Java Quiz 1. What is the default value of the local variables? 0 null no default value depends on the data type None 2. Java runs on which platform Windows Unix/Linux Mac All of the above None 3. When a class is based on another class, it inherits Data Methods Data and methods None of the above None 4. Can you compare between the boolean and int primitive data types? Yes No None 5. Choose the appropriate data type for this value 9.9 String int double boolean None 6. Data hiding is also known as Encapsulation Inheritance Data binding None 7. What is the size of a char in Java 4 bits 6 bits 8 bits 16 bits None 8. Can you save the java source file without any name (say ".java")? Yes No None 9. Java keywords are written in lowercase as well as upper case True False None 10. Which of the following is not a part of OOPs Type checking Polymorphism Multitasking Information hiding All of the above None 11. An object that has more than one form is referred to as Abstract class Inheritance Interface Polymorphism None 12. An object which has no referrence is known as annonymous object True False None 13. Which of the following is not a Java keyword try static new integer None 14. The class whose properties are inherited are is known as i. Sub classii. Super classiii. Base class ii & iii i & iii i & ii None of the above None 15. If you want your condition to depend upon 2 conditions both being true, what is the proper notation to put between the two Boolean statements | || & && None 16. The class which inherits the properties of other is known asi. Super classii. Sub classiii. Derived class ii & iii i & ii i & iii None 17. An object could be an algorithm a data container a program anything None 18. What are the two common characteristics shared by all objects in Java? State and behavior Methods and interfaces Class and Methods Methods and messages None 19. Which statement is correct The JRE is smaller than the JDK so it needs less Disk space. The JRE is smaller than the JDK so it needs more Disk space. The JDK needs less Disk space as it doesn't contains the JRE. None of the above None 20. What is the correct syntax for java main method? public static Void main (string [] args) public static void main (string [] args) public static void main (String [] args) public static void main (String [] Args) None 21. Can we have any number of classes in a Java source file Yes No None 22. Runtime polymorphism can be achieved by data members Yes No None 23. Static methods cannot be accessed directly from the class level Yes No None 24. Who is known as the founder of Java James Gosling Guido Van Rossum Doug Cutting None 25. Annonymous object can be used at the time of object creation only True False None Time's up
