DEHRADUN PUBLIC SCHOOL II-TERM ASSIGNMENT ( ) SUBJECT-INFORMATICS PRACTICES (065) CLASS XI

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1 DEHRADUN PUBLIC SCHOOL II-TERM ASSIGNMENT ( ) SUBJECT-INFORMATICS PRACTICES (065) CLASS XI Chapter 3. Getting Started with Programming using IDE 1. How is ordinary compilation different from Java compilation? 2. What do you understand by Visual programming? 3. What is Write Once Run Anywhere characteristic of Java? 4. What is the relationship of properties, methods and an event? 5. What are container and child controls? 6. What is bytecode? 7. What are RAD tools? 8. Name the two types of Java programs? Chapter 4. Programming Fundamentals 9. What is the difference between 33 and 33L or 33l? 10. What is the difference between 1.234f or 1.234F and 1.234D or 1.234d. 11. Predict the output: a. double a= 3.0; double b=4.0; double c= Math.sqrt(a*a + b*b); System.out.println( c= +c); b. int y=0; x = y++ + 2*y; System.out.println( x = +x); c. int x=5; int y=(5*++x)%7; System.out.println( x= +x); System.out.println( y= +y); d. int sum, t; t =3, sum = 27; sum = sum + 2*(++t); System.out.println( sum + sum); 12. Distinguish between a unary, a binary and a ternary operator. 13. Name the character set supported by java. 14. What are keywords? Can keywords be used as identifiers? 15. What is an identifier? 16. What are literals? How many types of integer literals are available in java? 17. Which escape sequences represent the newline character & null character? 18. What is meant by implicit and explicit type conversion? 19. Which class is used for using different mathematical methods in java program? Chapter 5. Flow of Control 20. What is the significance of break in a switch statement? 21. Predict the output: a. int p = 8; do System.out.print( in the loop ); p*=3; Page 1 of 5

2 } while(p%3 = = 0); b. int m,n=0; for (m=1;m<=4;m++) n+=m; n--; } System.out.println ( m= +m); System.out.println ( n= +n); c. for (int i=2;i<=5;++i) System.out.print(i + => ); for (int j=1;j<=3;++j) System.out.print(i*j +, ); } System.out.println( ); } d. int i=0; x=0; while(i<7) x+=i; i+=2;} System.out.println( i = +i); System.out.println( x= +x); 22. Write a short java code to print the factorial of the given number. The number is inputted by the interface and you can suppose the names of the control. 23. Write a short java code to print the Fibonacci series up to n terms. 1, 2, 3, 5, 8, n. 24. Write a java code to count the number of digits of a given number. 25. Write a java program to swap two numbers without using the third one. 26. Write a short java program to print the following output: (a) (b) * (c) AAAAA 1234 ** AAAA 123 *** AAA 12 **** AA 1 ***** A 27. Write a short java code to print the sum of following series: Write a short java code to find the sum of the series: 1,8, Chapter 6. Java IDE Programming -I 29. Define Object with the help of an example. 30. Define Class with the help of an example. 31. Write brief about JFC. 32. Name the component classes of swing API for the following components(i) frame (ii) button (iii) panel Page 2 of 5

c. Occurs when the user presses a key. d. Occurs when the status of the window changes. 35. Design an application to find out the largest number among the three floating point numbers.

3 33. What command would you write in actionperformed( ) event handler of a button, in order to make it exit button. 34. Name the event listener and the event listener method that would respond to the following type of action: a. Occurs when user completes an action. b. Occurs when a component receives or loses focus. c. Occurs when the user presses a key. d. Occurs when the status of the window changes. 35. Design an application to find out the largest number among the three floating point numbers. The following is the screen used to find largest number among three numbers: Chapter 7. Java IDE Programming II 36. What is the difference between radio button and checkbox component? 37. Give the use of the following properties of the label component: a) icon b) text c) enabled 38. Give the use of the following methods of the textfield component: a) Void settext(string) b) String gettext( ) 39. What is the difference between textfield control and textarea control? 40. What happens if we do not make the radio button as a part of common group button group? 41. Give the use of the following properties of check box: a) Mnemonic b) selected 42. Name the event which gets fired when a checkbox is selected. 43. What do you understand by Focus? What happens when FOCUS_GAINED event and FOCUS_LOST event occurs? 44. What is the difference between textfield and a password field? 45. Design an application that accepts the user-id and password.the sample screen is being shown below: 46. Reena has developed an application in Net Beans for the Life Line Laboratory at South Extension as shown below: Page 3 of 5

The charges for the test available are given in the following table: Test Name Charges(Rs) Thyroid 350 TLC/DLC 100 HB 20 SGPT/SGOT 150 i) Write the code to make the textfield for Total Amount

47. NHPC has different categories of workers, who are paid differently hourly rates (R). Wages are then determined after accepting the number of hours (H) one works during the week.

4 The charges for the test available are given in the following table: Test Name Charges(Rs) Thyroid 350 TLC/DLC 100 HB 20 SGPT/SGOT 150 i) Write the code to make the textfield for Total Amount uneditable. ii) Write code to do the following: a. Calculate and display the total amount in the corresponding text field when calculate button is clicked. b. Clear all the textfields. c. Close the application when Exit button is clicked. 47. NHPC has different categories of workers, who are paid differently hourly rates (R). Wages are then determined after accepting the number of hours (H) one works during the week. The different classes are paid as follows: Category Hourly Rate Unskilled Rs Semi Skilled Rs Skilled Rs Chapter 8. Java IDE Programming III 48. Which property of list box is used to type the list values? 49. What is the use of selectionmode property of list box? 50. What is the difference between Combo box and List box? 51. Give the use of the following methods: a) void clearselection( ) b) int getmaxselectionindex( ) c) Object getselectedvalues( ) d) Boolean isselectionempty( ) e) Void setselectedindices( ) 52. A list namely mylist has selectionmode property set to SINGLE_INTERVAL. How would you obtain: a) The indices of selected values b) the selected values Page 4 of 5

5 53. Write code that obtains the selected item of combobox1(cb1) and adds to the list of combobox2(cb2). 54. Write the code for List Price Button to display the list price in textfield depending upon the item selected. Product Name List Price(Rs) Washing Machine Color Television OTG 8000 CD Player Glamour Garments has developed a GUI application for their company as shown below: The company accepts payment in 3 modes- cheque, cash and credit card. The discount given as per mode of payment as follows: Mode of Payment Discount Cash 8% Cheque 7% Credit Card 0% If the Bill Amount is more than then the customer gets the additional discount of 10% on Bill Amount. a) Write code for Calculate Discount button, the discount should be calculated as per the given criteria and it should be displayed in discount textfield. b) Write code for Calculate Net Amount button, the net amount should be calculated and displayed in amount textfield. Chapter 9. Programming Guidelines 56. What do you mean by Syntax errors and Sementic errors? 57. What is echo printing? 58. Define: a)bug b) Prettyprinting c) Verification d) exception handling 59. What do you understand by debugging? 60. How are meaningful identifiers useful? Page 5 of 5

DEHRADUN PUBLIC SCHOOL ASSIGNMENT SUBJECT-INFORMATICS PRACTICES (065) CLASS XI

DEHRADUN PUBLIC SCHOOL ASSIGNMENT 2018-19 SUBJECT-INFORMATICS PRACTICES (065) CLASS XI CH-1 HARDWARE CONCEPTS Q1. Arrange the following units of memory in ascending order of their capacity: Terabyte, Petabyte,