class DemoClass {
public static void main(String args[]) {
System.out.println("Start");
A a=new D();
}
}
class A {
static {
System.out.println("Static A");
A c=new C();
}
public A() {
System.out.println("Constr A");
}
}
class B extends A {
static {
System.out.println("Static B");
}
public B() {
System.out.println("Constr B");
}
}
class C extends B {
static {
System.out.println("Static C");
}
public C() {
System.out.println("Constr C");
}
}
class D extends C {
static {
System.out.println("Static D");
}
public D() {
System.out.println("Constr D");
}
}
以上代码的执行顺序如下:
Start
Static A
Constr A
Constr B
Constr C
Static B
Static C
Static D
Constr A
Constr B
Constr C
Constr D
在我看来,所有静态块都应该先执行,然后才能创建对象。但是,在这里,类A中的对象“ A c = new C()”在静态块之前创建,然后其他静态块被执行。为什么?