The String is the most used Java class. Java interview usually starts with tricky questions related to String. This post contains 21 questions with detailed answers for String in Java. 5.Java Multi-Threading and Concurrency Interview Questions Multithreading and Concurrency is a hot topic in Java ...
Java Collections Framework is one of the core APIs of java programming language. It’s one of the important topics for java interview questions. Here I am listing some important java collections interview questions and answers to help you in the interview. This is directly coming from my 14+ ...
Garbage collection is one of the most important feature of Java. Garbage collection is also called automatic memory management as JVM automatically removes the unused variables/objects (value is null) from the memory. User program cann't directly free the object from memory, instead it is the jo...
That’s why this question is one of the java interview questions for experienced professionals.Java offers many primitives to help with this, but it takes experience to select the right one in each particular situation. Often, a tradeoff needs to be made between efficiency on the one hand, ...
This instance of inner class has nothing to do with original parameter HashMap instance and is completely independent. 4. Difference between ConcurrentHashMap and Collections.synchronizedMap()? This one is a slightly complex question. Both are synchronized version ofHashMap, with difference in their ...
8. What is Java-based Configuration in Spring? The central artifacts in Spring’s java-configuration support are@Configurationannotated classes and@Beanannotated methods. The@Beanannotation is used to indicate that a method instantiates, configures and initializes a new object to be managed by the ...
Another useful interview strategy is to review potential Java interview questions in advance. Let’s check out examples of some of the top Java interview questions. Also, each question includes some information that can help refresh your memory. ...
Another Java collection question which appear as part ofJava Coding interview questionand appeared in many interviews. As you know there are multiple ways to traverse or iterate Map in Java e.g. for loop, while loop using Iterator etc.4 ways to iterator Map in Javahas detailed explanation and...
[Interview Question ][Data Structure] Two Sum Problem -Array Two sum problem is one of the most asked data structure questions for a java developer interview. There could be one or more ways to solve the problem but i am trying to give the optimized solution to this problem. Lets first...
Java:https://docs.oracle.com/en/java/index.html Spring:https://spring.io/guides Redis :https://redis.io/documentation Dubbo:http://dubbo.apache.org/zh-cn/docs/user/quick-start.html ShardingJDBC:https://shardingsphere.apache.org/document/current/cn/features/ ...