Java 7 is the latest version of Java programming language launched on 7th July 2011 and released on 28th July 2011. There have been some major updates on the older versions of Java Language with the introduction of some extensive new features that makes Java 7.0 even more easy to understand and implement. The additional features that characterize Java 7 are listed below.
Java virtual Machine
A Java Virtual Machine is a set of software programs that act like a virtual machine to execute the Java bytecode translated from a Java program. In Java 7, support for dynamically typed languages is provided so that the speed of their execution in JVM is faster. As a part of this addition to JSR 292, a new construct has been added called method handle. For method invocation, a new Java bytecode, invokedynamic, has been added to the language. This bytecode runs much faster in JVM.
Apart from the changes to JVM, Java SE API has also been updated to enhance the performance of dynamically typed languages. Changes have also been made to perform a more rigorous file checking. The virtual machine should ensure that the file is being verified by the type checking verifier.
To simplify the most basic features of Java used on a daily basis, some small features have been added to the language.
Architecture of Java Programming Language
Java 7 Programming Language: Upgrading of class-loader architecture
We create classes in a Java program and for loading those classes, we need some object. A class loader is that object which allows us to load a class. The Newly Released Java 7 has introduced some new feature along with some modifications to the ClassLoader and ClassLoader API architecture, so that any deadlocks that may occur in class-loader topologies, that are non-hierarchical, may be avoided.
A Method is created to close a URLClassLoader
Concurrency and collections updates
Tools like ForkJoin Pool, ThreadLocalRandom and java.util.concurrent are introduced.
Increased Scope of Java 7
The feature of Unicode is further upgraded to the version Unicode 6.0. java.util.Locale is upgraded to support IETF BCP 47 and UTR 35.
Separating user locale from user-interface locale
One definition for formatting locales and user-interface language locales caused complexity in the code. So handling of locales has been upgraded by separating the types of locales from one another.
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