Which functional interface is used for operations that take two arguments and return a single value?
What is a method reference (::) in Java?
Consider: Stream.of(1, 2, 3, 4, 5).filter(x -> x > 2).map(x -> x * 2).forEach(System.out::println); What will be the output?
What is the difference between peek() and forEach() in streams?
What issue can arise when using lambda expressions with checked exceptions?
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What will be the output of: IntStream.range(1, 4).map(x -> x * x).forEach(System.out::print);
In the lambda expression (a, b) -> a.compareTo(b), what can we infer about the parameters?
What is the time complexity of reducing a stream with a stateful lambda operation?
Consider: Function<Integer, Function<Integer, Integer>> curried = a -> b -> a + b; What is this pattern called?
Which of the following correctly uses method reference with constructor?
What happens when a lambda expression references a local variable from its enclosing scope?
Consider: Stream.of(1, 2, 3).map(x -> { System.out.println(x); return x * 2; }).collect(Collectors.toList()); What will print?
What is the purpose of the @FunctionalInterface annotation in Java?
Which stream operation would you use to transform elements from one type to another?
What will be the output of: List<Integer> list = Arrays.asList(1, 2, 3); list.replaceAll(x -> x * 2); System.out.println(list);
Which of the following is a valid lambda expression in Java?
A lambda expression can only be used with which type of interface?
What is the return type of the lambda expression: (a, b) -> a > b?
Which of the following lambda expressions has incorrect syntax?
What will be the type of the lambda expression (x) -> x.toString()?
