Deep Dive Into Java

Operators Operators are used to perform some operations. Operators are special symbols that works with variables and constants in java. These symbols performs specific operation and gave result accordingly. Operators work with Operands. For Eg: a + b; Here a, b are Operands to which operation is to be performed,          + is Operator symbol. To work with operators 3 things must be noticed before using them i.e. Use of operator. Type of operand you are using. Result of operation. Unary Operators   : These type of operators required only one operand. For e:. +, -, ++, -- Binary Operators  : These type of operators required two operands to perform some operation. For eg: +, -, *, =, >, <, && etc. Ternary Operators :  These type of operators required three operands to perform some operation. For eg: :? Arithmetic Operators :           Arithmetic operato...

Literals Literal is the value that we pass in the variables. In other words, Literals are syntactic representation of boolean,numeric,character and string type. These values can be fixed or constant and are stored in the variable. Generally literal are categorized into two types i.e. Numeric Literals and Non Numeric Literals. Integer Literal : They includes - int, short, long, byte. These are the value without any decimal. Int is default type of integer. if any value is out of range in integer literal then compiler will consider that value as int and generates an error. To represent any value in long L/l will be used at the end. There are 4 integer Literals type i.e. Decimal, Octal, Hexadecimal, Binary(added in java 7)  Decimal Literals has base 10 i.e from 0 to 9.          They must not be started with 0. Example :          int a = 111;          it will print 111 Octal...

Keywords Keywords are the words that are already defined in language. They are also known as Reserved Words. They are created for specific use ,their working cannot be changed.In java programming language there are 50 reserved words that have different meaning in java. Initially there are 49 keywords in java till java 1.4 and then "enum" is added with java 1.5 i.e. java 5 keywords are defined in lower case only. keywords cannot be used as a variable, method, class. List of these 50 java keywords are -  abstract       continue       for                        new                       switch assert          default        goto         ...

 Data Types     There are different types of data used by programmers in java like Numbers, Alphabets, Images etc. Computer does not know the difference between values like number or alphabets.Each type of data will be categorized into different types which are known as Datatypes in java. Thus, Datatype is a classification of data according to its type that an object or a variable can hold. It is a kind of data storage that contains specific type or range of value. Whenever variable is created a storage is assigned to it according to the datatype. Two main concepts of Datatypes are - Type of data. Size allocated to it. It is classified into two main categories i.e Primitives and Referenced .  There are 8 Primitive Type Datatypes and 4 Referenced Datatypes i.e Primitives Datatypes - These are built-in or predefined by the language and their definition cannot be changed. byte short char int long float double boolean Referenced Dat...