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Digest #2004

Top Java Interview Questions & Answers by "Sruti" a.maheshi

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1 Top Java Interview Questions & Answers

Wed Jan 14, 2015 11:42 pm (PST) . Posted by:

"Sruti" a.maheshi

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| JAVA INTERVIEW QUESTIONS |
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| Java Interview Questions |
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- What is internationalisation? How can you achieve in java?
http://www.coolinterview.com/interview/5380/

- Why we can not override static method?
http://www.coolinterview.com/interview/10778/

- What is the difference between instanceof and isInstance?
http://www.coolinterview.com/interview/377/

- What is package? Define with example?
http://www.coolinterview.com/interview/15284/

- What is the difference between an if statement and a switch statement?
http://www.coolinterview.com/interview/474/

- What does the "abstract" keyword mean in front of a method? A class?
http://www.coolinterview.com/interview/383/

- How will you pass values from HTML page to the Servlet?
http://www.coolinterview.com/interview/770/

- Which Java operator is right associative?
http://www.coolinterview.com/interview/1164/

- Explain working of Java Virtual Machine(JVM).
http://www.coolinterview.com/interview/5652/

- How can we write our own arraylist without using collections?
http://www.coolinterview.com/interview/5553/

- What is the difference between length and length() ?
http://www.coolinterview.com/interview/15169/

- Is java a fully object oriented programming or not? if not why?
http://www.coolinterview.com/interview/5666/

- Addition of two numbers using Bitwise operators. Reading An 2D array using single for loop
http://www.coolinterview.com/interview/12560/

- Which class is extended by all other classes?
http://www.coolinterview.com/interview/1107/

- What is the difference between List, Set and Map
http://www.coolinterview.com/interview/5362/

- What is cohesion and coupling in java?
http://www.coolinterview.com/interview/16138/

- Why java is not pure object oriented language?
http://www.coolinterview.com/interview/12727/

- What is difference between & and && in java
http://www.coolinterview.com/interview/10787/

- Can we serialize the static variable?
http://www.coolinterview.com/interview/5527/

- How will you perform transaction using JDBC
http://www.coolinterview.com/interview/5281/

- Meaning - Abstract classes, abstract methods
http://www.coolinterview.com/interview/5655/

- Explain Garbage collection mechanism in Java
http://www.coolinterview.com/interview/5644/

- What is Singleton class?
http://www.coolinterview.com/interview/841/

- Given A = 1, B = 2, C = 3, D = 4 …… Z = 26, write a java standalone program to encode the word "TELEPHONE" into numbers.
http://www.coolinterview.com/interview/13436/

- What is the default size of vector and StringBuffer?
http://www.coolinterview.com/interview/5153/

- What is the difference between Java and J2EE? Is J2EE advanced version of Java?
http://www.coolinterview.com/interview/15081/

- Access specifiers: "public", "protected", "private", nothing?
http://www.coolinterview.com/interview/442/

- Explain RMI Architecture?
http://www.coolinterview.com/interview/781/

- What is the difference between interface and abstract class ?
http://www.coolinterview.com/interview/28279/

- What is Weak reference and Soft reference in java?
http://www.coolinterview.com/interview/5483/

- can we declare multiple main() methods in multiple classes.ie can we have each main method in its class in our program?
http://www.coolinterview.com/interview/5714/

- what is skeleton in java or J2EE??????
http://www.coolinterview.com/interview/11042/

- What are the disadvantages of using threads?
http://www.coolinterview.com/interview/369/

- What are the main differences between jdk1.4 , jdk1.5 & jdk1.6?
http://www.coolinterview.com/interview/15721/

- Have you ever used HashTable and Dictionary?
http://www.coolinterview.com/interview/769/

- Can I execute or call one applet from another applet? If so then how??? Please Reply me... Thanks
http://www.coolinterview.com/interview/12448/

- can the main() method be overloaded? or overrided? and what happens when we do so?
http://www.coolinterview.com/interview/10781/

- Can we override Thread's run() method?
http://www.coolinterview.com/interview/15851/

- What are the main differences between Java and C++?
http://www.coolinterview.com/interview/459/

- What is the difference between the Font and FontMetrics classes?
http://www.coolinterview.com/interview/579/

- Explain Java security model
http://www.coolinterview.com/interview/5653/

- What is the difference between InputStream/Outputstream classes?
http://www.coolinterview.com/interview/808/

- What is the difference between concat and append?
http://www.coolinterview.com/interview/15168/

- What is the disadvantage of threads?
http://www.coolinterview.com/interview/10792/

- What is the difference between exception and error?
http://www.coolinterview.com/interview/819/

- How System.out.println() works?
http://www.coolinterview.com/interview/10782/

- What is JDBC? Describe the steps needed to execute a SQL query using JDBC.
http://www.coolinterview.com/interview/443/

- Explain Servlet and JSP life cycle
http://www.coolinterview.com/interview/5700/

- How many different types of JDBC drivers are present? Discuss them.
http://www.coolinterview.com/interview/447/

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