How to compress files in ZIP format using Java
How to compress files in ZIP format using Java. The example takes a folder or file and adds all the files and sub-folders.
How to calculate date/time difference in Java
How to calculate the date and time difference in Java using a simple method of division and remainder of division.
How to compare dates in Java
How to compare dates in Java using Date (compareTo, before, after, equals), Calendar(before, after, equals) and LocalDate(isBefore, isAfter, equals) classes.
How to install maven on macOS
How to install maven on macOS. Simple 5 steps: download, extract, path, maven settings and test.
How to create Null Object Pattern in Java
How to create Null Object Pattern in Java. Simple example using object and null object class implementation.
Raspberry Pi 3 first remote startup
How to connect remotely to Raspberry Pi 3 using ssh from Linux or MacOS or Putty from Windows.
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