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You can have multiple methods with the same name as long as the number and/or types of the parameters is different.

When you pass an object to a method, you are passing a copy of the *reference* to that object. That lets you update an object's ...

An overloaded method has a different signature and is in the same class as another method. An overridden method has the same ...

Find out how constructors work when you have subclasses of subclasses.

Classes : Part 3 : Operator overloading.

In Java, you can have a two-dimensional array where each row has a different number of elements. This is called a ragged array.

Creating your first class and instantiating objects from it in Java.

Find out the limits of using casting when working with polymorphism.

Classes : Part 2 : Constructors.

Learn when to use System.out.print() and when to use System.out.println().

Composite over inheritance is an OOP design principle we've followed for several years. Like me, you might have seen it in the ...

Now, we discuss the behaviors section of a class definition, the methods that define the actions object can take. We talk about ...

ArrayLists let you store an arbitrary number of items, unlike Arrays, which have a fixed length. Here are some of the most-used ...

Quick overview of classes, objects, attributes, constructors, and methods.

Handling a two-dimensional arrays that represent a matrix of rows and columns.

The TimedTestFramework is a Java class that you can extend to implement a doTest() method. Then, you can make an instance of ...

Learn when to use -- and not to use -- exceptions.

Converting Arrays to ArrayLists, and the remove(), contains(),indexOf(), and lastIndexOf() methods.

In Java, you can have a two-dimensional array where each row has a different number of elements. This is called a ragged array.

As software architects and designers, we have a common goal: Simplicity. We want to archive success, mainly because the clarity ...