Java Packages Quiz

Question 1

Which of the following is/are true about packages in Java?

1) Every class is part of some package. 
2) All classes in a file are part of the same package. 
3) If no package is specified, the classes in the file 
   go into a special unnamed package 
4) If no package is specified, a new package is created with 
   folder name of class and the class is put in this package. 

• Only 1, 2 and 3
• Only 1, 2 and 4
• Only 4
• Only 1 and 3

Question 2

Which of the following is/are advantages of packages?

• Packages avoid name clashes
• Classes, even though they are visible outside their package, can have fields visible to packages only
• We can have hidden classes that are used by the packages, but not visible outside.
• All of the above

Question 3

Predict the output of following Java program

Java

// Note static keyword after import.
import static java.lang.System.*;
  
class StaticImportDemo
{
   public static void main(String args[])
   {      
        out.println(\"GeeksforGeeks\");
   }
}

• Compiler Error
• Runtime Error
• GeeksforGeeks
• None of the above

Question 4

Which of the following statement(s) is/are TRUE regarding Java Servlets? (a) A Java Servlet is a server-side component that runs on the web server and extends the capabilities of a server. (b) A Servlet can use the user interface classes like AWT or Swing.

• Only (a) is TRUE.

• Only (b) is TRUE.

• Both (a) and (b) are TRUE.

• Neither (a) nor (b) is TRUE.

Question 5

Which one of the following is correct?

• Java applets can not be written in any programming language
• An applet is not a small program
• An applet can be run on its own
• Applets are embedded in another applications