Explain the new Features of JDBC 2.0 Core API?

Java Interview Questions and Answers (part 3)

(Continued from previous question...)

390. Explain the new Features of JDBC 2.0 Core API?

The JDBC 2.0 API includes the complete JDBC API, which includes both core and Optional Package API, and provides inductrial-strength database computing capabilities.
New Features in JDBC 2.0 Core API:

Scrollable result sets- using new methods in the ResultSet interface allows programmatically move the to particular row or to a position relative to its current position
JDBC 2.0 Core API provides the Batch Updates functionality to the java applications.
Java applications can now use the ResultSet.updateXXX methods.
New data types - interfaces mapping the SQL3 data types
Custom mapping of user-defined types (UTDs)
Miscellaneous features, including performance hints, the use of character streams, full precision for java.math.BigDecimal values, additional security, and support for time zones in date, time, and timestamp values.

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Other Interview Questions

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• What does it mean that a class or member is final?
• What does it mean that a method or class is abstract?
• What is the main difference between Java platform and other platforms?
• What is the Java Virtual Machine?
• What is the Java API?
• What is the package?
• What is native code?
• Explain the user defined Exceptions?
• Is Java code slower than native code?
• Can main() method be overloaded?
• What is the serialization?
• Explain the new Features of JDBC 2.0 Core API?
• Explain garbage collection?
• How you can force the garbage collection?
• What is OOPS?
• Describe the principles of OOPS.
• Explain the Encapsulation principle.
• Explain the Inheritance principle.
• Explain the Polymorphism principle.
• Explain the different forms of Polymorphism.
• What are Access Specifiers available in Java?
• Describe the wrapper classes in Java.
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• What is Service Locator pattern?
• What is Session Facade pattern?
• What is Data Access Object pattern?
• How can we make a class Singleton
• Can we make an EJB singleton?
• How is static Synchronization different form non-static synchronization?
• What are class members and Instance members?
• Name few Garbage collection algorithms?
• Does Java pass by Value or reference?
• Why Thread is faster compare to process?
• When and How is an object considered as Garbage by a GC?
• Can we force Garbage collection?
• What are generations in Garbage Collection terminolgy? What is its relevance?
• What is a Throughput Collector?
• When to Use the Throughput Collector?
• What is AggressiveHeap?
• What is a Concurrent Low Pause Collector?
• When to Use the Concurrent Low Pause Collector?
• What is Incremental Low Pause Collector?
• When to Use the Incremental Low Pause Collector?
• How do you enable the concurrent garbage collector on Sun's JVM?
• What is a platform?
• What is transient variable?
• How to make a class or a bean serializable?
• What restrictions are placed on method overloading?
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• What is the List interface?
• What is the difference between a Scrollbar and a ScrollPane?
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• What is meant by "Abstract Interface"?
• Can Java code be compiled to machine dependent executable file?
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• Which containers use a FlowLayout as their default layout?
• What state does a thread enter when it terminates its processing?
• What is the Collections API?
• What is the List interface?
• Is sizeof a keyword?
• Which class is the superclass for every class.
• Which Container method is used to cause a container to be laid out and redisplayed?
• What's the difference between a queue and a stack?
• You can create an abstract class that contains only abstract methods. On the other hand, you can create an interface that declares the same methods. So can you use abstract classes instead of interfaces?
• What comes to mind when you hear about a young generation in Java?
• What comes to mind when someone mentions a shallow copy in Java?
• If you're overriding the method equals() of an object, which other method you might also consider?
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• How can you minimize the need of garbage collection and make the memory use more effective?
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• What access level do you need to specify in the class declaration to ensure that only classes from the same directory can access it?
• What is the difference between an Interface and an Abstract class?
• What is the purpose of garbage collection in Java, and when is it used?
• Describe synchronization in respect to multithreading.
• Explain different way of using thread?
• What are pass by reference and passby value?
• What is HashMap and Map?
• Difference between HashMap and HashTable?
• Difference between Vector and ArrayList?
• Difference between Swing and Awt?
• 470. What is the difference between a constructor and a method?
• What is an Iterator?
• 472. State the significance of public, private, protected, default modifiers both singly and in combination and state the effect of package relationships on declared items qualified by these modifiers.
• What is an abstract class?
• What is static in java?
• What is final?
• What if the main method is declared as private?
• What if the static modifier is removed from the signature of the main method?
• What if I write static public void instead of public static void?
• What if I do not provide the String array as the argument to the method?
• What is the first argument of the String array in main method?
• If I do not provide any arguments on the command line, then the String array of Main method will be empty or null?
• How can one prove that the array is not null but empty using one line of code?
• What environment variables do I need to set on my machine in order to be able to run Java programs?
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• 485. Can I have multiple main methods in the same class?
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• What is Overriding?
• What are different types of inner classes?
• Are the imports checked for validity at compile time? e.g. will the code containing an import such as java.lang.ABCD compile?
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• What is the default value of an object reference declared as an instance variable?
• Can a top level class be private or protected?
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