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Author Archives: Ioannis Makrygiannakis

John is an undergraduate student at the Department of Informatics of Athens University of Economics and Business. He is specialized in Databases, Knowledge Management, Information Systems and Information Security. In his free time he loves learning new things with regard to programming and network security.

How to deal with java.lang.outofmemoryerror: java heap space

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In this article, we will show you how to deal with java.lang.outofmemoryerror: java heap space. Firstly, we will talk about what is java.lang.outofmemoryerror in general, and for what reason this might be caused. After that, we will show examples of how to solve this problem. 1. Introduction In every Java application/program dynamic memory binding is required, in order to acquire ...

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Java Check if file exists

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In this article, we show how to check if a file exists in Java. First, we talk about what is the java.io.File.exists() method and how you can use it. Then we analyze how to check if a file is readable, writable, and executable. 1. Introduction The Files.exists() and Files.notExists() are methods that test if a file or a directory exists ...

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