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2020 New Java Interview Questions - Containers (2)

Common Java interview questions: 1. Tell me about the implementation principle of HashMap; 2. Tell me about the implementation principle of HashSet; 3. What is the difference between ArrayList and LinkedList; 4. How to realize the conversion between array and List; 5. ArrayList and Vector What is the difference.

Apr 11, 2020 pm 03:42 PM

java 容器

2020 New Java Interview Questions - Containers (1)

Common Java interview questions: 1. What are the Java containers? 2. What is the difference between Collection and Collections? 3. What is the difference between List, Set and Map? 4. What is the difference between HashMap and Hashtable.

Apr 07, 2020 pm 03:41 PM

java 容器

2020 New Java Interview Questions - Basic Part (2)

Common Java interview questions: 1. Do abstract classes have to have abstract methods? 2. What are the differences between ordinary classes and abstract classes? 3. Can abstract classes be modified with final? 4. What are the differences between interfaces and abstract classes.

Apr 04, 2020 pm 03:37 PM

java

2020 New Java Interview Questions - Basic Part (1)

Common Java interview questions include: 1. What is the difference between JDK and JRE? 2. What is the difference between == and equals? 3. What is the role of final in java? 4. Is String a basic data type? 5. How to reverse a string?

Mar 31, 2020 pm 04:03 PM

java 面试

Java persistence layer interview questions (1)

Java interview questions include: What is ORM? Is SessionFactory in Hibernate thread-safe? Explain the process of loading entity objects in Session; what is the difference between using # and $ to write placeholders in MyBatis? .

Mar 14, 2020 pm 05:45 PM

java 持久层面试

Java Web common interview questions

Common Java Web interview questions: What is the difference between jsp and servlet? What are the built-in objects of jsp? What are the functions? Talk about the four scopes of jsp? What is the difference between session and cookie? Think about how the server identifies a specific customer?

Jan 08, 2020 pm 03:39 PM

Java

Common interview questions about java object copying

Common interview questions about Java object copying include: Why use cloning? How to implement object cloning? What is the difference between deep copy and shallow copy? If you want to process an object and retain the original data for subsequent operations, you need to clone it. Cloning in the Java language targets instances of classes.

Jan 03, 2020 pm 01:39 PM

java

Java reflection common interview questions

Common Java interview questions: What is reflection? What is java serialization? When is serialization required? What is a dynamic proxy? What are the applications? How to implement dynamic proxy?

Dec 28, 2019 pm 02:56 PM

java

Java multi-threading common interview questions

Common Java multi-threading interview questions include: What is the difference between parallelism and concurrency? What is the difference between thread and process? What is a daemon thread? What are the ways to create a thread? Tell me what is the difference between runnable and callable? What are the statuses of threads?

Dec 24, 2019 pm 03:02 PM

java

Common interview questions about java containers

What are the java containers? What is the difference between Collection and Collections? What is the difference between List, Set, and Map? Tell me about the implementation principle of HashMap? How to decide between HashMap or TreeMap?

Dec 18, 2019 pm 03:17 PM

java

Common basic Java interview questions

The most common basic Java interview question: What is the difference between JDK and JRE? What is the difference between == and equals? If the hashCode() of the two objects is the same, equals() must also be true, right? What is the role of final in java?

Dec 14, 2019 pm 03:06 PM

Java

javaweb interview questions (3)

What are the advantages and disadvantages of AJAX? What is the difference between AJAX applications and traditional Web applications? What is the implementation process of Ajax? What is Java Collections Framework? Name some advantages of collection framework? What are the basic interfaces of the Java collection framework?

Dec 13, 2019 pm 03:31 PM

java

Java generics interview questions

What are generics in Java? What are the benefits of using generics? How do generics work in Java? What is type erasure? How does it work? Can you pass a List<String> to a method that accepts a List<Object> parameter?

Dec 12, 2019 pm 03:21 PM

Java

Java multi-threading interview questions

What is a thread? What is the difference between thread and process? How to implement threads in Java? What are the functions and differences between the Java keywords volatile and synchronized? What are the different thread life cycles? What do you understand by thread priority? How to analyze and avoid deadlocks?

Dec 11, 2019 pm 03:05 PM

java