Java-oops concepts

We have discussed the access modifiers in Java which controls visibility and accessibility. This post will discuss the Non-access modifiers of Java. Non-access modifiers change the default behaviour of a Java class and its members. Non-access and access modifiers can be used together, but not all non-access modifiers can be used with access modifiers. We […]

Earlier, we discussed the Java objects and classes, and now we will talk about the object life cycle in Java. An object’s life cycle starts when it’s created until it goes out of scope or dereferenced. Various stages in the object’s life cycle – Object is created Object is accessible Object is inaccessible And finally,

In this post, we will look at whether we can overload or override the main method in Java? But first, we would recommend you read the articles about method overloading and method overriding to understand these concepts. Can we overload the main method in Java? Can we override the main method in Java? Let’s look

In our previous article, we learned about the inheritance feature of Object-Oriented Programming, where a subclass or a child class inherits the properties of the superclass or the parent class. In this way, the subclass will have access to all of the variables and methods of the superclass unless they are private. But now, what

Inheritance is one of the pillars of the OOP ( Object Oriented Programming), and it is almost everywhere in Java. Inheritance is the mechanism through which a class can inherit another class’s properties ( variables and methods ) and saves us from writing the code again for the new class. Before starting, let’s get familiar

There are two modifiers in Java – access modifiers and non-access modifiers. In this post, we will discuss the access modifiers in Java. There are four types of access modifiers in Java – Public Access Modifier Private Access Modifier Protected Access Modifier Default Access Modifier or No modifier The below table describes their access through

Classes and Objects are at the heart of every Object-oriented programming language and java is not an exception. What is a class? Class is a template or blueprint that describes the kinds of state and behavior that objects of its type support. What is an object? An object is an instance of a class and

Method overloading is an oops concept where two methods have the same name but different parameters. In method overloading, we can have parameters that can match multiple overloaded methods. In this case, the compiler will select the most specific method and call it. But if there are two specific methods and the compiler cannot decide

Method overloading in java allows multiple methods to have the same name but with different numbers or types of parameters. Methods return type may or may not match. Example Return Type in Overloading In java method overloading, the return type of method is not considered. Only the number of arguments or their data types are

In this post, we will discuss equals() and hashcode() methods defined in the Object class of Java. We will also learn how to use them while creating our own classes. Even though both of these methods have their own significance and yet they have a dependency on each other. equals() and hashcode() methods are defined