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What is difference between ArrayList and LinkedList ?

What is the difference between an Applet and a Servlet?

What is a Server Side Include (SSI)?

What is a JavaBean exactly?

Can an enum be extended?

What is the difference between HashMap , LinkedHashMap and TreeMap in Java?

What is the relationship between an event-listener interface and an event-adapter class?

What is the role of stub in RMI?

What are the advantages of JSP?

What is the difference between throw and throws ?

What is meant by JSP implicit objects and what are they?

How threadsafe is enum in Java?

Which Swing methods are thread-safe?

What is structure of Java Heap ?

What is the importance of hashCode() and equals() methods?

What is a Constructor, Constructor Overloading and Copy-Constructor in Java ?

When is the finalize() called? What is the purpose of finalization?

What is difference between Array and ArrayList ? When will you use Array over ArrayList ?

What is the advantage of PreparedStatement over Statement ?

Can an enum be extended?

What is the difference between final , finalize and finally in java?

What is the difference between GenericServlet and HttpServlet ?

Explain different ways of creating a thread. Which one would you prefer and why?

Does Java support multiple inheritance?

Explain the role of Driver in JDBC.

What are Scriptlets in Java?

What is difference between fail-fast and fail-safe?

What’s the difference between Enumeration and Iterator interfaces?

What differences exist between Iterator and ListIterator ?

What is the difference between public , protected , package-private and private in Java?

Can == be used on enum in Java ?

How and where are Annotations used in Java?

Explain the life cycle of a Servlet

What is the JIT in Java?

What do the ... dots in the method parameters mean in java?

What’s a deadlock?

What is the main difference between StringBuffer and StringBuilder ?

How does finally block differ from finalize() method?

Explain the life cycle of an Applet.

What is Comparable and Comparator interface? List their differences.

What is the Java Classloader?

What happens when an Applet is loaded?

Can you access non static variable in static context?

What is static initializer in java?

What are the restrictions imposed on Java applets?

What are the differences between '==' and equals in java?

How do I break out of nested loops in Java?

Why does Java have transient fields?

What is the tradeoff between using an unordered array versus an ordered array?

What is the applet security manager, and what does it provide?

What is the difference between doGet() and doPost() ?

Is there anything like static class in Java?

If an object reference is set to null , will the Garbage Collector immediately free the memory held by that object?

Why Collection doesn’t extend Cloneable and Serializable interfaces?

Is Java pass-by-reference or pass-by-value?

Compare the sleep() and wait() methods in Java

What are the steps involved to make work a RMI program?

What is the volatile keyword useful for?

What's the advantage of using getters and setters?

What are untrusted applets?

What is Java Priority Queue?

What’s the difference between a ClassNotFoundException and NoClassDefFoundError ?