Lombok

日志组件

@Slf4j
//@XSlf4j
//@Log
//@Log4j
//@Log4j2
//@CommonsLog
//@JBossLog
public class LombokDemo {
}

基础生成

  @Getter
  @Setter
  @EqualsAndHashCode(of = {"name","sex","age"})  
  @ToString(of = {"name","sex","age"})
  private static class Student01{
        private String name;
        private int age;
        private Byte sex;

 }

构造函数

   @NoArgsConstructor(access = AccessLevel.PRIVATE)       //无参构造函数 access设置权限
   @AllArgsConstructor                //全参构造函数
   private static class Student02{
        private String name;
        private int age;
   }

建造者

    @Data //@Getter @Setter @RequiredArgsConstructor @ToString @EqualsAndHashCode
    @Value
    @Accessors(chain = true, fluent = true)
    @Builder
    private static class Student03{

        private String name;
        private int age;

        @Singular("addHobby")
        private List<String> hobby;

        public static void main(String[] args) {
           Student03 student03=Student03.builder()
                   .name("hello").age(10)
                    .addHobby("hobby1")
                    .addHobby("hobby2")
                    .build();
            System.out.println(student03);
        }
    }

     @SneakyThrows    //异常处理
     @Synchronized    //加锁处理  
    public void shitHappens(){
        
         //   自动关闭资源
        @Cleanup FileOutputStream instream=new FileOutputStream(in);
        //   instream.close();

        Thread.sleep(1000);
    }