Java Basic

Java is an object-oriented, cross platform, multi-purpose programming language produced by Sun Microsystems. First released in 1995, it was developed to be a machine independent web technology. It was based on C and C++ syntax to make it easy for programmers from those communities to learn. Since then, it has earned a prominent place in the world of computer programming.

Java has many characteristics that have contributed to its popularity:

• Platform independence - Many languages are compatible with only one platform. Java was specifically designed so that it would run on any computer, regardless if it was running Windows, Linux, Mac, Unix or any of the other operating systems.
• Simple and easy to use - Java's creators tried to design it so code could be written efficiently and easily.
• Multi-functional - Java can produce many applications from command-line programs to applets to Swing windows (basically, sophisticated graphical user interfaces).

Java does have some drawbacks. Since it has automated garbage collection, it can tend to use more memory than other similar languages. There are often implementation differences on different platforms, which have led to Java being described as a "write once, test everywhere" system. Lastly, since it uses an abstract "virtual machine", a generic Java program doesn't have access to the Native API's on a system directly. None of these issues are fatal, but it can mean that Java isn't an appropriate choice for a particular piece of software.

Java Keywords

• Static Keyword
• Final Keyword
• Synchronize Keyword
• Volatile Keyword
• Super Keyword
• Throw vs Throws Keyword
• this keyword

Java 8 Tutorials

• Java 8 Lambda
• Streams in java

Thread and concurrecny

• Deadlock
• Atomic Variables
• Producer Consumer problem using wait() and notifyAll()
• Producer Consumer problem using BlockingQueue
• How ConcurrentHashMap works?

Things Every Java Programmer should know

• OOPs concepts
• Java Data Types
• Hashcode() and Equals()
• Comparable vs Comparator Interface
• Immutable Class
• Stack vs Heap
• StringBuffer vs StringBUilder

Recommend Reading

1. How java manages Memory?
2. Why is it advised to use hashcode and equals together?
3. Comparable and Comparator in java
4. How to create Singleton class in Java?
5. Difference between equals and ==?
6. When to use abstract class over interface?
7. Difference between final, finally and finalize
8. Why is it recommended to use Immutable objects in Java