Answers for "java main class run method"

run a java class without main method

//This is prior to Java 7
class StaticInitializationBlock{
   static{
      System.out.println("class without a main method");
      System.exit(0);
   }
}

main method java

public class Test {

static void main(String[] args){

	System.out.println("Hello World");
	
}
}