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Monitoring Disk Usage and Other Metrics in Java 1. Overview In this quick tutorial, we’ll be discussing how to monitor key metrics in Java. We’ll focus on disk space, memory usage, and thread data – using only core Java APIs. In our first example, we’ll make use of the File… Continue Reading java-metrics
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Differences Between Collection.clear() and Collection.removeAll() 1. Overview In this quick tutorial, we’ll learn about two Collection methods that might seem to do the same thing, but aren’t: clear() and removeAll(). We’ll first see the method definitions and then use them in short examples. 2. Collection.clear() We’ll first dive into the Collection.clear() method. Let’s check… Continue Reading java-collection-clear-vs-removeall
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Graphs in Java 1. Overview In this tutorial, we’ll understand the basic concepts of a graph as a data structure. We’ll also explore its implementation in Java along with various operations possible on a graph. We will also discuss the Java libraries offering graph implementations. 2. Graph Data Structure A graph is… Continue Reading java-graphs
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Changing the Order in a Sum Operation Can Produce Different Results? 1. Overview In this quick article, we’re going to have a look at why changing the sum order returns a different result. 2. Problem When we look at the following code, we can easily predict the correct answer (13.22… Continue Reading java-floating-point-sum-order
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A Guide to the ResourceBundle 1. Overview Many software developers, during their professional careers, face an opportunity to develop multilingual systems or applications. These’re usually destined for end-users from different regions or different language areas. It’s always challenging to maintain and extend these applications. An ability to operate with various… Continue Reading java-resourcebundle
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A Guide to OptaPlanner 1. Introduction to OptaPlanner In this tutorial, we look at a Java constraint satisfaction solver called OptaPlanner. OptaPlanner solves planning problems using a suite of algorithms with minimal setup. Although an understanding of the algorithms may provide helpful detail, with the framework performing the hard work for… Continue Reading opta-planner
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Connecting Through Proxy Servers in Core Java 1. Introduction Proxy servers act as intermediaries between client applications and other servers. In an enterprise setting, we often use them to help provide control over the content that users consume, usually across network boundaries. In this tutorial, we’ll look at how to… Continue Reading java-connect-via-proxy-server
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JDK Configuration for Maven Build in Eclipse 1. Overview The Eclipse IDE is one of the most common tools for Java application development. It comes with default settings that enable us to build and execute our code right away within the IDE. However, these default settings are sometimes not sufficient… Continue Reading maven-eclipse-jdk-configuration
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Logistic Regression in Java 1. Introduction Logistic regression is an important instrument in machine learning (ML) practitioner toolbox. In this tutorial, we’ll explore the main idea behind logistic regression. First, let’s start with a brief overview of ML paradigms and algorithms. 2. Overview ML allows us to solve problems that… Continue Reading java-logistic-regression
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Java – Append Data to a File 1. Introduction In this quick tutorial, we’ll see how we use Java to append data to the content of a file – in a few simple ways. Let’s start with how we can do this using core Java’s FileWriter. 2. Using FileWriter Here’s… Continue Reading java-append-to-file
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