Syntax of valid .java file.

Syntax of valid .java file

package p1; --------->>     package Declaration

import my package.*; --------->>     package importing

@TestAnnotation --------->>     use the annotation

class <Class_name>

{

Variable declaration;

Method declaration;

}

Components of the our 1st program Demo.java

class Demo

class    ---------->>          keyword

Test     ---------->>          identifier (user defined name)

public static void main(String []args)

public    --------->>        Access specifier                        ----------->>           keyword

static      --------->>        Access modifier                       ----------->>           keyword

void       --------->>        Return type of main method     ----------->>           keyword

main       --------->>        Method name

String    ---------->>       Library class of java

[]args     ---------->>       Identifier(name of Array)

System.out.println();

System     --------->>        Library class

out           --------->>        Object of PrintStream class

println      --------->>        Method of PrintStream

Println: - after println the statement println place the cursor on the new line.

System.out.print();

Print: - It wills the cursor in same line after printing the same line.