Core Java (All)

Java Core - Additional Important Concepts for Exams and Interviews

Submitted by heartin on Tue, 09/21/2021 - 01:36

Important concepts that can help you with core Java interviews and exams.

ArrayList Class Basic Concepts

Submitted by heartin on Sun, 07/05/2020 - 05:29

ArrayList is a resizable-array implementation of the List interface.

Traversing, Comparing and Copying Arrays

Submitted by heartin on Sat, 07/04/2020 - 21:50

Traversing arrays

Traversing an array is the process of visiting each element of an array.

Two common ways to traverse an array are:

  • simple for loop / while loop

  • for-each loop

 

Example array

int[] myArray = {1,2,3,4,5}

 

Java Version History

Submitted by sneha on Wed, 05/13/2020 - 23:35

Like in movies, going through some flash back through the history can help us understand the present better.

  • JDK Beta – 1995

  • JDK 1.0 – January 1996

  • JDK 1.1 – February 1997

  • J2SE 1.2 – December 1998

  • J2SE 1.3 – May 2000

  • J2SE 1.4 – February 2002

  • J2SE 5.0 – September 2004

  • Java SE 6 – December 2006

  • Java SE 7 – July 2011

  • Java SE 8 – March 2014

  • Java SE 9 – September 2017

Pages

Quick Notes Finder Tags

Activities (1) advanced java (1) agile (3) App Servers (6) archived notes (2) Arrays (1) Best Practices (12) Best Practices (Design) (3) Best Practices (Java) (7) Best Practices (Java EE) (1) BigData (3) Chars & Encodings (6) coding problems (2) Collections (15) contests (3) Core Java (All) (55) course plan (2) Database (12) Design patterns (8) dev tools (3) downloads (2) eclipse (9) Essentials (1) examples (14) Exception (1) Exceptions (4) Exercise (1) exercises (6) Getting Started (18) Groovy (2) hadoop (4) hibernate (77) hibernate interview questions (6) History (1) Hot book (5) http monitoring (2) Inheritance (4) intellij (1) java 8 notes (4) Java 9 (1) Java Concepts (7) Java Core (9) java ee exercises (1) java ee interview questions (2) Java Elements (16) Java Environment (1) Java Features (4) java interview points (4) java interview questions (4) javajee initiatives (1) javajee thoughts (3) Java Performance (6) Java Programmer 1 (11) Java Programmer 2 (7) Javascript Frameworks (1) Java SE Professional (1) JPA 1 - Module (6) JPA 1 - Modules (1) JSP (1) Legacy Java (1) linked list (3) maven (1) Multithreading (16) NFR (1) No SQL (1) Object Oriented (9) OCPJP (4) OCPWCD (1) OOAD (3) Operators (4) Overloading (2) Overriding (2) Overviews (1) policies (1) programming (1) Quartz Scheduler (1) Quizzes (17) RabbitMQ (1) references (2) restful web service (3) Searching (1) security (10) Servlets (8) Servlets and JSP (31) Site Usage Guidelines (1) Sorting (1) source code management (1) spring (4) spring boot (3) Spring Examples (1) Spring Features (1) spring jpa (1) Stack (1) Streams & IO (3) Strings (11) SW Developer Tools (2) testing (1) troubleshooting (1) user interface (1) vxml (8) web services (1) Web Technologies (1) Web Technology Books (1) youtube (1)