What are the trickiest Java questions?

Asked by Last Modified  

3 Answers

Learn Java

Follow 1
Answer

Please enter your answer

Sana

I am online Quran teacher 7 years

Tricky Java questions often involve nuances of the language, especially in areas like inheritance, polymorphism, threading, and exception handling. Here are a few examples: 1. Explain the difference between `==` and `equals()` in Java. 2. What is the difference between `HashMap` and `HashTable`? 3....
read more
Tricky Java questions often involve nuances of the language, especially in areas like inheritance, polymorphism, threading, and exception handling. Here are a few examples: 1. Explain the difference between `==` and `equals()` in Java. 2. What is the difference between `HashMap` and `HashTable`? 3. How does Java handle multiple inheritance? 4. Explain the concept of method overloading and method overriding in Java. 5. Discuss the differences between `ArrayList` and `LinkedList`. 6. Explain the purpose of the `volatile` keyword in Java. 7. Describe the Java memory model and how it relates to multi-threading. 8. Discuss the difference between checked and unchecked exceptions in Java. 9. What is the use of the `transient` keyword in Java? 10. Explain the significance of the `finalize()` method in Java. These questions often require a deep understanding of Java concepts and practical experience in programming with the language. read less
Comments
Dislike Bookmark

C language Faculty (online Classes )

Explain the difference between deep copy and shallow copy in Java, and provide examples of scenarios where each would be appropriate. Describe the principles of multithreading in Java and discuss how you would implement thread safety in a concurrent application.
Comments
Dislike Bookmark

Software Engineer & Programmer, Educator

The trickest question i have came though is, Is java really is platform independent, as they claim. if yes, why they need JVM support to run java program. is it the true platform indepency? :-)
Comments
Dislike Bookmark

View 1 more Answers

Related Questions

public void foo( boolean a, boolean b) { if( a ) { System.out.println("A"); /* Line 5 */ } else if(a && b) /* Line 7 */ { System.out.println( "A && B"); } else /* Line 11 */ { if ( !b ) { System.out.println( "notB") ; } else { System.out.println( "ELSE" ) ; } } } A. If a is true and b is true then the output is "A && B" B. If a is true and b is false then the output is "notB" C. If a is false and b is true then the output is "ELSE" D. If a is false and b is false then the output is "ELSE"
C
Srikanth
why string class is override in euals()/ hashCode Hethods?
• In the above program we compared two string using equals() method and it returns true.and comparing using == operator returns false. • Basically equal() will also return false on comparing those two...
Rami Reddy
Why Operator Overloading in not allowed in JAVA?
Java does not support operator overloading by programmers. This is not the same as stating that Java does not need operator overloading. Operator overloading is syntactic sugar to express an operation...
Ashish
Is it really needed to do Java training before graduation, to get a job?
Yes, It's must to get better opportunities and to standard alone in IT field. Not only core Java but also learn Spring,Hinernat ,Struts. ANGULARJS add an advantage to get job easily.
Udaybhan
Java was developed in which year?
1995 By Sir James Gosling
Mohit
0 1
8

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Inheritance In Java
Inheritance: The process of getting properties and behaviors from one class to another class is called inheritance. Properties: Variables Behaviors: Methods The main purpose of the inheritance...
D

Deleted U.

1 0
0
Advance Java
1) Servlet • Basics of Servlet • Servlet Request • Servlet Collaboration • Servlet Config • Servlet Context • Attribute • Session Tracking • Event and Listener •...
A

Ashok Kumar K

0 0
0
How To Setup development Environment Of Java?
After installation of JAVA, we need to setup 2 environment variables. First one is JAVA_HOME and second is Path. Below steps to set up Java environment to compile & execute Java programs from command...

Amit K.

0 0
0
Java 8 Predicates
In the previous lession, we have learnt how to use filters and collectors. In filter we have passed the condition to evaluate whether the object is eligible to be filtered or not. Code given below for...

Shiva Kumar

0 0
0
Java
Java is a high level language which is far better than procedural languages like C, Fortran and Pascal. Java completely stands with the principles of OOPS (Object Oriented Programming Structure). The...
A

Abhisheak Saxena

0 0
0

Recommended Articles

Why Java is the Most Popular Programming Language

Designed in a flexible and user-friendly demeanor, Java is the most commonly used programming language for the creation of web applications and platform. It allows developers to “write once, run anywhere” (WORA). It is general-purpose, a high-level programming language developed by Sun Microsystem. Initially known as an...

Read full article >

Some Popular IT Courses in Current Market

In the domain of Information Technology, there is always a lot to learn and implement. However, some technologies have a relatively higher demand than the rest of the others. So here are some popular IT courses for the present and upcoming future: Cloud Computing Cloud Computing is a computing technique which is used...

Read full article >

Why Should You Learn Java !

Java is the most famous programming language till date. 20 years is a big time for any programming language to survive and gain strength. Java has been proved to be one of the most reliable programming languages for networked computers. source:techcentral.com Java was developed to pertain over the Internet. Over...

Read full article >

Top 5 Reasons to Learn JavaScript

Before we start on the importance of learning JavaScript, let’s start with a short introduction on the topic. JavaScript is the most popular programming language in the world, precisely it is the language - for Computers, the Web, Servers, Smart Phone, Laptops, Mobiles, Tablets and more. And if you are a beginner or planning...

Read full article >

Find Oracle Java Certification near you
Oracle Java Certification in Bangalore
Oracle Java Certification in Hyderabad
Oracle Java Certification in Pune
Oracle Java Certification in Chennai
Oracle Java Certification in Delhi
Oracle Java Certification in Mumbai
Oracle Java Certification in Kolkata
Oracle Java Certification in Noida
Oracle Java Certification in Gurgaon
Oracle Java Certification in Ghaziabad
Online Java Training

Looking for Java Training Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you