Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
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
You can’t perform that action at this time.
You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session.