java父类和子类初始化顺序的深入理解

继承类的构建过程是向外扩散的，子类初始化了，父类一定也初始化了

class art{
 art(){
  system.out.println("art");
 }
}
class drawing extends art{
 drawing(){
  system.out.println("drawing");
 }
}
public class cartoon extends drawing {
 cartoon(){
  system.out.println("cartoon");
 }
 public static void main(string[] args) {
  art cartoon = new cartoon();
 }
}

输出为：

art
drawing
cartoon