

Medium

The HashSet class implements the Set interface, backed by a hash table which is actually a HashMap instance. No guarantee is made as to the… Read More

Java - util package

Java-Collections

java-hashset

Java

Primitive Wrapper Classes are Immutable in Java

Easy

In Java, an immutable class is a class (Integer, Byte, Long, Float, Double, Character, Boolean, and Short) which once created then its body can not… Read More

java-wrapper-class

Java

Assertions in Java

Easy

An assertion allows testing the correctness of any assumptions that have been made in the program. An assertion is achieved using the assert statement in… Read More

Java

Collections in Java

Easy

Any group of individual objects which are represented as a single unit is known as the collection of the objects. In Java, a separate framework… Read More

Java-Collections

Java

Pair Class in Java

Easy

In C++, we have std::pair in the utility library which is of immense use if we want to keep a pair of values together. We… Read More

Java-Collections

Java

Commonly Asked Java Programming Interview Questions | Set 1

Medium

Why is Java called the ‘Platform Independent Programming Language’? Platform independence means that execution of your program does not dependent on type of… Read More

Java

Generics in Java

Easy

Generics means parameterized types. The idea is to allow type (Integer, String, … etc., and user-defined types) to be a parameter to methods, classes, and… Read More

Java-Generics

Java

Garbage Collection in Java

Easy

Garbage collection in Java is the process by which Java programs perform automatic memory management. Java programs compile to bytecode that can be run on… Read More

java-garbage-collection

Java

Category Archives: Java

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