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

Static block is run immediately its loaded into memory(ie.,when class is 

loaded into class loader), not when class is 

created like a constructer. Its mostly used to initialize static variables

created in a class.

It is used to create another block before the main class.

  every java codes runs here first.

  Any code gets executed before the main class

    static{

    //code is placed between these brackets.

  }

// to create static block in java 

static{

  // code to be executed is placed here

}

​

// its placed inside class. its executed whenever the class is created not when its object is created or called.