How to find the maximum profit per index of stock price?
Question: There is a given array of the stock price, each index denotes the price of the stock on that day. You need to find the max profit you will earn if you buy and sell the stock. Example - Given an array - [10,5,6,8,9,3] where index 0 shows the prices of the stock on day 1 respectively. Now while(i <prices.length-1 && prices[i]>= prices[i+1])
What are the most common interview questions in Java?
One of the most common Interview Questions Java, which an interviewer can ask you. Q2: What is JVM? Ans: JVM stands for Java Virtual Machine. It is a Virtual Machine that provides a runtime environment to execute the Java Code. Q3: What is JRE?
What to look for in a Java developer interview?
Core Java interview questions You need Java programmers with the experience of developing general-purpose Java applications. This requires core Java skills. Look for Java developers that have a robust knowledge of the following: Java programmers need to have in-depth knowledge of core Java before they can develop advanced Java applications. 4.
What are the key Java knowledge areas to prioritize in interview?
The above-mentioned interview questions will help, however, you also need to prioritize the key Java knowledge areas. These are as follows: 1. Encapsulation in Java You need Java programmers with good knowledge of object-oriented programming (OOP). OOP has a few fundamental concepts, and encapsulation is one of them.
Why is the address of the value passed in Java?
However, when the object is passed in any method, the address of the value is passed due to the nature of object handling in Java. When an object is passed, a copy of the reference is created by Java and that is passed to the method. The objects point to the same memory location. 2 cases might happen inside the method:
What is the final keyword in Java?
In Java, the final keyword is used as defining something as constant /final and represents the non-access modifier. final variable: When a variable is declared as final in Java, the value can’t be modified once it has been assigned.
What is JVM in Java?
JVM is a platform-dependent, abstract machine comprising of 3 specifications - document describing the JVM implementation requirements, computer program meeting the JVM requirements and instance object for executing the Java byte code and provide the runtime environment for execution . Main Purpose.
What is a JDK?
JDK is a complete software development kit for developing Java applications. It comprises JRE, JavaDoc, compiler, debuggers, etc. JRE is a software package providing Java class libraries, JVM and all the required components to run the Java applications.
Why is pointer usage important in Java?
Moreover, security is also compromised if pointers are used because the users can directly access memory with the help of pointers.
How does an exception work in Java?
When an exception occurs, first it searches to locate the matching catch block. In case, the matching catch block is located, then that block would be executed. Else, the exception propagates through the method call stack and goes into the caller method where the process of matching the catch block is performed. This propagation happens until the matching catch block is found. If the match is not found, then the program gets terminated in the main method.
How does method overloading work in Java?
In Java, method overloading is made possible by introducing different methods in the same class consisting of the same name. Still, all the functions differ in the number or type of parameters. It takes place inside a class and enhances program readability.
Java and its continued relevance
Let me start with a hypothetical question: why would you look for Java developers? After all, aren’t there highly modern programming languages around? The answer lies in the continued relevance of Java even after decades.
The popularity of Java
Even after decades of its advent, Java continues to enjoy a lot of popularity. The Stack Overflow developer survey 2019 report states that 41.1% of surveyed developers use it. Java remains one of the 5 most popular languages, according to this report. Let me start with a hypothetical question: why would you look for Java developers?
First Things First: Select Your Job Requirements
Ultimately, an interview is about finding someone capable of producing the Java code you need while working effectively with your team. To do that, you need to figure out your unique job requirements.
Junior Developer Interview Questions
A Junior developer is someone that‘s just starting their career with less than 2 years of experience. Junior developers demand the lowest salary, but they are limited in the tasks they can take on, make more frequent mistakes and take more time to solve problems.
Mid-Level Developer Interview Questions
Skip to the Senior developer section for the Java advanced interview questions.
Senior Java Developer Interview Questions
Senior developers are the most experienced and skilled and they are experts in the Java programming language. But with the highest salary range, you’re looking for much more than that.
Hiring Java developers: A challenging task
You can certainly make good use of the above-mentioned interview questions, however, is that enough? Well, depending on the local labor market in your geography, hiring competent Java developers can be hard!
