Home » Author Archives: Dustin Marx (page 3)

Author Archives: Dustin Marx

Manipulating JARs, WARs, and EARs on the Command Line

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Although Java IDEs and numerous graphical tools make it easier than ever to view and manipulate the contents of Java archive (JAR, WAR, and EAR) files, there are times when I prefer to use the command-line jar command to accomplish these tasks. This is particularly true when I have to do something repeatedly or when I am doing it as ...

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Cannot Uninstall JavaFX SceneBuilder 1.0 with JDK 8

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I was recently removing some of the software development applications, tools, and files I had used from an old Vista-based laptop because the people who are primarily using that laptop now have no interest in software development. As part of that effort, I tried to remove JavaFX Scene Builder 1.0, which I had installed a couple of years ago on ...

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Java Extension Mechanism Loads All JARs

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The Java Extension Mechanism is described in the Java Tutorial as a “standard, scalable way to make custom APIs available to all applications running on the Java platform.” As described in Understanding Extension Class Loading, “the extension framework makes use of the class-loading delegation mechanism” with extension classes loaded after the bootstrap classes in rt.jar (and related JARs) but before ...

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Java Minor Releases Scheme Tweaked Again

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In 2013, Oracle announced the Java SE – Change in Version Numbering Scheme. The announcement stated that Limited Update releases (those “that include new functionality and non-security fixes”) and Critical Patch Updates (CPUs) [those “that only include fixes for security vulnerabilities”] would be released with specific version number schemes. In particular, Limited Use Releases would have version numbers with multiples ...

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NetBeans 8.0’s Five New Performance Hints

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NetBeans 8.0 introduces several new Java hints. Although there are a large number of these new hints related to Java Persistence API, I focus on five new hints in the Performance category. The five new “Performance Hints” introduced with NetBeans 8.0 are:             Boxing of already boxed value Redundant String.toString() Replace StringBuffer/StringBuilder by String Unnecessary ...

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JavaOne 2014 Observations by Proxy

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I wasn’t able to attend JavaOne this year, but have been happy to see some online resources covering what happened at JavaOne 2014. In this post, I summarize some of the observations made at JavaOne 2014 and provide links to references providing these observations or providing more background details on those observations. The listed observations are in no particular order ...

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ChoiceFormat: Numeric Range Formatting

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The Javadoc for the ChoiceFormat class states that ChoiceFormat “allows you to attach a format to a range of numbers” and is “generally used in a MessageFormat for handling plurals.” This post describes java.text.ChoiceFormat and provides some examples of applying it in Java code. One of the most noticeable differences between ChoiceFormat and other “format” classes in the java.text package ...

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Date/Time Formatting/Parsing, Java 8 Style

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Since nearly the beginning of Java, Java developers have worked with dates and times via the java.util.Date class (since JDK 1.0) and then the java.util.Calendar class (since JDK 1.1). During this time, hundreds of thousands (or maybe millions) of Java developers have formatted and parsed Java dates and times using java.text.DateFormat and java.text.SimpleDateFormat. Given how frequently this has been done ...

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Big Java News in Late Summer 2014

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As is typical when JavaOne is imminent, there has been much big news in the Java community recently. This post briefly references three of these items (Java SE 8 updates, Java SE 9, and Java EE 8) and a “bonus” reference to a post I found to be one of the clearer ones I have seen on classpath/classloader issues. String ...

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Java Numeric Formatting

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I can think of numerous times when I have seen others write unnecessary Java code and I have written unnecessary Java code because of lack of awareness of a JDK class that already provides the desired functionality. One example of this is the writing of time-related constants using hard-coded values such as 60, 24, 1440, and 86400 when TimeUnit provides ...

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