我正在努力理解Java的Consumer接口.我已经复制了它.但当我将andThen()方法的返回语句中的lambda表达式替换为匿名类定义时,它会引发StackOverflow Error:
interface Interface<T> {
void accept(T t);
default Interface<T> andThen(Interface<T> after) {
//return (T t)->{accept(t); after.accept(t);};//this runs correctly
//below is the anonymous class definition of above lambda expression
return new Interface<T>(){
@Override
public void accept(T t)
{
accept(t); //stackoverflow error thrown
after.accept(t);
}
};
}
}
//Main class:
public class Lambda2 {
public static void main(String args[]) {
Interface<String> e1=str -> System.out.println("in e1 - "+str);
Interface<String> e2=str -> System.out.println("in e2 - "+str);
Interface<String> e3 = e1.andThen(e2);
e3.accept("Sample Output");
}
}
您能告诉我为什么匿名类定义的lambda表达式不会导致StackOverflow Error吗?