Stream:-
      Stream is a intermediator among input, output and user. All streams 
are represented by class in java.io package.
Streams are classified into two types
1) Input Stream
2) Output Stream

Input Stream:
   Data is received from input devices in sequences then it is called "input stream"
 or "Source Stream"
EX:- Keyboard

Output Stream:
   Data is passed output devices then it is called "output stream" or "Destination stream".
EX:- Monitor

Member Operator:-
    
This operator is also called as dot operator and it will represents
 the members of a package or class.

Syntax:- packagename.classname

Eg:- java.lang.System
     java.lang.String

 Every class have variables and members, we are using dot operator to represent 
the variable of a class and method of a class.


Syntax 1:-

  Variables of a class

classname.variable name

Eg:- System . out
     System . err

Syntax 2:-
 Methods of a class

classname.method name

Eg:- Math . Sqrt()

New Operator:-
          New operator is used for creating a object to the class.

 Syntax:- 
   class name obj = new class name();

Eg:- Employee e = new Employee();

Cast Operator:-
       It is used to convert the data from one data type to another data type.

Eg:- double q = 26.546;
     int x  = (int)a;

Lets see a example program on cast operator

class Cast 
{
public Static void main(String args[]);
{
double a = 26.546;
System.Out.println("the value of a=" +a);
int x=(int)a;
System.Out.println("the value of x=" +x);
}
}

Unary Operator
 
   The Unary Operators are as follows....
=> -
=> ++
=> --

We will see a program in JAVA on Unary Operators

class Unary
{ 
Public Static void main(Sring a[])
{
int a=10;
System.Out.println("the value of a="+a);
System.Out.println("the value of -a="+(-a));
System.Out.println("the value of ++a="+(++a));
System.Out.println("the value of a="+a);
System.Out.println("the value of a++="+(a++));
System.Out.println("the value of a="+a);
System.Out.println("the value of --a="+(--a));
System.Out.println("the value of a-- ="+(a--));
}
}

Can anyone predict the output of the program????????

Lets see about the remaining operators in our next post.
Have a tremendous Tuesday......

Increment and Decrement Operator:-
    

Increment Operator(++) :-
                    ++ is called increment operator and it is increases the
variable by '1'(one).
Java is supported to two types of increment operators:-
1) pre increment operator
2) post increment operator 
 
Pre increment operator:
   The ++ is placed before the variable then it is called pre increment operator.
Eg:- ++a, ++s

Post increment operator:
   The ++ is placed after the variable then it is called pre increment operator.
Eg:- a++, b++

Decrement Operator(++) :-
                      -- is called decrement operator and it is decreases the
variable by '1'(one).
Java is supported to two types of increment operators:-
1) pre increment operator
2) post increment operator 
 
Pre decrement operator:
   The -- is placed before the variable then it is called pre increment operator.
Eg:- --a, --s

Post decrement operator:
   The -- is placed after the variable then it is called pre increment operator.
Eg:- a--, b--

Boolean Operator:-
    
The following are the logical operators:-
* &
* |
* !

Boolean AND

Truth Table

        C1       C2      Output
       True    True     True
       False   True     False
       True    False    False
       False   False    False

  From the above table, we understand that the condition 1 and condition 2
are true then the output will be true,
otherwise it will be false.

Boolean OR

Truth Table

        C1       C2      Output
       True    True     True
       False   True     True
       True    False    True
       False   False    False


  From the above table, we understand that the condition 1 and condition 2
are false then the output will be false,
otherwise it will be true.

Boolean NOT

Truth Table

        C      Output
       True     False
       False    True

  From the above table, we understand that the condition is true then the output is
 false, if the condition is false then the output is true.

Logical Operator:-
    
The following are the logical operators:-
* &&
* ||
* !

Logical AND

Truth Table

        C1       C2      Output
       True    True     True
       False   True     False
       True    False    False
       False   False    False

  From the above table, we understand that the condition 1 and condition 2
are true then the output will be true,
otherwise it will be false.

Logical OR

Truth Table

        C1       C2      Output
       True    True     True
       False   True     True
       True    False    True
       False   False    False


  From the above table, we understand that the condition 1 and condition 2
are false then the output will be false,
otherwise it will be true.

Logical NOT

Truth Table

        C      Output
       True     False
       False    True

  From the above table, we understand that the condition is true then the output is
 false, if the condition is false then the output is true.