Top 10 Most Important Websites for Java Programmers

Below is my list of top 10 resources for getting more in-depth knowledge on various topics of Java.

Open JDK website -  - Collaborate on the open-source implementation of Java Standard Edition and its related project. This is the home page for the OpenJDK Community. You can here contribute as well to the OpenJDK and related projects by downloading as a local copy its source code from the Mercurial repository and contributing your fixes/changes.

JDK 11 website - download production-ready open source builds of the JDK v11 implementation of Java SE 11. It contains information about the new features and enhancements in this release.

Oracle JDK documentation page -  - The site contains useful code samples, tutorials, developer guides, release notes and API documentation.

JavaZone at Dzone for latest articles and tutorials for beginners to experts on Java. 

1. Java Home – Contains information about almost everything related to Java. You can also find here the latest Java software (Games, Mobile, and Desktop applications).
2. Java SE Download  – URL of the official site to download the latest Oracle Java Platform Standard Edition or Oracle JDK.
3. Java API Reference – Java API Specifications or Java API Documentations from Oracle, contains all packages, classes, and interfaces (also including deprecated methods and classes )
4. The Java  Tutorial – Collection of tutorials containing guides which you can practice to learn various topics of Java.
5. On Java 8 – On Java 8 is an eBook only available via Google Play Books. 
6. Java Ranch – Nice place for Learning Java through Fun.
7. Java Technology  – Official site containing the latest information about Java Technology.
8. Go Java  - Official Collection of Java Resources.
9. The Server Side.com –  Contains informative articles about the latest technology in Enterprise Java World.
10. Oracle Technology Network - Oracle Technology Network for Java Developers.

Also worth visiting following channels on Youtube - 14-youtube-channels-you-should-follow-in-2019

dzone.com - Eclipse Template: Singleton Pattern

Singleton Pattern

Creating a Template for Eclipse

dzone.com - Eclipse Template: Singleton Pattern:

With minor modification was able to make it work as Live Templates in Settings for IntelliJ Idea Community Edition as well.

using $enclosing_type$ instead of ${enclosing_type} and assigning it to className() in the Edit Variable Table.

'via Blog this'

What's OpenJDK ?

OpenJDK (http://openjdk.java.net) is the place to collaborate on an open-source implementation of the Java Platform, Standard Edition, and related projects.

Related articles

• SAP joins OpenJDK Java project (infoworld.com)
• Oracle Java 7 launched (echlinm.wordpress.com)
• Oracle Frees JRockit (pcworld.com)

Oracle Java SE Certification

Java Certification (OCJP)

Please refer the following link for details on the Java Certification
https://education.oracle.com/java/java-se/product_267?certPage=true

The sites below are no longer available after Sun Microsystem got acquired by Oracle.

Sun Certified Java Programmer (SCJP)

This foundation certification is for programmers interested in demonstrating proficiency in the fundamentals of the Java programming language.It is not necessary to be a Sun Certified Java Associate prior to taking this exam.

Java Certification
http://www.sun.com/training/certification/java/scjd.xml

Sun's certification program in Java technology is an industry recognized, worldwide program that focuses on critical job roles in software application development and enterprise architecture. Since these certifications focus on the technology, the knowledge and skills learned while preparing for Sun's certifications are transportable from one company to another.

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Sun offers the following Java technology professional certifications:

- Sun Certified Java Associate (SCJA)
- Sun Certified Java Programmer (SCJP)
- Sun Certified Java Developer (SCJD)
- Sun Certified Web Component Developer (SCWCD)
- Sun Certified Business Component Developer (SCBCD)
- Sun Certified Developer For Java Web Services (SCDJWS)
- Sun Certified Mobile Application Developer (SCMAD)
- Sun Certified Enterprise Architect (SCEA)

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Sun Certified Programmer for the Java Platform, Standard Edition 5.0 (CX-310-055)

The Sun Certified Programmer for the Java Platform, Standard Edition 5.0 certification exam is for programmers experienced using the Java programming language. Achieving this certification provides clear evidence that a programmer understands the basic syntax and structure of the Java programming language and can create Java technology applications that run on server and desktop systems using J2SE 5.0.

Sun Certified Programmer for the Java Platform, Standard Edition 6 (CX-310-065)
Java 6.0 Certification - Java SE 6 is the major release of the Java SE platform, with full support from NetBeans IDE 5.5.

Sun endeavors to foster the highest level of transparency and collaboration on the platform with the Java community through Project JDK 6, resulting in the following key features.

Sun's Java Multi-Platform Support, Training, and Certification can provide you the peace of mind to develop and deploy Java solutions with confidence.