beginners

In Java, inheritance is a mechanism by which one object inherits all of its parent’s properties and behaviors. It is an essential component of OOPs (Object-Oriented programming systems). You can use the parent class’s methods and fields when you inherit from an existing class. You can also add new methods and fields to your current […]

Let us take a look at various other constructors in Java. Copy constructor: A copy constructor is a type of constructor in Java that creates an object by copying another object from the same Java class. It returns a copy of a class object that already exists. If we want to, we can use the copy constructor: Make […]

Java constructors or constructors in Java are terminologies used to construct something in our programs. A constructor in Java is a special method that is used to initialize objects. The constructor is called when an object of a class is created. It can be used to set initial values for object attributes. At least one constructor is called […]

A method is a block of code, a group of statements, or a set of code that performs a specific task or operation. These are also known as functions in other programming languages. The method describes the behavior of an object. It increases code reusability. It also provides an easy modification of the code. Method Declaration: […]

The java command-line argument is a parameter that is passed to the java program when it is run. The arguments passed from the console can be received and used as input in the Java program. As a result, it provides a convenient way to check the program’s behavior for various values. We can pass any number […]

An array is a collection of variables of the same type that are referenced by a common name. Arrays consist of contiguous memory locations. The lowest address corresponds to the first element and the highest address to the last element. Need for Arrays: The primary reason for arrays’ existence is that they allow for the […]

In programming, a constant is an immutable entity. To put it another way, the value cannot be altered. In a program, we often want to give a name to a constant value. For instance, we might have a fixed tax rate of 0.030 for goods and a tax rate of 0.020 for services. These are […]

Variables represent named storage locations, whose values can be manipulated during the program run. For instance, to store the name of a student and marks of a student during a program run, we require storage locations that are too named so that these can be distinguished easily. Declaration of variables: The declaration of a variable […]

Byte Code: The Java byte code is a machine instruction for a Java processor chip called Java Virtual Machine. The byte code is independent of the computer system it has to run, i.e, Java programs are compiled, and their byte codes are produced. The byte codes are always the same irrespective of the computer system […]

In Java, you can set the CLASSPATH variable. CLASSPATH: Application ClassLoader uses CLASSPATH as an environment variable to locate and load .class files. The CLASSPATH specifies the location of third-party and user-defined classes that are not extensions or components of the Java platform. When setting the CLASSPATH, make sure to include all directories that contain […]