
Quiz on Lambda Expressions and Functional Interfaces
Authored by Hoang Khoa
Information Technology (IT)
Professional Development
Used 2+ times

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19 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Các biểu thức lambda là gì?
Một loại biến
Một khối mã ngắn không có tên
Một phương thức có tên trong Java
Một lớp trong Java
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Phần nào sau đây là một phần bắt buộc của biểu thức lambda?
Tên phương thức
Tên lớp
Danh sách tham số
Kiểu trả về
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Các toán tử mũi tên '->' trong biểu thức lambda có ý nghĩa gì?
Bắt đầu một phương thức
Phân tách tham số và thân
Kết thúc một câu lệnh
Khai báo một biến
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Phiên bản Java nào đã giới thiệu biểu thức lambda?
Java 8
Java 7
Java 9
Java 6
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is a functional interface?
An interface with exactly one abstract method
An interface with multiple abstract methods
An interface with no methods
An interface that cannot be implemented
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is an example of a built-in functional interface?
Runnable
Supplier
Serializable
Cloneable
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the purpose of the @FunctionalInterface annotation?
To indicate a class is abstract
To enforce a single abstract method in an interface
To create a new class
To define a method
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