Java 8 BiPredicate Examples
In Java 8, BiPredicate is a functional interface, which accepts two arguments and returns a boolean, basically this BiPredicate is same with the Predicate, instead, it takes 2 arguments for…
Java 8 Predicate Examples
In Java 8, Predicate is a functional interface, which accepts an argument and returns a boolean. Usually, it used to apply in a filter for a collection of objects.
Java 8 Consumer Examples
In Java 8, Consumer is a functional interface; it takes an argument and returns nothing. It can act as Higher Order Function, so we can accepts Consumer as an argument,…
Java 8 forEach examples
In Java 8, we can use the new forEach to loop or iterate a Map, List, Set, or Stream. Review the forEach method signature, it accepts a functional interface Consumer.…
Java – Add new line in String
Different operating system has a different new line or line separator string: UNIX, Linux or Mac OSX = \n, Windows = \r\n . We can also use the Java 1.7…
Java 7 try-with-resources example
Before Java 7, we can close a resource with finally. In Java 7, a new try-with-resources approach is introduced, it helps to close resources automatically.
Java – How to read input from the console
In Java, there are three ways to read input from a console : 1 - System.console (JDK 1.6), 2 - Scanner (JDK 1.5), 3 - BufferedReader + InputStreamReader (Classic). Since…
How to get the standard input in Java
A quick example to show you how to read the standard input in Java.
How to check if directory is empty in Java
Here’s an example to check if a directory is empty.