Java Quiz 1. Java keywords are written in lowercase as well as upper case True False None 2. Can we have any number of classes in a Java source file Yes No None 3. Static methods cannot be accessed directly from the class level Yes No None 4. 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 5. 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 6. An object which has no referrence is known as annonymous object True False None 7. Which of the following is not a part of OOPs Type checking Polymorphism Multitasking Information hiding All of the above None 8. An object could be an algorithm a data container a program anything None 9. 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 10. 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 11. What is the default value of the local variables? 0 null no default value depends on the data type None 12. 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 13. Data hiding is also known as Encapsulation Inheritance Data binding None 14. Which of the following is not a Java keyword try static new integer None 15. Who is known as the founder of Java James Gosling Guido Van Rossum Doug Cutting None 16. An object that has more than one form is referred to as Abstract class Inheritance Interface Polymorphism None 17. Annonymous object can be used at the time of object creation only True False None 18. Can you save the java source file without any name (say ".java")? Yes No None 19. Choose the appropriate data type for this value 9.9 String int double boolean None 20. The class which inherits the properties of other is known asi. Super classii. Sub classiii. Derived class ii & iii i & ii i & iii None 21. Can you compare between the boolean and int primitive data types? Yes No None 22. When a class is based on another class, it inherits Data Methods Data and methods None of the above None 23. Java runs on which platform Windows Unix/Linux Mac All of the above None 24. What is the size of a char in Java 4 bits 6 bits 8 bits 16 bits None 25. Runtime polymorphism can be achieved by data members Yes No None Time's up
