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Definition : Encapsulation in java is a process of wrapping code i.e data (Variables) and and processes performed on that data i.e […]

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this keyword  The this keyword can be used to refer current class instance variable. If there is ambiguity between the […]

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Super keyword : The super keyword in java is used in three ways :-  super can be used to refer […]

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final keyword final keyword is used for restrictions. It is used with variable to restrict its re assignment, it is […]

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Definition : A Constructor  is used to initialize a newly created object and is called just after the memory is […]

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 Method overloading If two or more method in a class have same name but different parameters, it is known as […]

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Class and Objects Class : A class can be defined as a blueprint or a set of instruction to build […]

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Unicode System   Unicode is a standard of defining the relevant code by using character encoding. Character encoding is the […]

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Java Naming Convention : A naming convention is a set of rules for choosing the character sequence to be used […]

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Variables in java :   Division one  based on types of value represented by a variable,variables are divided into two types:      Primitive variable:- can be used to represent primitive values.                        Ex:-int x=10;   Reference Variables:- Can be used refer objects.                          Ex:- student s=new student();   Division two     Based on position of declaration and behavior all variables are divided into three types:- Instance variables Static variables Local variables   Instance variables   If the value of a variable is varied from object to object such type of variables are called instance variables. […]

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Internal architecture of JVM   Classloader: Classloader is a subsystem of JVM that is used to load class files. Class or Method Area : Class or Method Area stores per class structures such as the runtime constant pool, field and method data, the code for methods. Heap: It is the runtime data area in which objects are allocated. Stack: Java Stack stores frames.It holds local variables and partial results, and plays part in method invocation and […]

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Difference between JDK, JRE and JVM JDK The Java Development Kit (JDK) is a software development environment used for developing Java applications and applets. It includes the Java Runtime Environment (JRE), an interpreter/loader (java), a compiler (javac), an archiver (jar), a documentation generator (javadoc) and other tools needed in Java development.     JRE The Java Runtime Environment (JRE) is a set of software tools for development of Java applications. It combines the Java Virtual Machine (JVM), platform core classes and supporting libraries. JRE is part of the Java Development Kit (JDK), but can be downloaded separately.    JVM A Java virtual machine (JVM) is an abstract computing machine that enables a computer to run a Java program. There are three notions of the JVM: specification, implementation, and instance. An instance of a JVM is an implementation running in a process that executes a computer program compiled into Java.    

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There are many places where java applications are used in real world, starting from commercial e-commerce website to android apps, […]

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What is java ? Java is a high level object oriented programming language and plateform similar to c++, developed by Sun Microsystems in 1991, but it is simpler to use than c++ and  is simplified to eliminate language features that cause common programming errors. Java is a high level, robust, secured and object-oriented programming language.

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Definition : Encapsulation in java is a means of wrapping code i.e knowledge (Variables) and and processes carried out on that knowledge […]