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Structural – Composite Design Pattern

Composite is a Structural Design Pattern that is used when two child classes have a common parent class and one of those 2 classes can contain the other class and itself inside the class. For example, let’s take “a file” and “a folder”. Both are data. Therefore “Data” is the parent class. But “a folder” […]

August 3, 2020

JAVA Basics

Part 17 – Java Arrays (2D arrays)

2D (two-dimensional) array is a multidimensional array. A multidimensional array is an array of arrays. 3D array also a multidimensional array, but rarely using. Today we are going to learn about 2D arrays. Before we learn about 2D arrays, make sure you know about java arrays. You can follow the link given below to study […]

August 2, 2020

Design Patterns

Structural – Bridge Design Pattern

Bridge Pattern is a Structural Design Pattern that lets you to separate one large class into two separate hierarchies Abstraction and Implementation that can be developed independently. It increases the loose coupling between class abstraction and its implementation. Let’s see an example on bridge pattern in java. Observe the bridge between “Shape” and “Colour” […]

August 2, 2020

JAVA Basics

Part 16 – Java Arrays (Declaration)

An array is a collection of variables from the same type. Arrays are using for multiple purposes. There are several types of cases we can see in an array declaration. Let’s see what are those with simple examples. Case I There are 2 steps to make an array. Array address is making from the array […]

August 1, 2020

Design Patterns

Structural – Adapter Design Pattern

Adapter pattern is a Structural Design Pattern that allows 2 incompatible interfaces to work together according to the client’s requirement without changing the existing code. Adapter Design Pattern is also known as Wrapper. Below given is an example in java to understand about adapter pattern. Let’s assume that you are short on toycat object and […]

August 1, 2020

JAVA Basics

Part 15 – Java Methods (Rules for methods)

In the last 2 articles of Java methods you learned about the types of java methods and method-call stack. Before you going to the today’s topic (rules for methods) you can go to the link given below to take look at on the last 2 articles. Part 13 – Java Methods (Introduction) Today we are […]

July 31, 2020

Design Patterns

Structural – Decorator Design Pattern

Decorator Pattern is a structural design pattern. If we want to add behaviors during the runtime for an object, we can use decorator pattern. In other words, we can extend the functionalities of the structure of program without changing the structure. Let’s discuss about the decorator design pattern using an example in java. Here I […]

July 31, 2020

JAVA Basics

Part 14 – Java Methods (Method-call stack)

Hi guys, welcome back. In the last article we discussed about the types of java methods. you can go to the link given below to take look at on the last article. Today we are going to learn about the method- call stack under the topic java methods. Let’s identify the method-call stack by step […]

July 30, 2020

Design Patterns

Structural – Facade Design Pattern

Facade Design Pattern is categorized under Structural Design Patterns. A facade is an object that provides a simplified interface to a larger body of code. We can use facade design pattern to make a software library easier to use, understand and test. Also make the library more readable. Let’s start to discuss about the facade […]

July 30, 2020

JAVA Basics

Part 13 – Java Methods (Introduction)

Introduction: If you want to use a code again and again repeatedly you can write the code in a method and call it in the main method. There are 3 types of java methods. Let’s see what are those methods. Method I (Non-parameterized) Here the method name is “printAddress()”. You can write any code inside […]

July 29, 2020

Design Patterns

Creational – Builder Design Pattern

Builder Pattern is a creational design Pattern that used to create objects made from bunch of other objects. The advantages of builder pattern are, You can see clear separation between construction and representation of an object. Provides better control over construction process. Supports to change the internal representation of objects. To create a program of […]

July 29, 2020

JAVA Basics

Part 12 – Nested Loop & Java Switch

In the last article we discussed about Java loops. You can check that part using the link given below. Nested Loop in java If a loop exists inside the body of another loop, It’s called a nested loop. And also called as “loop inside loop”. Let’s see an example. Here a for loop is inside […]

July 28, 2020