logical programming questions in java

Frontier Dream Workshop 2017-04-18 18:14 Most of the Java interview is divided into written and interview, the following issues are cutting-edge education small series according to the major IT enterprises interview asked the questions sorted out, such as the need for relevant learning materials can leave a mailbox, I hope to help you. Example 1: What are the aspects of object-or

transactions (a transaction is a logical set of operations that make up each unit of this set of operations, either fully successful or fail completely)2). Row-level locking (usually locks the current line when updating)3). It has very efficient caching features, can cache indexes, and can cache data.Talk about the pessimistic and optimistic lock on MySQLPessimistic lock and optimistic lock are two common methods of resource concurrent lock design,Pe

in spring? What is di?For:IOC is control reversal, so-called inversion refers to the application itself is not responsible for the creation and maintenance of dependent objects, and this task to the third party is the spring to deal with, this is the right to create objects to the third party, control reversal is the transfer of control rightsdi is a dependency injection. Dependency injection, the spring dynamically injects dependent objects into the component during the run.When the IOC contai

IOC in spring?What is di?For:IOC is control reversal, so-called inversion refers to the application itself is not responsible for the creation and maintenance of dependent objects, and this task to the third party is the spring to deal with, this is the right to create objects to the third party, control reversal is the transfer of control rightsdi is a dependency injection. Dependency injection, the spring dynamically injects dependent objects into the component during execution.When the IOC c