what do you mean by static block in java

Question

Coming from C++, have no idea about static block? Please help!

Answer 1

Static block is used for initializing the static variables.This block gets executed when the class is loaded in the memory. A class can have multiple Static blocks, which will execute in the same sequence in which they have been written into the program.

Example:

Here both the static variables were initialized before we accessed them in the main method.

class Example{
   static int n;
   static String str;
   static{
      n = 97;
      str = "Static keyword in Java";
   }
   public static void main(String args[])
   {
      System.out.println("Value of num: "+n);
      System.out.println("Value of mystr: "+str);
   }
}