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Gradle Goodness: Continue Build Even with Failed Tasks

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If we run a Gradle build and one of the tasks fails, the whole build stops immediately. So we have fast feedback of our build status. If we don’t want to this and want Gradle to execute all tasks, even though some might have failed, we use the command line option --continue. When we use the --continue command line option ...

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On heap vs off heap memory usage

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Overview I was recently asked about the benefits and wisdom of using off heap memory in Java. The answers may be of interest to others facing the same choices. Off heap memory is nothing special. The thread stacks, application code, NIO buffers are all off heap.  In fact in C and C++, you only have unmanaged memory as it does not have ...

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JGit Authentication Explained

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Authentication in JGit is mostly on par with native Git. Commonly used protocols like SSH and HTTP(S) and their authentication methods are supported. This article summarizes how to use the JGit authentication API to securely access remote Git repositories. Though the examples in this article use the CloneCommand, the described techniques can be applied to all classes that connect to ...

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When Should You Move from Iterations to Flow?

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I’m writing part of the program management book, talking about how you need to keep everything small to maintain momentum. Sometimes, to keep your work small, teams move from iterations to flow. Here are times when you might consider moving from iteration to flow:             The Product Owner wants to change the order of features ...

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Self-healing JVM

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This post is an example about an application where the first solution to each and every IT problem – “have you tried turning it off and on again” – can backfire and do more harm than good. Instead of turning things off and on, we have an application that can literally heal itself: it fails at the beginning, but starts ...

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Java Servlet Tutorial – The ULTIMATE Guide (PDF Download)

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Java Servlets is a Java based web technology. Java Servlet technology provides Web developers with a simple, consistent mechanism for extending the functionality of a Web server and for accessing existing business systems. A servlet can almost be thought of as an applet that runs on the server side–without a face. Java servlets make many Web applications possible. Java Servlets ...

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Developers want to be heard

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How often have you been in this situation? You’re in a meeting with the team and you’re all discussing the implementation of a new feature. The group seems to be converging on a design, but there’s something about it that feels off, some sort of “smell”.  You point this out to the team, perhaps outlining the specific areas that make you uncomfortable. ...

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Why do we mock?

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I do Java interviews. During the interviews I ask technical question that I know the answer for. You may think this is boring. To be honest: sometimes it is. But sometimes it is interesting to learn what misconcepts there are. I happened to ask during the interview what you can read in the title: “Why do we mock?”. The answer ...

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