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Which of the following classes are available in the java.lang package?

A. Random

B. Stack

C. String Buffer

D. Vector

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  1. In RMI before running the client program we must start RMI Registry.
  2. For all insert, update, delete, query operations on a database, ResultSet object creation is mandatory.
  3. The use of protected keyword to a member in a class will restrict its visibility as follows:
  4. Java always provides a default constructor to a class.
  5. The expression (x == y && a<b) is true If either x == y is true or a<b is true.
  6. Servlet has ___________
  7. Any method in a supper class can be over ridden in its subclass.
  8. A class may be both abstract and final.
  9. To delete a file, we can use an instance of class file.
  10. It is perfectly legal to refer to any instance variable inside of a static method.
  11. Which of the following statements are valid array declarations?
  12. The import statement is always the first no comment statement in a Java program files.
  13. A package is a collection of
  14. Which of the following represent legal flow control statements?
  15. Which of the following are not keywords?
  16. Which of the following control expressions are valid for an if statement?
  17. Which of the following methods can be used to remove a component from the display?
  18. One the features of is that an array can store many different types of values.
  19. It is perfectly legal to assign a subclass object to a supper class reference.
  20. DataInput is
  21. putValue(...) method takes _____________________-
  22. forName() is a static factory method
  23. Which are the valid ways to create DataInputStream streams?
  24. A final class may not have any abstract method.
  25. The programmer must explicitly create the system .in and system .out objects.
  26. It is an error to catch the same type of exception in two different catch blocks associated with a particular…
  27. In a single Servlet class we can use____________
  28. Which key word can protect a class in package from accessibility by the classes outside the package?
  29. Every call to wait has a corresponding call to notify that will eventually end the wafting.
  30. When present, package must be the first no comment statement in the file.