Created
February 25, 2013 05:03
-
-
Save phyous/5027857 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
public class Main { | |
static class A { | |
public void foo() { | |
System.out.println("foo - A"); | |
} | |
public void bar() { | |
System.out.println("bar - A"); | |
} | |
} | |
static class B extends A { | |
public void foo() { | |
System.out.println("foo - B"); | |
} | |
public void baz() { | |
System.out.println("baz - B"); | |
} | |
} | |
public static void main(String[] args) { | |
A a = new A(); | |
B b = new B(); | |
a = b; | |
// Calling foo on class A defers to B subclass implementation since we assigned b to a | |
// prints: foo - B | |
a.foo(); | |
// a.baz() -- error! baz is only a method on class B | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment