If you are learning java or if you are preparing for a job then first of all you should test yourself by giving online assessment tests. In this article we are going to tell you about things you should do so let’s get started.
- Watch the videos for Introduction to Java Basics.
- Watch the videos for any of these courses on YouTube: Intro to Java Programming, Introduction to Object-Oriented Programming, or Intro to Data Structures with Java.
- Take practice exams online before tackling a real test in order to gauge your progress and check your pace.
- Practice using a real IDE to make sure you are comfortable with it before tackling the real test online.
- Study the Java Language Specification (Java SE 8 Edition).
- To prepare yourself mentally, find out how many multiple choice questions you’ll need to answer and how much time you’ll need to spend in practice exams before taking the java test.
- Reach out to friends or colleagues who have taken the tests and ask them for tips or studying strategies that they used.
- Keep in mind that you will only need a passing score of 71% to pass the exam.
- See how much time is spent on each topic in each level of question.
- Practice taking mock tests before taking the official exam.
What are the different types of questions asked in the Java test?
Java is a high-level object oriented programming language for developing computer programs. It allows programmers to write less code and get more work done faster, which means fewer mistakes and better productivity. Though Java has many features that make it a desirable programming language, it can be difficult to learn at first. One of the best ways to learn Java is through practice and building on what you have already learned, so here we will show you different types of questions asked in online data structure test with Java.
- Questions related to arrays:
Array is a collection of similar types of data. It can store only one element per index. In other words, it’s by nature one-dimensional and takes up as much memory as the number of elements. An array is created using square brackets (“[” and “]”) that contain a list of the elements enclosed within them. The sizes are determined statically at compile time, not run time. Array type can be created from any data type like characters or integers etc by appending “[]” after them for instance String[] means String array and Character[] means Character array etc.
- Questions related to strings:
A string is a permanent, immutable sequence of characters. In Java, it’s a sequence of UTF-16 code units. To create an array of strings, you must use the buffer data type since strings cannot be treated as uninitialized variables. For instance, you can suppose that you are asked to declare an array of Strings and the question could be “How will you store it?” The answer should be “In a Buffer.” It’s because Strings cannot be initialised at run time when creating an array initially.
- Questions related to linked lists:
Linked list is a collection of nodes with each node containing data and a link to the next node in sequence. Each node contains two special fields: next (which links this node to the following node) and data (which holds the actual data). Java LinkedList is a doubly-linked list, which means that each node has two pointers, one for keeping track of its successor (the Next field) and one for keeping track of its predecessor (the Previous field).
- Questions related to stacks and queues:
In computer science, a stack is an abstract data type (ADT), implemented using a Last In, First Out (LIFO) stack. It is used to implement last-in, first-out (LIFO) data structures. A stack data structure can be allotted with the capacity of its Last field, the available space it takes up. The stack stores a limited number of elements in memory at any point in time.
- Questions related to trees:
A tree (or tree data structure) is a mathematical object representing a hierarchical or multitree system. Every node in a tree has some value. Every leaf node also has zero or more children (children are also referred to as descendants or successors) with each child having at least one value. Every non-leaf node that is not a root has exactly two children – the left subtree and the right subtree.
- Questions related to hash tables:
A HashMap is an object used for storing objects of key – value pairs. In Java, it is a data structure which manages a collection of key – value pairs. HashMap stores the values in a hash table, which are sorted by comparing their keys with the hash code of their associated value object. It allows us to quickly find out if an element exists or not in that HashMap by using the method hasNext() on the Map interface. We can access elements in the HashMap by its key and get its corresponding value with the get(key) method defined on the Map interface.
- Questions related to binary trees:
A binary tree is a tree in which the nodes have two children, one for each child of the node. The diagram below illustrates the concept, where red nodes represent leaves and blue ones represent internal nodes. The black circles represent the root of a binary tree.
These are some types of questions generally asked in java tests. These types of questions are asked to check your problem solving ability in programming. If you are willing to improve your java programming skills then you should check out Mercer Mettl. They provide you a platform where you can brush up your skill or if you are a beginner then you can also practise mock tests available there. They provide mock tests in almost every programming language like C , C++ , Python and many more.
If you are concerned about your placement then don’t worry because many companies use their platform to take assessment for their hiring process. Still if you have any query feel free to ask in the comment section.
