public static void main (String args [])
1.The public keyword is an access specifies, which allows the programmer to control the visibility of class members. When a class member is preceded by public, then that member may be accessed by code outside the class in which it is declared. In this case, main ( ) must be declared as public.
2.The keyword static allows main ( ) to be called without having to instantiate a particular instance of the class.This is necessary since main ( ) is called by the Java interpreter before any objects are made.
3.The keyword void simply tells the compiler that main ( ) does not return a value.
4.Main ( ) is the method, called when a Java application begins.
5.String args [ ] declares a parameter named args, which is an array of instances of the class String. In this case,
args receives any command-line arguments present when the program is executed.
7.With the same name as args we can?t define one more variable we will get CTE.
8.PSVM (String [] p) p is a variable which is defined as a identifier.
System.out.println ("This is a simple Java program.");
1.System is a predefined class that provides access to the system which is introduced inside java.lang package.
System class is a default class.
2.Out is the static attribute which is calling print method. Out is a static attribute inside a system class.
3.Out is a data type of print stream class that is connected to the console.
4.Out is a static attribute. Method System.out.println displays its argument in the command window followed by
a new-line character to position the output cursor to the beginning of the next line.
5.Println ( ) displays the string which is passed to it.
6.System.out.printf method (f means "formatted") displays formatted data inside a print stream class there is
Println method & printf method is available.
7.Notice that the Println ( ) statement ends with a semicolon. All statements in Java end with a semicolon..
1.The public keyword is an access specifies, which allows the programmer to control the visibility of class members. When a class member is preceded by public, then that member may be accessed by code outside the class in which it is declared. In this case, main ( ) must be declared as public.
2.The keyword static allows main ( ) to be called without having to instantiate a particular instance of the class.This is necessary since main ( ) is called by the Java interpreter before any objects are made.
3.The keyword void simply tells the compiler that main ( ) does not return a value.
4.Main ( ) is the method, called when a Java application begins.
5.String args [ ] declares a parameter named args, which is an array of instances of the class String. In this case,
args receives any command-line arguments present when the program is executed.
7.With the same name as args we can?t define one more variable we will get CTE.
8.PSVM (String [] p) p is a variable which is defined as a identifier.
System.out.println ("This is a simple Java program.");
1.System is a predefined class that provides access to the system which is introduced inside java.lang package.
System class is a default class.
2.Out is the static attribute which is calling print method. Out is a static attribute inside a system class.
3.Out is a data type of print stream class that is connected to the console.
4.Out is a static attribute. Method System.out.println displays its argument in the command window followed by
a new-line character to position the output cursor to the beginning of the next line.
5.Println ( ) displays the string which is passed to it.
6.System.out.printf method (f means "formatted") displays formatted data inside a print stream class there is
Println method & printf method is available.
7.Notice that the Println ( ) statement ends with a semicolon. All statements in Java end with a semicolon..
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