Hadoop’s default output delimiter (character separating the output key and value) is a tab ("\t"). This post explains how to change the default Hadoop output delimiter. Output Delimiter Configuration Property…
Occasionally when programming in Java you will need a List too large to hold in memory. MapDB is an open source Java library that allows you to create a disk…
Occasionally when programming in Java you will need a Map too large to hold in memory. MapDB is an open source Java library that allows you to create a disk…
What are Java Streams? A Java stream is a sequence of elements of a specific type that are consumed from a source like Collections, arrays, or I/O resources. Streams are…
The Java Supplier interface of the java.util.function package is a functional interface that is often used as an assignment target for lambda expressions. The get() method is the class’s only…
The Java Function interface of the java.util.function package is a functional interface that is often used as an assignment target for lambda expressions. The apply(T t) method is the class’s…
The Java Predicate interface of the java.util.function package is a functional interface that is often used as an assignment target for lambda expressions. The test(T t) method is the class’s…