JAVA MULTIPLE CHOICE QUESTION.

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Presentation transcript:

JAVA MULTIPLE CHOICE QUESTION

Check your Knowledge Press to Start www.prolearninghub.com

1. Java was first developed in? 1990 1991 1993 1996 www.prolearninghub.com

2. Java is object oriented language? Yes No www.prolearninghub.com

3. The old name of java is? Oct Oak J language None of above www.prolearninghub.com

4. Java does not support: Multithreading Reflection Operator Overloading Garbage Collection www.prolearninghub.com

private synchronized int e 5. Which of the following class level (nonlocal) variable declarations will not compile? protected int a transient int b = 3 private synchronized int e volatile int d www.prolearninghub.com

6. Static functions can be accessed using null reference. True False www.prolearninghub.com

7. Java does not support Multiprogramming Operator overloading Inheritance Garbage collection www.prolearninghub.com

8. Abbreviation of JDK is: Java Data Kit Java Definition Kit Java Development Kit Java Design Kit www.prolearninghub.com

9. We can invoke any number of methods by one instance only True False www.prolearninghub.com

10. Abbreviation of AWT is Abstract Window Toolkit A Web Toolkit Application with types Absolutely Wonderful Kit www.prolearninghub.com

11. Which of the following is generated when the source code is successfully compiled? Output Byte code Error None of above www.prolearninghub.com

12. Process of converting typed code to machine code? Compilation Inheritance Polymorphism None www.prolearninghub.com

13. In java, if you do not give a value to a variable before using it, ______ It will contain a garbage value It will initialized with zero Compiler will give an error None of above www.prolearninghub.com

14. Which among the following is the compulsory section of java program? Package Statement Import Statement Documentation section Class declaration section www.prolearninghub.com

15. Sharing of common information is achieved by the concept of? polymorphism encapsulation inheritance none of above www.prolearninghub.com

16. ______ consist a data and methods? Variable Class Vectors None of these www.prolearninghub.com

17. Which JDK command is correct to run a Java application in ByteCode 17. Which JDK command is correct to run a Java application in ByteCode.class? java ByteCode java ByteCode.class javac ByteCode.java javac ByteCode www.prolearninghub.com

18. Java Virtual Machine is software that interprets Java byte code. Yes No www.prolearninghub.com

19. Java is also known as ____ stage language One Two Three Four www.prolearninghub.com

20. In java, if you do not give a value to a variable before using it, ______ It will contain a garbage value It will initialized with zero Compiler will give an error None of above www.prolearninghub.com

21. To interprets java code we use: Javap None of the above www.prolearninghub.com

22. Which one of these lists contains only Java programming language keywords? class, if, void, long, Int, continue goto, instanceof, native, finally, default, throws try, virtual, throw, final, volatile, transient strictfp, constant, super, implements, do www.prolearninghub.com

23. Javap mean: java compiler java interpreter java disassemble java debugger www.prolearninghub.com

24. Hot java is a: web browser system software IDE None of above www.prolearninghub.com

25. How many types of variables exist in java? 3 4 5 www.prolearninghub.com

26. Local variable declare: Inside the method Outside the method Both side None of above www.prolearninghub.com

27. Instance variable declare: Inside the method Inside the class but outside the method Outside the method Outside the class www.prolearninghub.com

28. Static variable is: Local Global Both None www.prolearninghub.com

29. How many bytes a Boolean has? 1 2 3 4 www.prolearninghub.com

30. Long has 8 bytes. True False www.prolearninghub.com

31. Float data-type deals with: Integer Fraction Decimal point None of above www.prolearninghub.com

32. Int data type has: 2 bytes 3 bytes 4 bytes 5 bytes www.prolearninghub.com

33. Default value for char data type is: ‘\0000’ www.prolearninghub.com

34. Which package contains String? Java.util Java.lang Java.rmi None www.prolearninghub.com

35. Which of the following is true about String? String is mutable. String is immutable. String is a data type. None of the above. www.prolearninghub.com

36. What is the default value of byte variable? 0.0 null Not defined www.prolearninghub.com

37. What is instance variable? Instance variables are static variables within a class but outside any method. Instance variables are variables defined inside methods, constructors or blocks. Instance variables are variables within a class but outside any method. None of the above www.prolearninghub.com

38. What kind of variables a class can consist of? class variables, instance variables class variables, local variables, instance variables class variables class variables, local variables www.prolearninghub.com

39. If result= 2+3*5, what is the value and type of ‘result’ variable? 17, bytes 25, bytes 17,int 25, int www.prolearninghub.com

40. Which of the following is the smallest integer data type ? Into long byte short www.prolearninghub.com

41. Which of the following is not a primitive data type? byte short enum Int www.prolearninghub.com

42. Which value cannot store character data type. Digit Special character String Letter www.prolearninghub.com

43. Range of byte data type is? -128 to 255 -128 to 256 -128 to 127 -127 to 128 www.prolearninghub.com

44. In order to fetch stream of data from network or file, following data type used? double char Into byte www.prolearninghub.com

45. 64 bits are stored by: double Into long float www.prolearninghub.com

46. What is the default value for “double” data type? 0.0 null 0.0d www.prolearninghub.com

47. What is the range of data type short in Java? -128 to 127 -32768 to 32767 -2147483648 to 2147483647 None of the mentioned www.prolearninghub.com

48. Which one of this value contains float data type? www.prolearninghub.com

49. Default value for Boolean data type is: True False 1 www.prolearninghub.com

50. ____ is a reference data type: int short double array www.prolearninghub.com

The Results