Java Tutorial

In Java, applets are programs that are run within a web browser, and they can use the Graphics class to draw graphics and images within the applet....

In Java, the ActionListener interface is used to detect and respond to events related to a component, such as a button click or menu item selection....

In Java, listeners are used to detect and respond to events such as button clicks, mouse movements, or keyboard input....

In Java applets, event handling is used to respond to user actions, such as clicking a button or selecting an item from a menu. ...

Java applets are small applications that are executed within a web browser using a Java Virtual Machine (JVM). They were commonly used in the early days of the web to add interactive and multimedia content to web pages....

We are providing common Java interview questions and answers that may help you prepare for a job interview...

In Java, you can delete files using the File class. The delete() method of File class is used to delete file....

In Java, you can read files using the FileReader and BufferedReader classes....

In Java, you can create and write to files using the FileWriter and BufferedWriter classes. ...

Java File Handling is the mechanism of creating, reading, writing, and manipulating files on a file system using Java programming language....

In Java, a thread is a separate unit of execution that runs independently of other threads. Each thread represents a separate path of execution in a program....

In Java, an interface is a collection of abstract methods and constants that define a contract for classes to follow. Interfaces provide a way to define common behaviors that can be implemented by different classes without requiring them to share a common hierarchy....

In Java, abstraction is achieved through the use of abstract classes and interfaces. An abstract class is a class that cannot be instantiated, but can be subclassed by other classes. ...

In Java, an inner class is a class defined within another class....

Java method overriding is a feature that allows a subclass to provide its own implementation of a method that is already defined in its superclass. When a method is overridden, the subclass implementation of the method is called instead of the superclass implementation....

Java method overloading is a feature that allows a class to have multiple methods with the same name, but with different parameters. Overloading provides a way to create more readable and reusable code by giving the same method name to different methods that perform different tasks....

Java polymorphism is the ability of an object to take on many forms, i.e., an object can have multiple types. In Java, polymorphism is achieved through inheritance, interfaces, and method overloading/overriding....

Java inheritance is a mechanism that allows a class to inherit properties and behaviors from another class. Inheritance is one of the fundamental concepts of object-oriented programming and is used to create hierarchical relationships between classes....

Java packages are a way of organizing related classes, interfaces, and sub-packages in a hierarchical structure. They help to avoid naming conflicts, improve code organization, and facilitate code reuse....

Java encapsulation is a fundamental principle of object-oriented programming that allows classes to control their internal data and functionality, while hiding them from other classes. It is achieved through the use of access modifiers (public, private, protected, default) and methods (getters and setters)....

In Java, modifiers are keywords that are used to define the scope and behavior of classes, methods, variables, and other program elements....

In Java, a constructor is a special method that is called when an object is created. Its main purpose is to initialize the instance variables of the object....

In Java, recursion is a technique in which a method calls itself to solve a problem. Recursion is a powerful tool that allows you to solve complex problems by breaking them down into simpler sub-problems....

In Java, scope refers to the area of the program where a variable, method, or object can be accessed....

In Java, method overloading allows a class to have multiple methods with the same name but different parameter lists....

Information can be passed to methods as parameter in java. Parameters act as variables inside the method in java....

Java Method is a collection of statements that performs a specific task. It provides the reusability of code....

class variables are called as java attributes for class....

Java is an Object-Oriented Language. Java is associated with classes and objects, along with its attributes and methods. ...

OOP stands for Object-Oriented Programming in java....

Arrays are used to store multiple values in a single variable instead of declaring separate variables for each value....

The continue statement breaks one iteration, if a specified condition occurs and continues with the next iteration in the loop....

The break statement can also be used to jump out of a loop....

A "for-each" loop is used exclusively to loop through elements in an array....

The Java do-while loop is used to iterate a part of the program repeatedly, until the specified condition is true. If the number of iteration is not fixed and you must have to execute the loop at least once, it is recommended to use a do-while loop....

The Java for loop is used to iterate a part of the program several times. If the number of iteration is fixed, it is recommended to use for loop....

The Java while loop is used to iterate a part of the program repeatedly until the specified Boolean condition is true. As soon as the Boolean condition becomes false, the loop automatically stops....

The switch statement selects one of many code blocks to be executed.The switch statement contains multiple blocks of code called cases and a single case is executed based on the variable which is being switched....

Java if else statement is decision making statements. It checks one or more conditions in program....

There are three types of control flow statements in java as Decision Making statements, Loop statements and Jump statements...

Java Boolean Data Types are a primitive data type. It is used to store only two possible values, either true or false....

Java Numbers are declared by primitive data types such as byte, short, int, long, float, double, etc....

Java Strings are a sequence of characters. Strings are treated as objects in Java programming language....

Java Operators are used to perform operations on variables and values like Arithmetic Operators, Relational Operators, Bitwise Operators, Logical Operators, Assignment Operators, Shift Operator, Comparison operators, Unary Operator and Ternary Operator...

JAVA Access Modifiers is used to set access levels for classes, variables, methods and constructors...

java provides three types of variables as Local variables, Instance variables, Class/Static variables...

A data type in Java represents the size and different values that can be stored in a variable. A Java data type is a set of values and operations defined on those values....

Java Thread code...

Variable is data container which is used to store data values....

The Java comments are the statements in a program that are not executed by the compiler and interpreter....

Learn java syntax ,class, object, method and variable using Java Program...

JVM is called as Java Virtual Machine...

JDK is an acronym for Java Development Kit. The Java Development Kit (JDK) is a software development environment which is used to develop Java applications and applets...

How to set path in Java?...

How to install Java?...

what are differences between C++ and Java?...

Java is an object oriented language works on different platforms like Windows, Mac, Linux etc....