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Tag Archives: Java 7

The OpenJDK as the default Java on Linux

Hi All, Recently I’ve received a bunch of private correspondence from people confused/worried over the change in the default Java packaging for Linux. For many Linux distributions, the official Sun/Oracle version of Java has been packaged up as the default Java for the platform. However, due to a recent licensing change, this will no longer be the case! So, is ...

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Manipulating Files in Java 7

The following is a modified snippet from a draft of The Well-Grounded Java Developer. It gives you a quick taster of how much easier it is to manipulate files in Java 7 than in previous versions. By using the new Files class and its many utility methods, you can perform the following operations on files with only a single line ...

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GC with Automatic Resource Management in Java 7

This post provides a brief overview of a new feature introduced in Java 7 called Automatic Resource Management or ARM. The post delves how ARM tries to reduce the code that a developer has to write to efficiently free the JVM heap of allocated resources. One of the sweetest spots of programming in the Java programming language is automatic handling ...

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Java 7: try-with-resources explained

This article examines the use of the try-with-resources statement. This is a try statement that declares one or more resources. A resource is as an object that must be closed after the program is finished with it. The try-with-resources statement ensures that each resource is closed at the end of the statement. Any object that implements the java.lang.AutoCloseable or java.io.Closeable ...

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A glimpse at Java 7 MethodHandle and its usage

Due to Java’s Reflection API we have been able to inspect and alter program execution at runtime. In particular, we can observe interfaces/classes/methods and fields at runtime without knowing their names at compile time. JDK 7 introduces a new player to this dynamic/runtime inspection, the method handle (i.e. a subclass of the abstract class java.dyn.MethodHandle). Method handles gives us unrestricted ...

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