Java study

Necessary for back-end programmers ： Conquer order by

Preface in daily development , We often use order by, Dear little friend , Do you know order by How does it work ?order by What is the optimizati...
2021-06-15 15:59 views 18

study java My first class

study java The first lesson of learning java Before, first Meet us java Grandmaster —> James · Mr. Gosling's introduction – Here is just an i...
2021-03-29 16:38 views 16

Stop learning java It's over , People are saying you're a fool

Even if it's academic Java All of us are fools , That's also a high salary , Arrogantly despise those who do not learn or do not have in-depth und...
2021-03-28 14:13 views 32

Transaction message source code learning

Transaction message source code learning TransactionMQProducer Send transaction message when transaction message is sent , It needs to be marked a...
2020-07-26 03:04 views 38

Thread safety and synchronous thread

Thread unsafe ： The data is negative , The same situation, for example, in the fight for tickets . The data may be inaccurate in the second stage ...
2020-02-20 18:46 views 20

Daemons and lambda The derivation of

lambda The derivation of ： This is to avoid too many anonymous inner class definitions .public class lambdaTest { public static void main(String[] ...
2020-02-20 18:46 views 20

@ControllerAdvice Intercept abnormal return data

/** * <> * < Error interception return json To the caller > * * @Author jason_w * @Date 2019/1/9 0009 21:27 * @see */...
2019-01-09 22:55 views 17
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