For example, some Collection implementations like List allow duplicate elements whereas other implementations like Set don't. A lot of the Collection implementations have a public clone method. However, it doesn't make sense to include it in all implementations of Collection. This is because Collect...
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...
This question is themost importantand is most likely to be asked at every job interview level. You must be very clear on this topic., not only because it is the most asked question but also it will open up your mind to further questions related to Collection APIs. The answer to this q...
If you are working on Enterprise applications, I am sure that JDBC API is a part of it. JDBC API provides database connectivity for relational databases, such as MySQL and Oracle. This article has a collection of 40+ interview questions related to the JDBC API. They cover areas from basic...
Difference between Vector and Arraylist is the most common Core Java Interview question you will come across in Collection . This question is mostly used as a start up question by the Interviewers before testing deep roots of the Collection . ...
An interface as it relates to Java is a blueprint of a class or a collection of abstract methods and static constants. Each method is public and abstract, but it does not contain any constructor. What are constructors in Java? In Java, a constructor refers to a block of code used to ...
// Appropriate method-related code. } E.g. Synchronizing a block of code inside a function: public myFunction (){ synchronized (this) { // Synchronized code here. } } 4What is Collection API? The Collection API is a set of classes and interfaces that support operation on collections of...
1.6.Java Collections Interview Questions Should I recommend you to prepare theCollection frameworkand all of its main classes? I guess you are already intelligent enough. Any interview (junior and mid-level) will be incomplete if there are no questions related to the Collections framework. It trul...
All the Objects, their related instance variables, and arrays are stored in the heap. This memory is common and shared across multiple threads. 4) JVM language Stacks Java language Stacks store local variables, and it’s partial results. Each thread has its own JVM stack, created simultaneously...
You don't need instance of class to call that method or field,the static modifier means something is directly related to a classBack to Top29. How would you put comments in your java Code?// -- single line, /* */ -- multiline...