这个结构初始化是如何工作的？

int[] numbers = {1, 2, 3, 4, 5};

int[] numbers = new int[5];
numbers[0] = 1;
numbers[1] = 2;

class Person {
    String name;
    int age;

    Person(String name, int age) {
        this.name = name;
        this.age = age;
    }
}

Person person = new Person("Alice", 30);

let person = {name: "Alice", age: 30};

class Person {
    static {
        System.out.println("Class loaded");
    }
}

new Person();

class Person {
    {
        System.out.println("Object created");
    }
}

new Person();

class Parent {
    static {
        System.out.println("Parent static block");
    }
}

class Child extends Parent {
    static {
        System.out.println("Child static block");
    }
}

new Child();

Parent static block
Child static block

class Database {
    public Database() {
        try {
            // 初始化数据库连接
        } catch (Exception e) {
            System.err.println("Database initialization failed: " + e.getMessage());
        }
    }
}