How to read and write JSON with json-simple
How to read and write JSON with json-simple library. Full example how to create an object, write it to a file, read it and use it.
Luhn algorithm implementation in Java
Luhn algorithm implementation in Java with example for both calculate the check digit and validate the number.
How to prepare a Windows Java Development Machine
How to prepare a Windows Java Development Machine using Eclipse, NetBeans, Ant, Maven, MySQL, MongoDB, GIT, SVN.
How to sleep a thread in Java
How to sleep a thread in Java using Thread.sleep() method. Comparison between sleep millis an nanos.
How to get free disk space in Java
How to get free disk space in Java using File.getFreeSpace(), File.getTotalSpace() and File.getUsableSpace().
How to convert byte size into human readable format in java
How to convert byte sizes into human readable format using Java. Convert from Kilobyte to Yottabyte.
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