Java/J2EE Interview Questions

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Java/J2EE Interview Questions
United States	2007-07-30 06:46:29

Interview Questions Home \| Ask Questions \| Interview Success Kit Java/J2EE Interview Questions Welcome to the exciting world of New Interview Questions. Here, you can read the existing answers, provide your own answers, ask new questions, save your favorite questions and do much more! How do I instantiate a bean whose constructor accepts parameters using the useBean tag? http://www.newinterviewquestions.com/interview/340 Replacing Characters in a String? http://www.newinterviewquestions.com/interview/341 Searching a String? http://www.newinterviewquestions.com/interview/342 Connecting to a Database and Strings Handling? http://www.newinterviewquestions.com/interview/343 What is a transient variable? http://www.newinterviewquestions.com/interview/344 What is the difference between Serializalble and Externalizable interface? http://www.newint erviewquestions.com/interview/345 How many methods in the Externalizable interface? http://www.newinterviewquestions.com/interview/346 How many methods in the Serializable interface? http://www.newinterviewquestions.com/interview/347 How to make a class or a bean serializable? http://www.newinterviewquestions.com/interview/348 What is the serialization? http://www.newinterviewquestions.com/interview/349 What are synchronized methods and synchronized statements? http://www.newinterviewquestions.com/interview/350 What is synchroni zation and why is it important? http://www.newinterviewquestions.com/interview/351 What is the purpose of finalization? http://www.newinterviewquestions.com/interview/352 What classes of exceptions may be caught by a catch clause? http://www.newinterviewquestions.com/interview/353 What is the difference between the Reader/Writer class hierarchy and the InputStream/OutputStream class hierarchy? http://www.newinterviewquestions.com/interview/354 What happens when a thread cannot acquire a lock on an object? http://www.newinterviewquestions.com/interview/355 What restrictions are placed on method overriding? http://www.newinterviewquestions.com/interview/356 What restrictions are placed on method overloading? http://www.newinterviewquestions.com/interview/357 How does multithreading take place on a computer with a single CPU? http://www.newinterviewquestions.com/interview/358 How is it possible for two String objects with identical values not to be equal under the == operator? http://www.newinterviewquestions.com/interview/359 How are this() and super() used with constructors? http://www.newinterviewquestions.com/interview/360 What class allows you to read objects directly from a stream? http://www.newinterviewquestions.com/interview/361 What is the ResourceBundle class? http://www.newinterviewquestions.com/interview/362 What interface must an object implement before it can be written to a stream as an object? http://www.newinterviewquestions.com/interview/363 What is Serialization and deserialization? http://www.newinterviewquestions.com/interview/364 What are the Object and Class classes used for? http://www.newinterviewquestions.com/interview/365 Can you write Java code for declaration of multiple inheritance in Java ? http://www.newinterviewquestions.com/interview/366 What do you mean by multiple inheritance in C++ ? http://www.newinterviewquestions.com/interview/367 Write the Java code to declare any constant (say gravitational constant) and to get its value. http://www.newinterviewquestions.com/interview/368 What are the disadvantages of using threads? http://www.newinterviewquestions.com/interview/369 Given two tables Student(SID, Name, Course) and Level(SID, level) write the SQL statement to get the name and SID of the student who are taking course = 3 and at freshman level. http://www.newinterviewquestions.com/interview/370 What do you mean by virtual methods? http://www.newinterviewquestions.com/interview/371 What do you mean by static methods? http://www.newinterviewquestions.com/interview/372 What do mean by polymorphism, inheritance, encapsulation? http://www.newinterviewquestions.com/interview/373 What are the advantages of OOPL? http://www.newinterviewquestions.com/interview/374 How many methods do u implement if implement the Serializable Interface? http://www.newinterviewquestions.com/interview/375 Are there any other 'marker' interfaces? http://www.newinterviewquestions.com/interview/376 What is the difference between instanceof and isInstance? http://www.newinterviewquestions.com/interview/377 Why do you create interfaces, and when MUST you use one? http://www.newinterviewquestions.com/interview/378 What's the difference between the == operator and the equals() method? What test does Object.equals() use, and why? http://www.newinterviewquestions.com/interview/379 Discuss the differences between creating a new class, extending a class and implementing an interface; and when each would be appropria te. http://www.newinterviewquestions.com/interview/380 Given a text file, input.txt, provide the statement required http://www.newinterviewquestions.com/interview/381 Name four methods every Java class will have. http://www.newinterviewquestions.com/interview/382 What does the "abstract" keyword mean in front of a method? A class? http://www.newinterviewquestions.com/interview/383 Does Java have destructors? http://www.newinterviewquestions.com/interview/384 Are constructors inherited? Can a subclass call the parent's class constructor? When? http://www.newinterviewquestions.com/interview/385 Does Java have "goto"? http://www.newinterviewquestions.com/interview/388 What does the "final" keyword mean in front of a variable? A method? A class? http://www.newinterviewquestions.com/interview/389 Access specifiers: "public", "protected", "private", nothing? http://www.newinterviewquestions.com/interview/442 What is JDBC? Describe the steps needed to execute a SQL query using JDBC. http://www.newinterviewquestions.com/interview/443 What is RMI? http://www.newinterviewquestions.com/interview/444 What are native methods? How do you use them?< /A> http://www.newinterviewquestions.com/interview/445 What does the keyword "synchronize" mean in java. When do you use it? What are the disadvantages of synchronization? http://www.newinterviewquestions.com/interview/446 How many different types of JDBC drivers are present? Discuss them. http://www.newinterviewquestions.com/interview/447< BR> What is the difference between a Vector and an Array. Discuss the advantages and disadvantages of both? http://www.newinterviewquestions.com/interview/448 Describe java's security model. http://www.newinterviewquestions.com/interview/449 Java says "write once, run anywhere". What are some ways this isn't quite true? http://www.newinterviewquestions.com/interview/450 What is the difference between an Applet and an Application? http://www.newinterviewquestions.com/interview/451 How can you force all derived classes to implement a method present in the base class? http://www.newinterviewquestions.com/interview/452 What are abstract classes, abstract methods? http://www.newinterviewquestions.com/interview/453 What's the difference between == and equals method? http://www.newinterviewquestions.com/interview/454 Describe, in general, how java's garbage collector works? http://www.newinterviewquestions.com/interview/455 What is the difference between StringBuffer and String class? http://www.newinterviewquestions.com/interview/456 How can you achieve Multiple Inheritance in Java? http://www.newinterviewquestions.com/interview/457 What are interfaces? http://www.newinterview questions.com/interview/458 What are the main differences between Java and C++? http://www.newinterviewquestions.com/interview/459 In Java, You can create a String object as: String str = "abc"; & String str = new String("abc"); Why cant a button object be created as : Button bt = "abc" Why is it compulsory to create a button object as: Button bt = new Button("abc"); Why is this not compulsory in String's case? http://www.newinterviewquestions.com/interview/460 Why are Java ARchive (JAR) files important? http://www.newinterviewquestions.com/interview/461 What is it reflection (introspection) ? Why is reflection possible in the Java language? http://www.newinterviewquestions.com/interview/462 How to make application thread-safe ? http://www.newinterviewquestions.com/interview/463 What is it object serialization? http://www.newinterviewquestions.com/interview/464 What do you know about networking support in Java? http://www.newinterviewquestions.com/interview/465 What you know about Corba implementation in Java? http://www.newinterviewquestions.com/interview/466 What is Java Beans? http://www.newinterviewquestions.com/interview/467 Compare SWING components to standard AWT. http://www.newinterviewquestions.com/interview/468 What is layout manager ? How does it work? http://www.newinterviewquestions.com/interview/469 What is the purpose of the toolkit in the Abstract Window Toolkit (AWT)? How does AWT work? http://www.newinterviewquestions.com/interview/470 What are the differences between Java & C++ in terms of its features? http://www.newinterviewquestions.com/interview/471 Is the ternary operator written x : y ? z or x ? y : z ? http://www.newinterviewquestions.com/interview/472 What is the List interface? http://www.newinterviewquestions.com/interview/473 What is the difference between an if statement and a switch statement? http://www.newinterviewquestions.com/interview/474 What are the problems faced by Java programmers who don't use layoutmanagers? http://www.newinterviewquestions.com/interview/475 What are the two basic ways in which classes that can be run as threads may be defined? http://www.newinterviewquestions.com/interview/476 What are synchronized methods and synchronized statements? http://www.newinterviewquestions.com/interview/477 Which Component subclass is used for drawing and painting? http://www.newinterviewquestions.com/interview/478 What methods are used to get and set the text label displayed by a Buttonobject? http://www.newinterviewquest ions.com/interview/479 What method must be implemented by all threads? http://www.newinterviewquestions.com/interview/480 When is an object subject to garbage collection? http://www.newinterviewquestions.com/interview/481 Can an unreachable object become reachable again? http://www.newinterviewquestions.com/interview/482 How does a try statement determine which catch clause should be used tohandle an exception? http://www.newinterviewquestions.com/interview/483 What are the Object and Class classes used for? http://www.newinterviewquestions.com/interview/484 What modifiers may be used with a top-level class? http://www.newinterviewquestions.com/interview/485 What is a Java package and how is it used? http://www.newinterviewquestions.com/interview/486 What is the purpose of a statement block? http://www.newinter viewquestions.com/interview/487 What is the difference between the prefix and postfix forms of the ++ operator? http://www.newinterviewquestions.com/interview/488 Can try statements be nested? http://www.newinterviewquestions.com/interview/489 To what value is a variable of the boolean type automatically initialized? http://www.newinterviewquestions.com/interview/490 What is the difference between a public and a non-public class? http://www.newinterviewquestions.com/interview/491 What is the difference between a Scrollbar and a ScrollPane? http://www.newinterviewquestions.com/interview/492 What is numeric promotion? http://www.newinterviewquestions.com/interview/493 Cheers, Team, New Interview Questions.com http://www.newinterviewquestions.com Send instant messages to your online friends http://uk.messenger.yahoo.com __._,_.___ Messages in this topic (0) Reply (via web post) \| Start a new topic Recent Activity 7 New Members Visit Your Group SPONSORED LINKS Network security certification Communication and networking Network certification Network certification training Comptia network certification Yahoo! 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