The Java Platform, Standard Edition 8 Development Kit (JDK 8) is a feature release of the Java SE platform. It contains new features and enhancements in many functional areas.
Likewise, what is in Java 9?
Java Platform, Standard Edition 9 is a major feature release. The following summarizes features and enhancements in Java SE 9 and in JDK 9, Oracle's implementation of Java SE 9. A JDK Enhancement Proposal (JEP) is a proposal to design and implement a nontrivial change to the JDK.
What is the Java language used for?
Java was designed to have the look and feel of the C++ language, but it is simpler to use than C++ and enforces an object-oriented programming model. Java can be used to create complete applications that may run on a single computer or be distributed among servers and clients in a network.
|Java Releases||Release Date|
|Java 8 Update 5 CPU (OTN) Java 7 Update 55 CPU||April 15, 2014|
|Java 8 Release (OTN)||March 18, 2014|
|Java 7 Update 51 CPU||January 14, 2014|
|Java 7 Update 45 CPU||October 15, 2013|
Java lambda expressions are new in Java 8. Java lambda expressions are Java's first step into functional programming. A Java lambda expression is thus a function which can be created without belonging to any class. A Java lambda expression can be passed around as if it was an object and executed on demand.
Following list is a highlight of important features, there are other minor enhancements, security features, bug fixes are available as part of Java 8.
- Lambda Expressions.
- Pipelines and Streams.
- Date and Time API.
- Default Methods.
- Type Annotations.
- Concurrent Accumulators.
- Parallel operations.
Some of the important Java 8 features are;
- forEach() method in Iterable interface.
- default and static methods in Interfaces.
- Functional Interfaces and Lambda Expressions.
- Java Stream API for Bulk Data Operations on Collections.
- Java Time API.
- Collection API improvements.
- Concurrency API improvements.
- Java IO improvements.
Java 8 is a revolutionary release of the world's #1 development platform. It includes a huge upgrade to the Java programming model and a coordinated evolution of the JVM, Java language, and libraries.
The JDK forms an extended subset of a software development kit (SDK). It includes "tools for developing, debugging, and monitoring Java applications". Oracle strongly suggests to now use the term JDK to refer to the Java SE Development Kit.
Update Java in the Java Control Panel
- Launch the Java Control Panel by clicking the Java icon under System Preferences.
- Go to the Update tab in Java Control Panel and click on Update Now button that brings up Installer window.
- Click on Install Update.
- Click on Install and Relaunch.
Declaration: The code set in bold are all variable declarations that associate a variable name with an object type. Instantiation: The new keyword is a Java operator that creates the object. Initialization: The new operator is followed by a call to a constructor, which initializes the new object.
Here are nine exciting new features that will ship with Java 9.
- The Java Platform module system. The defining feature for Java 9 is an all-new module system.
- JShell: the interactive Java REPL.
- Improved Javadoc.
- Collection factory methods.
- Stream API improvements.
- Private interface methods.
Windows 7 and Vista - Uninstall Programs
- Click Start.
- Select Control Panel.
- Select Programs.
- Click Programs and Features.
- Select the program you want to uninstall by clicking on it, and then click the Uninstall button.
The Java Runtime Environment (JRE) is a set of software tools for development of Java applications. It combines the Java Virtual Machine (JVM), platform core classes and supporting libraries. JRE is part of the Java Development Kit (JDK), but can be downloaded separately.
Java Platform, Standard Edition (Java SE) is a computing platform for development and deployment of portable code for desktop and server environments. Java SE was formerly known as Java 2 Platform, Standard Edition (J2SE). The platform uses Java programming language and is part of the Java software-platform family.
Default Methods In Java. Before Java 8, interfaces could have only abstract methods. Default methods are also known as defender methods or virtual extension methods. Static Methods: The interfaces can have static methods as well which is similar to static method of classes.
new is a Java keyword. It creates a Java object and allocates memory for it on the heap. new is also used for array creation, as arrays are also objects.
At first, you could think about lambda expressions as a way of supporting functional programming in Java. Functional programming is a paradigm that allows programming using expressions i.e. declaring functions, passing functions as arguments and using functions as statements (rightly called expressions in Java8).
A lambda expression is an anonymous function that you can use to create delegates or expression tree types. By using lambda expressions, you can write local functions that can be passed as arguments or returned as the value of function calls. A lambda expression is the most convenient way to create that delegate.
A functional interface is an interface that contains only one abstract method. They can have only one functionality to exhibit. From Java 8 onwards, lambda expressions can be used to represent the instance of a functional interface. Runnable, ActionListener, Comparable are some of the examples of functional interfaces.
Note: To uninstall Java 7, you must have Administrator privileges.
- Click on the Finder icon located in your dock.
- Click on Applications tab on the sidebar.
- In the Search box enter JavaAppletPlugin.plugin.
- This will find the JavaAppletPlugin.plugin file.
- Right click on JavaAppletPlugin.plugin and select Move to Trash.
new operator in Java. When you are declaring a class in java, you are just creating a new data type. A class provides the blueprint for objects. This variable does not define an object. Instead, it is simply a variable that can refer to an object.