Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields ...

The example I get is the Math class. Programmers should have access to Math.sqrt(), Math.random() and other methods, ... Constructors (in java), have no ability to do this.

Java Tutorial: Strings. String Constructor Considered Useless Turns Out to be Useful After All. Use of the String(String) Constructor in Java.

In this example, the prepareByteArray method processes the Certificate object before passing it to the SuperClass constructor. With JEP 447, this process becomes more streamlined and intuitive.

This tutorial on how to use the Java Scanner for user input will quickly show you how to import java.util, take String, ... Specify the System.in as the argument for the Scanner’s constructor.