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Top 10 Mistakes Java Developers Make

This list summarizes the top 10 mistakes that Java developers frequently make. #1. Convert Array to ArrayList To convert an array to an ArrayList, developers often do this: List<String> list = Arrays.asList(arr); Arrays.asList() will return an ArrayList which is a private static class inside Arrays, it is not the java.util.ArrayList class. The java.util.Arrays.ArrayList class has […]

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How to Fix Java Applet Security Errors

Security Errors When Loading Java Applets Did you get errors like the following when you tried to run a Java applet in the web browser? Your Java version is out-of-date. Application Blocked Application Blocked by Security Settings Your security settings have blocked an application from running with an out-of-date or expired version of Java. Your […]

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Things every Java developer must know about Exception handling

Exceptions are one of the most misunderstood (and misused) features of the Java programming language. This article describes the absolute minimum every Java developer must know about exceptions. It assumes that the reader is somewhat familiar with Java. Historical Perspective Back in the heyday of the “C” programming language, it was customary to return values such as -1 or […]

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Common Multi-threading Mistakes in Java – Calling run() instead of start()

Writing multi-threaded and concurrent programs is not easy, not even in Java.  Even senior developers, including myself, make mistakes while writing concurrent Java applications. This is also one of the trickiest area of Java programming language, where misconceptions outnumbers concepts. Considering amount of misconception an average Java programmers has about multi-threading and concurrency, I thought […]

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