Rules for initializing Java fields

Class Initializebookclass {
{
field=200;
}
public int field=100;
public initializebookclass (int value) {
This.field=value;
}
Public Initializebookclass () {

}

public static void Main (string[] args) {
Initializebookclass obj=new Initializebookclass ();
System.out.println (Obj.field);

Obj=new Initializebookclass (300);
System.out.println (Obj.field);

}

}

Java is initialized in two places: initialization blocks and constructors, where initialization blocks can be divided into static and instance initialization blocks. A static initialization block is an initialization statement in a class that is decorated by static, and an instance initializes a block class without any keyword adornments.

Rules for initializing Java fields