- How does the string output in reverse?
- Stringbuffer,string,stringbulider difference?
- What is the relationship between map and HashMap?
- The relationship between HashSet and Hashtable?
- How to put list in map, how to get the value in list?
- . Understanding of the IOC
- Application of AOP
- 8 Characteristics of ArrayList and LinkedList
- Bubble sort.
- Understand the design patterns, for example
- Static code blocks, instance code blocks, and no parameter construction methods have subclass inheritance when the order is executed.
- Hibernate's first-level cache and level two cache
- MySQL primary key auto-grow how to set
- Common commands for Linix, with environment variables
- How many configurations does spring have?
- The difference between ApplicationContext and beanfactory
- C3p0 How to configure?
- How log4j logs are configured
- The role of sessionfactory?
- Ajax synchronous vs. asynchronous? What is async?
- How to check the data in the background, such as: mailbox, mobile phone number, ID number, etc.?
- What is the difference between MyBatis ${} and #{}? MyBatis How to BULK INSERT?
- What data formats are used for both front and back interaction? How does the JSON data format verify the format correctly?
- Try ... catch ... With return, finally executed before return or after?
- How garbage processor GC works, when the GC executes
- Order of execution of SQL keywords
- Springmvc How to build the environment? Spring Hibernate?
- What are the notes for spring? SPRINGMVC's annotations,hibernate annotations?
- Several states of a thread? What is the difference between start () and run (), wart () and sleep ()? How to wake the Sleep method
- How is JVM memory divided? Store that data separately?
- String s= "abc" with string s= new string ("abc"); The difference between the two?
- Use of subString and substr ()
- What are the common methods of string?
- How do you define an array? int or string of type
Summary of questions in Java written test surface
