Java Static Block 的调用时机

public class StaticTest {
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		//A a = null;// new A();// TODO Auto-generated method stub
		A a = new B();
		A b = new A();
		B bb = new B();
	}
}
class A {	
	static {
		System.out.println("static A ");
	}
	public A(){
		System.out.println("construct A");
	}
}

class B extends A{	
	static {
		System.out.println("static B");
	}
	public B(){
		System.out.println("construct B");
	}
}

console output：

 

static A 

static B

construct A

construct B

construct A

construct A

construct B