Java Static code block and constructor initialization sequence, javastatic

Java Static code block and constructor initialization sequence, javastatic

What is the initialization sequence of the Static code block and constructor in Java?
For example, it is also a type of question that is frequently used in pen test questions.

The three classes are ClassA, ClassB, and ClassC. B inherits from A and C from B.

public class ClassA {    static{    System.out.println("init in static A");    }    public ClassA() {    System.out.println("init in ctor A");    }}

public class ClassB extends ClassA{    static{    System.out.println("init in static B");    }    public ClassB() {    System.out.println("init in ctor B");    }}

public class ClassC extends ClassB{    static{    System.out.println("init in static C");    }    public ClassC() {    System.out.println("init in ctor C");    }}

Run it and check the result. Is it consistent with your expectation ???

Init in static
Init in static B
Init in static C
Init in ctor
Init in ctor B
Init in ctor C

Loading sequence:
Class loading-> static code block running-> static variable initialization-> corresponding constructor running

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