Oracle java se documentation

Trail: Learning the Java Language

This trail covers the fundamentals of programming in the Java programming language.

Object-Oriented Programming Concepts teaches you the core concepts behind object-oriented programming: objects, messages, classes, and inheritance. This lesson ends by showing you how these concepts translate into code. Feel free to skip this lesson if you are already familiar with object-oriented programming.

Language Basics describes the traditional features of the language, including variables, arrays, data types, operators, and control flow.

Classes and Objects describes how to write the classes from which objects are created, and how to create and use the objects.

Annotations are a form of metadata and provide information for the compiler. This lesson describes where and how to use annotations in a program effectively.

Interfaces and Inheritance describes interfaces—what they are, why you would want to write one, and how to write one. This section also describes the way in which you can derive one class from another. That is, how a subclass can inherit fields and methods from a superclass. You will learn that all classes are derived from the Object class, and how to modify the methods that a subclass inherits from superclasses.

Numbers and Strings This lesson describes how to use Number and String objects The lesson also shows you how to format data for output.

Generics are a powerful feature of the Java programming language. They improve the type safety of your code, making more of your bugs detectable at compile time.

Packages are a feature of the Java programming language that help you to organize and structure your classes and their relationships to one another.

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Java Documentation

Whether you are working on a new cutting edge app or simply ramping up on new technology, Java documentation has all the information you need to make your project a smashing success. Use the rich set of code samples, tutorials, developer guides, API documentation, and more to quickly develop your prototype and scale it up to a real world application.

Java Platform, Standard Edition (Java SE)

Java SE lets you develop and deploy Java applications on desktops and servers. Java SE and component technologies offer the rich user interface, performance, versatility, portability, and security that today’s applications require.

Java SE Documentation

• Java SE Licensing Information Product License, Commercial Features and Terms, Java SE Licensing Information User Manual (LIUM), Readme Files, Release Notes, and information on Data Collection
• Java SE Technical Documentation
• Java SE Components Documentation

Java Embedded

Java ME Embedded is designed for resource-constrained devices like wireless modules for M2M, industrial control, smart-grid infrastructure, environmental sensors and tracking, and more.

Oracle Java SE Embedded delivers a secure, optimized runtime environment ideal for network-based devices.

Java Card technology provides a secure environment for applications that run on smart cards and other devices with very limited memory and processing capabilities.

Java Platform, Enterprise Edition (Java EE)

Java EE provides an API and runtime environment for developing and running large, multi-tiered, reliable, and secure enterprise applications that are portable and scalable and that integrate easily with legacy applications and data.

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Java ® Platform, Standard Edition & Java Development Kit
Version 20 API Specification

Java SE The Java Platform, Standard Edition (Java SE) APIs define the core Java platform for general-purpose computing. These APIs are in modules whose names start with java . JDK The Java Development Kit (JDK) APIs are specific to the JDK and will not necessarily be available in all implementations of the Java SE Platform. These APIs are in modules whose names start with jdk .

Defines the AWT and Swing user interface toolkits, plus APIs for accessibility, audio, imaging, printing, and JavaBeans.

Defines the Java API for XML Processing (JAXP), the Streaming API for XML (StAX), the Simple API for XML (SAX), and the W3C Document Object Model (DOM) API.

Defines the JDK-specific HTTP server API, and provides the jwebserver tool for running a minimal HTTP server.

Defines an API for expressing computations that can be reliably compiled at runtime into SIMD instructions, such as AVX instructions on x64, and NEON instructions on AArch64.

Defines the implementation of the system documentation tool and its command-line equivalent, javadoc.

Defines tools for analysing dependencies in Java libraries and programs, including the jdeps, javap, and jdeprscan tools.

Defines the jlink tool for creating run-time images, the jmod tool for creating and manipulating JMOD files, and the jimage tool for inspecting the JDK implementation-specific container file for classes and resources.

Provides the jshell tool for evaluating snippets of Java code, and defines a JDK-specific API for modeling and executing snippets.

Report a bug or suggest an enhancement
For further API reference and developer documentation see the Java SE Documentation, which contains more detailed, developer-targeted descriptions with conceptual overviews, definitions of terms, workarounds, and working code examples. Other versions.
Java is a trademark or registered trademark of Oracle and/or its affiliates in the US and other countries.
Copyright © 1993, 2023, Oracle and/or its affiliates, 500 Oracle Parkway, Redwood Shores, CA 94065 USA.
All rights reserved. Use is subject to license terms and the documentation redistribution policy.

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Oracle java se documentation

The Java Tutorials have been written for JDK 8. Examples and practices described in this page don’t take advantage of improvements introduced in later releases and might use technology no longer available.
See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases.
See JDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases.

The Java Tutorials are practical guides for programmers who want to use the Java programming language to create applications. They include hundreds of complete, working examples, and dozens of lessons. Groups of related lessons are organized into «trails».

Trails Covering the Basics

• Getting Started — An introduction to Java technology and lessons on installing Java development software and using it to create a simple program.
• Learning the Java Language — Lessons describing the essential concepts and features of the Java Programming Language.
• Essential Java Classes — Lessons on exceptions, basic input/output, concurrency, regular expressions, and the platform environment.
• Collections — Lessons on using and extending the Java Collections Framework.
• Date-Time APIs — How to use the java.time pages to write date and time code.
• Deployment — How to package applications and applets using JAR files, and deploy them using Java Web Start and Java Plug-in.
• Preparation for Java Programming Language Certification — List of available training and tutorial resources.

Creating Graphical User Interfaces

• Creating a GUI with Swing — A comprehensive introduction to GUI creation on the Java platform.
• Creating a JavaFX GUI — A collection of JavaFX tutorials.

Specialized Trails and Lessons

These trails and lessons are only available as web pages.

• Custom Networking — An introduction to the Java platform’s powerful networking features.
• The Extension Mechanism — How to make custom APIs available to all applications running on the Java platform.
• Full-Screen Exclusive Mode API — How to write applications that more fully utilize the user’s graphics hardware.
• Generics — An enhancement to the type system that supports operations on objects of various types while providing compile-time type safety. Note that this lesson is for advanced users. The Java Language trail contains a Generics lesson that is suitable for beginners.
• Internationalization — An introduction to designing software so that it can be easily adapted (localized) to various languages and regions.
• JavaBeans — The Java platform’s component technology.
• JAXB — Introduces the Java architecture for XML Binding (JAXB) technology.
• JAXP — Introduces the Java API for XML Processing (JAXP) technology.
• JDBC Database Access — Introduces an API for connectivity between the Java applications and a wide range of databases and data sources.
• JMX— Java Management Extensions provides a standard way of managing resources such as applications, devices, and services.
• JNDI— Java Naming and Directory Interface enables accessing the Naming and Directory Service such as DNS and LDAP.
• Reflection — An API that represents («reflects») the classes, interfaces, and objects in the current Java Virtual Machine.
• RMI — The Remote Method Invocation API allows an object to invoke methods of an object running on another Java Virtual Machine.
• Security — Java platform features that help protect applications from malicious software.
• Sockets Direct Protocol — How to enable the Sockets Direct Protocol to take advantage of InfiniBand.
• Sound — An API for playing sound data from applications.
• 2D Graphics — How to display and print 2D graphics in applications.

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Java ® Platform, Standard Edition & Java Development Kit
Version 11 API Specification

Java SE The Java Platform, Standard Edition (Java SE) APIs define the core Java platform for general-purpose computing. These APIs are in modules whose names start with java . JDK The Java Development Kit (JDK) APIs are specific to the JDK and will not necessarily be available in all implementations of the Java SE Platform. These APIs are in modules whose names start with jdk .

Defines the AWT and Swing user interface toolkits, plus APIs for accessibility, audio, imaging, printing, and JavaBeans.

Defines the Java API for XML Processing (JAXP), the Streaming API for XML (StAX), the Simple API for XML (SAX), and the W3C Document Object Model (DOM) API.

Defines the implementation of the system documentation tool and its command line equivalent, javadoc.

Defines tools for analysing dependencies in Java libraries and programs, including the jdeps, javap, and jdeprscan tools.

Defines the jlink tool for creating run-time images, the jmod tool for creating and manipulating JMOD files, and the jimage tool for inspecting the JDK implementation-specific container file for classes and resources.

This module provides support for Java Programming Language ‘snippet’ evaluating tools, such as Read-Eval-Print Loops (REPLs), including the jshell tool.

Defines tools for transforming a JAR file into a compressed pack200 file and transforming a packed file into a JAR file, including the pack200 and unpack200 tools.

Defines the rmic compiler for generating stubs and skeletons using the Java Remote Method Protocol (JRMP) for remote objects.

Provides the implementation of Nashorn script engine and the runtime environment for programs written in ECMAScript 5.1.

Report a bug or suggest an enhancement
For further API reference and developer documentation see the Java SE Documentation, which contains more detailed, developer-targeted descriptions with conceptual overviews, definitions of terms, workarounds, and working code examples.
Java is a trademark or registered trademark of Oracle and/or its affiliates in the US and other countries.
Copyright © 1993, 2023, Oracle and/or its affiliates, 500 Oracle Parkway, Redwood Shores, CA 94065 USA.
All rights reserved. Use is subject to license terms and the documentation redistribution policy.

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