源代码:
[java] view plain copy
- public class SuperAndSub {
- public static void main(String[] args) {
- // Super s1 = new Sub();
- // Super s2 = new Super();
- Sub s3 = new Sub();
- }
- }
- class Super {
- static int a = getA();
- static {
- System.out.println("加载Super的静态块");
- }
- int b = getB();
- {
- System.out.println("加载Super的普通块");
- }
- Super() {
- System.out.println("加载Super的构造器");
- }
- static int getA() {
- System.out.println("加载Super的静态变量");
- return 1;
- }
- static int getB() {
- System.out.println("加载Super的实例变量");
- return 2;
- }
- }
- class Sub extends Super {
- static int c = getC();
- static {
- System.out.println("加载Sub的静态块");
- }
- int d = getD();
- {
- System.out.println("加载Sub的普通块");
- }
- Sub() {
- System.out.println("加载Sub的构造器");
- }
- static int getC() {
- System.out.println("加载Sub的静态变量");
- return 1;
- }
- static int getD() {
- System.out.println("加载Sub的实例变量");
- return 2;
- }
- }
输出:
[html] view plain copy
- 加载Super的静态变量
- 加载Super的静态块
- 加载Sub的静态变量
- 加载Sub的静态块
- 加载Super的实例变量
- 加载Super的普通块
- 加载Super的构造器
- 加载Sub的实例变量
- 加载Sub的普通块
- 加载Sub的构造器
时间: 2024-08-08 09:41:57