示例记录

Posted 2020-11-26 a-fei

1、写出示例的执行结果

 1 public class ClassA {
 2 
 3     public ClassA(){
 4         System.out.println("Class-A");
 5     }
 6     {
 7         System.out.println("Class-A:{}");
 8     }
 9     static {
10         System.out.println("ClassA:static");
11     }
12 
13 }

 1 public class ClassB extends ClassA {
 2 
 3     public ClassB(){
 4         System.out.println("Class-B");
 5     }
 6     {
 7         System.out.println("Class-B:{}");
 8     }
 9     static {
10         System.out.println("ClassB:static");
11     }
12 
13 }

执行：new ClassB();

执行结果：

ClassA:static
ClassB:static
Class-A:{}
Class-A
Class-B:{}
Class-B