Why we use static and init block in java?

static blocks are those which runs whenever that class is loaded. these blocks are used to perform an action which we want to run when a class is loaded. for eg when we want to show a msg on class load we put the msg in static block.

init block are those which run whenever an object is created. These blocks are used when we want some task to run whenever an object is created. init blocks always run before the constructor

If we want to run a block before the execution of main method then we are using static method..

when we want run an object during its object creation then we are using init block.

in order to initialize the values of static variable while the class loader loads the class and before reaching the runtime phase. becuase you want the value to be avilable for all objects before the objects are created.