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Digest #1984

Top 100 Java Interview Questions With Answers by "Megha" a.maheshi

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1 Top 100 Java Interview Questions With Answers

Wed Nov 19, 2014 7:55 pm (PST) . Posted by:

"Megha" a.maheshi

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

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

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

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

- 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/

- Does java support Line by Line execution?
http://www.coolinterview.com/interview/28835/

- Give example of : High severity & Low priority
http://www.coolinterview.com/interview/5668/

- Why pointers are not used in java?
http://www.coolinterview.com/interview/12857/

- Why ArrayList is faster than Vector?
http://www.coolinterview.com/interview/5656/

- Why we use OOPS concepts, What is its advantage?
http://www.coolinterview.com/interview/708/

- Why Java is case sensitive?
http://www.coolinterview.com/interview/11126/

- What are the differences between JIT and HotSpot
http://www.coolinterview.com/interview/5722/

- Difference: Java Beans, Servlets
http://www.coolinterview.com/interview/5651/

- What is the difference between Comparable and Comparator
http://www.coolinterview.com/interview/5360/

- can we write return statement in try catch or finally block. suposse we write return 0 in try catch or finally. can we do.
http://www.coolinterview.com/interview/5499/

- Does Java have destructors?
http://www.coolinterview.com/interview/384/

- How to create own Marker Interface with example
http://www.coolinterview.com/interview/5560/

- Why do we call java until.* package as a framework.
http://www.coolinterview.com/interview/10797/

- How Linkedlist can be implemeented in java with out using collection framework?
http://www.coolinterview.com/interview/5208/

- Can a double value be cast to a byte?
http://www.coolinterview.com/interview/605/

- What restrictions are placed on method overloading?
http://www.coolinterview.com/interview/538/

- String class can be extendable? and why?
http://www.coolinterview.com/interview/15171/

- Difference between Applet and JApplet
http://www.coolinterview.com/interview/5241/

- What is the difference between Iterator and Enumeration?
http://www.coolinterview.com/interview/814/

- What it the root class for all Java classes?
http://www.coolinterview.com/interview/719/

- What is the differences between script language and programming language?
http://www.coolinterview.com/interview/10798/

- What is the functionality stubs and skeletons?
http://www.coolinterview.com/interview/727/

- How to make application thread-safe ?
http://www.coolinterview.com/interview/463/

- What is the purpose of the Runtime class?
http://www.coolinterview.com/interview/1168/

- What are the main differences between jdk1.4 n jdk1.5?
http://www.coolinterview.com/interview/13852/

- Why JAVA not support multiple inheritance? How can we pass address of an object?
http://www.coolinterview.com/interview/12824/

- Why there are some null interface in java. What does it mean. Give me some null interfaces in JAVA?
http://www.coolinterview.com/interview/686/

- What is meant by cookies? Explain.
http://www.coolinterview.com/interview/673/

- What is the difference between attribute and parameter ?
http://www.coolinterview.com/interview/15170/

- Java says "write once, run anywhere". What are some ways this isn't quite true?
http://www.coolinterview.com/interview/450/

- Advantages of Implementing Runnable over extending Thread
http://www.coolinterview.com/interview/5517/

- If interface has got four methods,and I like to implement only two methods, how this could be achieved?
http://www.coolinterview.com/interview/10773/

- What do mean by polymorphism, inheritance, encapsulation?
http://www.coolinterview.com/interview/373/

- IBM Interview Questions in Bangalore
http://www.coolinterview.com/interview/5660/

- Solve it... public class test { public static void main(String[] args) { int i=5; i=i++; System.out.println("result::"+i); } }
http://www.coolinterview.com/interview/10789/

- How will you call an Applet using a Java Script function?
http://www.coolinterview.com/interview/760/

- How to make a class or a bean serializable?
http://www.coolinterview.com/interview/348/

- How many methods do u implement if implement the Serializable Interface?
http://www.coolinterview.com/interview/375/

- What is the mapping mechanism used by Java to identify IDL language?
http://www.coolinterview.com/interview/726/

- What is meant by distributed Application. Why we are using that in our applications?
http://www.coolinterview.com/interview/681/

- what is the definition of arraylist? plz write in brief.
http://www.coolinterview.com/interview/12622/

- How can you achieve Multiple Inheritance in Java?
http://www.coolinterview.com/interview/457/

- In a large-scale multi-threaded environment, how might you organise access to a shared resource (such as a database connection)?
http://www.coolinterview.com/interview/15738/

- Why Java is not fully object oriented?
http://www.coolinterview.com/interview/721/

- What is the meaning of "final" keyword?
http://www.coolinterview.com/interview/5646/

- What is the abstraction? Give example?
http://www.coolinterview.com/interview/11678/

- What is meant by static query and dynamic query?
http://www.coolinterview.com/interview/696/

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