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In Java, a package is a container for a collection of classes, sub-packages, and interfaces. The package keyword is used to create a package in java. Packages are used for the following purposes: Keeping naming conflicts at bay. For example, in two packages, college.staff.cse.Employee and college.staff.ee.Employee, there could be two classes named Employee. Making it easier to […]
June 3, 2022 | Java | No comments
The instanceof operator is used to determine whether or not a reference variable contains a specific type of object reference. Because it compares the instance to the type, the instanceof operator in Java is also known as the type comparison operator. It either returns true or false. We get false when using the instanceof operator […]
June 3, 2022 | Java | No comments
In Java, the final keyword is used to restrict the user. The final keyword in Java can be used in a variety of situations. Finally, you could say: variable method class The final keyword can be used with variables to create a final variable with no value. It’s also known as an uninitialized final variable […]
May 28, 2022 | Java | No comments
In Java, the static keyword is mostly used to control memory. It is also used to share a class’s identical variable or method. Static keywords can be used with variables, methods, blocks, and nested classes. The static keyword refers to a class rather than a specific instance of that class. A constant variable or a […]
May 28, 2022 | Java | No comments
Garbage collection is the method through which Java programs maintain their memory automatically. working: Java programs are compiled into bytecode that may be executed by a Java Virtual Machine, or JVM. Objects are produced on the heap, which is a part of memory dedicated to the Java application, while it runs on the JVM. Some […]
May 28, 2022 | Java | No comments
this is a Java keyword that refers to the current object of a class. Uses of this keyword: The following are some examples of how to utilize this keyword: this can be used to refer to the current instance variable of a class. this can be used to call the method of the current class […]
May 27, 2022 | Java | No comments
In Java, there are numerous distinctions between method overloading and method overriding. The following is a list of the differences between method overloading and method overriding: No. Method Overloading Method Overriding 1) To make the program more readable, method overloading is used. Method overriding is used to provide a specific implementation of a method that […]
May 25, 2022 | Java | No comments
Polymorphism: Polymorphism is a Java concept that allows us to perform a single action in multiple ways. Polymorphism is made up of two Greek words: polymorphism and morphism. The words “poly” and “morphs” both mean “many.” Polymorphism denotes the presence of multiple forms. Types of polymorphism: compile-time polymorphism runtime polymorphism. Polymorphism in Java is achieved […]
May 25, 2022 | Java | No comments
In Java, method overriding occurs when a subclass (child class) has the same method as the parent class. Overriding is a feature that allows a subclass or child class to implement a method that is already provided by one of its super-classes or parent classes. When a subclass’s method has the same name, parameters, signature, […]
May 21, 2022 | Java | No comments
Method Overloading in Java: Method Overloading occurs when a class has multiple methods with the same name but different parameters. Compile-time (or static) polymorphism is linked to overloading. The readability of the program is improved by method overloading. We don’t have to develop new names for functions that do the same thing. Overloading the method […]
May 21, 2022 | Java | No comments