Answer1215

摘要： If you need to convert a deep nested object struture, you cannot just use @InitBinder, you need to build a custom convertor: Exp: conver city prop in 阅读全文

摘要： For example, from the client, it send date as string to BE. But BE requires date to be a Date instead of String. Controller: .. @Autowired private Use 阅读全文

摘要： User entity: import javax.validation.constraints.*; @Entity public class User { @Id private int id; @Size(min = 6, message = "Username cannot be less 阅读全文

摘要： @Repository public interface ProductRepository extends CrudRepository<Product, Integer> { @Query("select p from Product p where p.name like %:name%") 阅读全文

摘要： Set<Book> lib = ... lib.stream() .flatMap(book -> book.getWords().stream()) .distinct() .forEach(System.out::println); 阅读全文

摘要： Entity: package com.frankmoley.security.app.auth; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Generated 阅读全文

摘要： Code to improve: final Collection<DiscussionTopics> topics = s.getTopics(); final boolean anyTopics = topics != null && !topics.isEmpty(); Change to: 阅读全文

摘要： Module defined what can be used inside the module package and what outside world can use inside our module. module-info.java /* * To change this licen 阅读全文

摘要： Highlights: Solve the complexities of write Redux (actions, reducers, selector...middleware...) Solve the immutable pattern with nested spread operato 阅读全文

摘要： public class Code { public static void main(String[] args) { IntStreams.range(1,4) .forEach(System.out::println); // 1 2 3 Arrays.stream(new int[] {1, 阅读全文