The check box group class is a subclass of the component class.

A. True

B. False

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  1. All methods in an abstract class must be declared abstract.
  2. When we invoke repaint () for a Component, the AWT invokes the method:
  3. An individual array element that is passed to a method and modified in that method will contain the…
  4. Given the codeString s = new String("abc");Which of the following calls are valid?
  5. Which of the following are keywords?
  6. To delete a file, we can use an instance of class file.
  7. Every call to wait has a corresponding call to notify that will eventually end the wafting.
  8. We can add more than one class(es) at the time of compilation Java Beans.
  9. The name of a Java program file must match the name of the class with the extension Java.
  10. It is perfectly legal to assign a subclass object to a supper class reference.
  11. Which of the following methods can be used to remove a component from the display?
  12. Which of the following statements are valid array declarations?
  13. The import statement is always the first no comment statement in a Java program files.
  14. What is error in the following class definitions? abstract class xy { abstract sum(int x, int y)…
  15. The length of a string object 's1' can be obtained using the expression s1.length.
  16. The expression (x == y && a<b) is true If either x == y is true or a<b is true.
  17. Submit button always fires doPost(...)
  18. executeUpdate(------------) returns ___________
  19. The keywords reserved but not used in the initial version of Java re:
  20. A package is a collection of
  21. Java is fully object oriented programme.
  22. JSP files creates ________________
  23. class.forName(...) creates an instance of java ODBC driver
  24. When present, package must be the first no comment statement in the file.
  25. The default case is always required in the switch selection structure.
  26. We would like to make a member of a class visible in all subclasses regardless of what package they…
  27. Which of the following will produce a value of 22 if x=22.9:
  28. Which of the following control expressions are valid for an if statement?
  29. We can over load methods with differences only in their return type.
  30. Which javadoc tag is used to denote a comment for methods parameters?