Bikash Mainali
Order of execution in Java

Order of execution in Java

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Bikash Mainali
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package executionorder;


// initialization order:
// 1. static variable and static initialization blocks in which they are ordered.
// 3. instance variable and object initialization block in which they are ordered.
// 5. constructor

//"this" is initialized immediately after all static initialization has occurred (and before any instance variables are initialized)
//Static fields are initialized only once; static blocks executed only once
//NOTE: object initialization is called after all static methods are called and before constructor is called. There should be a constructor call.
public class InitializationBlock {

    private static int nextId;
    private int id;
    private static String name;

    int test = 10;
    InitializationBlock a =  this;

    //object initialization block
    {
        id = nextId;
        nextId++;
    }

    //static initialization block
    static {
        name = "Bikash Mainali";
    }

    InitializationBlock() {
        System.out.println("constructor call");
    }

    static {
        nextId = 1000;
    }

    public static void main(String[] args) {
        new InitializationBlock();
    }
}
Java