Java多態內存分析
阿新 • • 發佈:2018-04-30
inf java servle 指向 phi println dog xtend public
HttpServlet.java
package cn.bjsxt.oop.polymorphism.myServlet;
public class HttpServlet {
public void service(){
System.out.println("HttpServlet.service()");
this.doGet();
}
public void doGet(){
System.out.println("HttpServlet.doGet()");
}
}
MyServlet.java
package cn.bjsxt.oop.polymorphism.myServlet;
public class MyServlet extends HttpServlet {
public void doGet(){
System.out.println("MyServlet.doGet()");
}
}
Test.java
package cn.bjsxt.oop.polymorphism.myServlet; public class Test { public static void main(String[] args) { HttpServlet s = new MyServlet(); s.service(); } }
輸出結果:
HttpServlet.service()
MyServlet.doGet()
內存分析如下:
其中this指向最外面的對象
Java多態內存分析