static block will execute when ever execution starts, it 
means this block executes first of all, where as static 
block have to call seperately and also it can call with out 
object instance.

Static Block  is executed when the Program starts.

Example :

public class StaticExample {

	static{
		System.out.println("Hello");
	}
	
	public static void main(String args[]){
		
	}
}

When we run this program it will print Hello.

Static Methods are executed when those methods are called 
from another static class or method

Example :

public class StaticExample {

	static void printString(){
		System.out.println("Hello");
	}
	
	static void testStaticMethod(){
		printString();
	}
	
	public static void main(String args[]){
		testStaticMethod();
	}
}

i  think  static block is  executed, when  the  class is 
loaded.That  means  at  the  time  of  compile time.so  that
 block  sill executed  first.

where as static method have to call seperately and also it
can call with out object instance.so it executed when run time.

public static void main(string args[])
is also static method do u call this method?

static block is used to initialize the variables during the 
JVM startup.
static methods are getting called with out creation of any 
instance.

As soon as the class is loaded, the static block will be 
executed. Where as the static method should be called 
explictly.

Static blocks execute first n than static method.It means 
static block have high priority compare to static method

static block will be called at the time of loading the 
class.it can be called once.developer can not be called 
expecitly
static method will called at the time of loading the 
class.here we can call expecitly by using there classname

Static block is executed when the class which contain static
block is loaded in to memory and static method is executed
when it is called. Mostly static block is used for
Initialization of static members.