Get a deep dive into using method references in your Java programs, including stream operations, event listeners, and constructors and factories.

This post explains how to call a method in Java. Learn how to define methods, call them from other classes, and pass arguments!

Learn how to use synchronous and asynchronous callbacks in Java—including callbacks with lambda expressions, CompletableFuture, and more.

How to printf a Java String To use the Java String printf method to format output text, follow these rules: Use %s as the printf String specifier in the text string being formatted. Use %S as the ...

Hold the value of the String length in a variable for future use Java String length method () The Java String class contains a length () method that returns the total number of characters a given ...