public is used so that it can be called easily from outside 
the scope of function.Static is used so that it can be 
easily called without using its object.

public means we are allowing the main method to be accessed
any where in the application.and is declared static because
jvm will look for the static one's once it completes the
loading the class.

As we know public means we can access the method from 
anywhere.Coming to static:- main() is a static method 
therefore it implies that there is no need of creating 
Object for that particular class to call this method.So 
that when ever u run the program the Jvm will search for 
main() in the class even there r no class objects created 
for this class.

public means-accessable from anywhere
static means-the point ,from where compilar can start its 
compilation without object.

In the main function generally we are using
public static void main(String args[])
that means public is used for call method without being the
member of the class.
and static is used for to call method directly with no need
of the object creation.

As we know public means we can access the method from 
anywhere. in a java we want call method by using class 
object. But main() is also method .that main() is there one 
class but jVM execute program trough main() method with out 
creating object main() method call thats way we use public 
static the main function
thanks& regargs
RAMESH

if we don't use public in main method jvm is looked for main
method but does not found.so run time error will occurred
"main() method must be declared as public". why its static
means in java we can execute methods with object.if we use
static it will execute without object.