Java program initialization sequence

Java program initialization generally follows three principles:

1. Static takes precedence over non-static.
2. The parent class takes precedence over the child class.
3. Initialize in the defined order.

The specific initialization sequence is as follows:

1. Parent static variable
2. Parent static code block
3. Subclass static variables
4. Subclass static code block
5. Parent non-static variable
6. Parent non-static code block
7. Super class constructor
8. Subclass non-static variables
9. Subclass non-static code block
10. Subclass construction method