OnJava8-Examples/innerclasses/AnonymousConstructor.java
2015-12-15 11:47:04 -08:00

34 lines
856 B
Java

// innerclasses/AnonymousConstructor.java
// (c)2016 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
// Creating a constructor for an anonymous inner class.
abstract class Base {
public Base(int i) {
System.out.println("Base constructor, i = " + i);
}
public abstract void f();
}
public class AnonymousConstructor {
public static Base getBase(int i) {
return new Base(i) {
{ System.out.println("Inside instance initializer"); }
@Override
public void f() {
System.out.println("In anonymous f()");
}
};
}
public static void main(String[] args) {
Base base = getBase(47);
base.f();
}
}
/* Output:
Base constructor, i = 47
Inside instance initializer
In anonymous f()
*/