Future Trends and Focus Areas of Java www.huawei.com HUAWEI - - PowerPoint PPT Presentation

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Future Trends and Focus Areas of Java

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Contents

• Focus areas
• Java 8 Features
• Debug enhancements

Focus Areas

• Exploit multi core capabilities with more parallel

execution language constructs.

• Modular and orchestration based development.
• Virtualization support.
• Common platform for native and web development

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• Simplified development

Page 3

JDK – 8 - Lambda Expressions

In conventional Java terms lambdas can be understood as a kind of anonymous method with a more compact syntax that also allows the

• mission of modifiers, return type, and in some cases parameter types as

well.

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JDK – 8 - Project Jigsaw

An exploratory effort to design and implement a module system for the Java SE Platform and to apply that system to the Platform itself and to the JDK. Modules A module is a collection of Java types (i.e., classes and interfaces) with a name, an

• ptional version number, and a formal description of its relationships to other modules. In

addition to Java types a module can include resource files, configuration files, native libraries, and native commands. A module can be cryptographically signed so that its authenticity can be validated.

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JDK – 8- Nashorn Project

This project intends to enable Java developers to embed JavaScript in Java applications via JSR-223 and to develop free standing JavaScript applications using the jrunscript command line tool . This project is designed to take full advantage of newer technologies in a native JVM, made since the original development of JVM based JavaScript started in 1997 by Netscape [3] and maintained by Mozilla [4]. This project will

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be an entirely new code base, focused on these newer technologies The goal is to provide a lightweight high performance JavaScript on a native JVM.

JDK – 8- Java Compact Profiles

Define a few subset Profiles of the Java SE Platform Specification so that applications that do not require the entire Platform can be deployed and run

• n small devices.

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JDK – 8 - New Libraries

• Parallel Array Sorting
• Add additional utility methods to java.util.Arrays that use the JSR 166

Fork/Join parallelism common pool to provide sorting of arrays in parallel.

• Bulk Data Operations for Collections
• Add functionality to the Java Collections Framework for bulk operations

upon data. This is commonly referenced as “filter/map/reduce for Java”.

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The bulk data operations include both serial (on the calling thread) and parallel (using many threads) versions of the operations. Operations upon data are generally expressed as lambda functions.

• Date and Time API
• Define a new date, time, and calendar API for the Java SE platform.

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JDK - 8 - Security Enhancements

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Debug Trends – Beyond Log Files

Record and play execution detail for future debug

• Log files to be parsed are huge, making it very tough to locate the issue.
• Usually finer grained, debug level logging or even additional logging needs to be

added, resulting in even larger log files.

• The issue still needs to be reproduced many, many times, sometimes spanning the

period of days/weeks before the root cause is found.

• All the logging statements end up cluttering the code and hiding actual business

logic.

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logic.

• Chronon Systems provides a system which can record and replay java

execution offline. Smarter hot class swapping

Thank you

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