Category: Java

No main manifest attribute, in jar

Problem Sometimes you face the following error while runing an executable jar : No main manifest attribute, in “<APP_NAME>.jar” Solution Main-class property is missing on your jars META-INF/MANIFEST.MF. Correct it by adding the following...

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Write properties file in Java

Properties file are often used in Java applications in the aim to store configuration parameters, internationalization and various informations. Each line of a properties file is a key/value entry. The key and the value...

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Read properties file in Java

Properties file are often used in Java applications in the aim to store configuration parameters, internationalization and various informations. A properties file have « .properties »  as extension where each line is a key/value...

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How to write file in Java

In this post, you will lean how to write file in Java. 4 various ways will be used : BufferedWriter PrintWriter Using Try with resources Using fileUtils from Apache commons IO 1- BufferedWriter Since...

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How to read file in Java

In this tutorial, we will learn how to read file in Java. 4 easy ways will be used : BufferedReader Scanner Using try with resources Using fileUtils from Apache commons IO

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