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Java Classes
This trail discusses classes from the Java platform that are essential to most programmers. Packages are a feature of the Java programming language that help you to organize and structure your classes and their relationships to one another. For more information on the transition of products from the legacy Sun download system to the Oracle Technology Network, visit the SDLC Decommission page announcement. Only developers and Enterprise administrators should download these releases. California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice.
- The audience should have a basic knowledge of Java or another object-oriented programming language in the syntactic traditions of C/C++.
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over the examples as many times as needed.
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Java Platform Standard Edition 7 Documentation
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- The JDK is a development environment for building applications, applets, and components using the Java programming language.
- This tutorial supplements all explanations with clarifying examples.
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Language and Libraries
The Java platform is designed from the ground up to support concurrent programming, with basic concurrency support in the Java programming language and the Java class libraries. Since version 5.0, the Java platform has also included high-level concurrency APIs. This lesson introduces the platform’s basic concurrency support and summarizes some of the high-level APIs in the java.util.concurrent packages.
For example, a candidate with a good knowledge of C# should be able to benefit from this material, even if one does not have prior experience in Java. Exceptions explains the exception mechanism and how it is used to handle errors and other exceptional conditions. This lesson describes what an exception is, how to throw and catch exceptions, what to do with an exception once it has been caught, and how to use the exception class hierarchy.
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With the knowledge you now have of the basics of the Java programming language, you can learn to write your own classes. In this
lesson,
you will find information about defining your own classes, including declaring member variables, methods, and constructors. Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites.
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Basic I/O covers the Java platform classes used for basic input and output. It focuses primarily on I/O Streams, a powerful concept that greatly simplifies I/O operations. The lesson also looks at Serialization, which lets a program write whole objects out to streams and read them back again. Then the lesson looks at some file system operations, including random access files. Finally, it touches briefly on the advanced features of the New I/O API.