In the HelloWorldAnonymousClasses example program (from here):
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public class HelloWorldAnonymousClasses {
interface HelloWorld {
public void greet();
public void greetSomeone(String someone);
}
public void sayHello() {
class EnglishGreeting implements HelloWorld {
String name = "world";
public void greet() {
greetSomeone("world");
}
public void greetSomeone(String someone) {
name = someone;
System.out.println("Hello " + name);
}
}
HelloWorld englishGreeting = new EnglishGreeting();
HelloWorld frenchGreeting = new HelloWorld() {
String name = "tout le monde";
public void greet() {
greetSomeone("tout le monde");
}
public void greetSomeone(String someone) {
name = someone;
System.out.println("Salut " + name);
}
};
HelloWorld spanishGreeting = new HelloWorld() {
String name = "mundo";
public void greet() {
greetSomeone("mundo");
}
public void greetSomeone(String someone) {
name = someone;
System.out.println("Hola, " + name);
}
};
englishGreeting.greet();
frenchGreeting.greetSomeone("Fred");
spanishGreeting.greet();
}
public static void main(String... args) {
HelloWorldAnonymousClasses myApp =
new HelloWorldAnonymousClasses();
myApp.sayHello();
}
}
What calls the greet()
method of the englishGreeting
object? I'm confused..
EDIT
Thanks for your replies. I should have spotted that! I was trying to solve another query, which is:
In the example program on https://gist.github.com/bernii/5697073
In the code
this.wait.until(new ExpectedCondition<Boolean>() {
public Boolean apply(WebDriver webDriver) {
System.out.println("Searching ...");
return webDriver.findElement(By.id("resultStats")) != null;
}
});
what calls the apply() method in the anonymous inner class?
EDIT
I have now asked my second query in a new Question.
In the part of the code shown below three instances of the HelloWorld interface are created:
HelloWorld englishGreeting = new EnglishGreeting();
HelloWorld frenchGreeting = new HelloWorld() {
//...
};
HelloWorld spanishGreeting = new HelloWorld() {
// ...
};
And here some methods are called on those instances:
englishGreeting.greet();
frenchGreeting.greetSomeone("Fred");
spanishGreeting.greet();
The french and spanish versions are created using an anonymous inner class. The english version is created from a local class declaration (EnglishGreeting). Note: you don't see local class declarations very often, it's a bit of a construed example.