In Java why we write public static void main(String args[])
why not main()?
- 46 Answers
- 96719 Views
- Aptech, GE Healthcare, Infosys, Microsoft, New Horizon, Practical Viva Questions, TCS, Wipro, I also Faced
- E-Mail Answers
Answer Posted / gowrishankar
The Main method is the method in which execution to any java
program begins.
A main method declaration looks as follows:
public static void main(String args[]){
}
The method is public because it be accessible to the JVM to
begin execution of the program.
It is Static because it be available for execution without
an object instance. you may know that you need an object
instance to invoke any method. So you cannot begin execution
of a class without its object if the main method was not
static.
It returns only a void because, once the main method
execution is over, the program terminates. So there can be
no data that can be returned by the Main method
The last parameter is String args[]. This is used to signify
that the user may opt to enter parameters to the java
program at command line. We can use both String[] args or
String args[]. The Java compiler would accept both forms.
Command line argument
Any number of arguments can be passed to the java program
through command line. While running the program any things
written after the name of the class are the command line
arguments. Arguments are delimited by the space.
This sample code prints all the command line arguments to
the console.
public class CmdLn{
public static void main(String[] args) {
System.out.println("d");
for (int i = 0; i < args.length; i++)
System.out.println(args[i]);
}
}
Java CmdLn arg1 arg2 arg3 arg4
Output:
arg1
arg2
arg3
arg4
so,if we simply give the main() function program wont work
without the access specifier.
| Is This Answer Correct ? | 1 Yes | 1 No |
Post New Answer View All Answers
How to declare an arraylist in java?
What is slash r?
What are the types of java languages?
When should I use a singleton?
Does printwriter create a file?
Why does java not support pointers?
What is the difference between checked exception and unchecked exception?
What method is used to specify a container's layout in java programming?
How do you initialize an arraylist in java?
How many types of memory areas are allocated by JVM in java?
Can an interface be final?
Can we create object of static class?
What is mnemonic in assembly language?
what are the states associated in the thread? : Java thread
If two threads have same priority which thread will be executed first ?
