Chapter 5 What is Syntax of Java/ Keywords/ Comments Explain in Details.

 Syntax Of Java Program :- 

What is Syntax:- It is a code of word excited rule of Program then say at last it is a format of Program

.

class Easy {

            public static void main(String[] args) {

                System.out.println("Hello World");

            }

        }

class	1.It is a keyword which is used to declare a class. 2.Keyword:The word which is predefined in the library is called keyword. for example class, void, main etc.
Easy	1.It is an user defined class name.
public	1.It is a keyword which is called access specifier/modifier. 2.It is used to provide accessibility of data member(variable) and member function.
static	1.It is a keyword. 2.It can be used with a variable or function or block, we will discuss it in next chapter.
Void	1.It is a keyword. 2.It indicates that there is no value is returning by the function. 3.If we use any other keyword like int, float, char etc,  in place of void then we will use return keyword.
main()	1.It is the function which is called the entry point of any program. 2.The execution of any program starts from the main function. 3.If in a program there is only one function then it should be main function.
String[]args	1.It is an array of type String. 2.It is also called command line argument. 3.you can write anything in place of args
System.out.println() or print, printf()	1.It is used to print data or information on to the output screen. 2.System.out means Standard output object. 3.println is a method/function.

 I think follow this table explain hope your doubts your clear.

Keywords in Java 

• The keyword which is pre-defined in the library is called keyword. It's functionality is also pre-defined.
• Keyword can not be used as a varible,  function_name, class_name or as any identifier. 
• Example of Keywords are int, float, char, void, main etc.

List of Keywords  in Java 

Char	Continue	Catch	Finally
Int	Default	Interface	Class
Float	Assert	Abstract	Const
Double	Abstract	Public	Protected
Long	Implements	Bytes	Case
Short	Private	Native	Goto
If	Break	Volatile	New
Else	Enum	Synchronized	Static
Do	Import	Switch	This
While	Strictfp	Transient	Try
For	super	Throws	Final
Instanceof	Extends	Boolean	Pakage
Return	Void

Comments in Java 

• It is used to explain the code to make it more readable.
• It is not considered as a part of program. 
• In other word we can say that compiler ignores the comments.
• Java comments are statements that are not executed by the compiler.

Types of comments in Java

• Single line comment
• Multiline comments

Single line comment :- 

• It is used to comment only one line.
• Two forward slashes(//) is used for single line comment.
• Single line comment starts with double forward slashes.

//this is a single line comment

System.out.println("you are excellent");

Multi line comments:- 

• Multiline comment is used to comment a block of code.
• Multiline comment statrts with /* and ends with */.
• The text between /* and */ is not executed by the compiler.
• An Example of Program 

        class Easy {

            public static void main(String[] args) {

/*

This is multiline comment

Write a program to add

two number and store it

in third number

*/

        int x, y = 10, z = 30;

                x = y + z;

                System.out.println("Add=" + x);

            }

        }

        /*

        Output is:

        Add=40

        */