java

Why Java? Java is one of the world’s most important and widely used computer languages, and it has held this distinction for many years. Unlike some other computer languages whose influence has worn with the passage of time, while Java’s has grown. As of 2015, Java is one of the most popular programming languages in …

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Important Features Of Java Programming Language 1) Simple Java is easy to learn and its syntax is quite simple, clean and easy to understand.The confusing and ambiguous concepts of C++ are either left out in Java or they have been reimplemented in a cleaner way. Eg: Pointers and Operator Overloading are not there in java …

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What is Java virtual Machine(JVM)? Java Virtual Machine(JVM)  provides runtime environment to execute java byte code. The JVM doesn’t understand Java typo, that’s why you compile your *.java files to obtain *.class files that contain the bytecodes understandable by the JVM. JVM control execution of every Java program. It enables features such as automated exception …

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My first Java Program class Hello { public static void main(String[] args) { System.out.println (“Hello World program”); } } class : class keyword is used to declare classes in Java public : It is an access specifier. Public means this function is visible to all. static : static is again a keyword used to make …

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Java language has a rich implementation of data types. Data types specify size and the type of values that can be stored in an identifier. In java, data types are classified into two catagories : Primitive Data type Non-Primitive Data type 1) Primitive Data type A primitive data type can be of eight types : …

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Type Casting IN JAVA Assigning a value of one type to a variable of another type is known as Type Casting. Example : int x = 10; byte y = (byte)x; In Java, type casting is classified into two types, Widening Casting(Implicit) Narrowing Casting(Explicitly done) Widening or Automatic type converion Automatic Type casting take place …

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An array is a collection of similar data types. Array is a container object that hold values of homogeneous  type. It is also known as static data structure because size of an array must be specified at the time of its declaration. An array can be either primitive or reference type. It gets memory in heap …

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Java provides a rich set of operators enviroment. Java operators can be devided into following categories Arithmetic operators Relation operators Logical operators Bitwise operators Assignment operators Conditional operators Misc operators Arithmetic operators Arithmetic operators are used in mathematical expression in the same way that are used in algebra. operator description + adds two operands – …

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The command line argument is the argument passed to a program at the time when you run it. To access the command-line argument inside a java program is quite easy, they are stored as string in String array passed to the args parameter of main() method. Example class cmd { public static void main(String[] args) …

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Package are used in Java, in-order to avoid name conflicts and to control access of class, interface and enumeration etc. A package can be defined as a group of similar types of classes, interface, enumeration and sub-package. Using package it becomes easier to locate the related classes. Package are categorized into two forms Built-in Package:-Existing …

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