Informatics Practices - Assignments. A Practical Workbook

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1 Informatics Practices - Assignments (based on JAVA & SQL) A Practical Workbook Class XII 1

Create a java Desktop application to enter your friends ROLLNO,NAME, ADDRESS,SECTION and grade, Using a JButton s click event handler, display the details of input into a JTextArea control.

2 Assignments based on JAVA 1. Create a java Desktop application to find the largest number among the three floating point numbers. The following is the screen used to find largest number among three numbers: 2. Create a java Desktop application to enter your friends ROLLNO,NAME, ADDRESS,SECTION and grade, Using a JButton s click event handler, display the details of input into a JTextArea control. Note that the JTextArea background would be in yellow color. 3. Create a java Desktop Application to find salary of the employee on the basis of Designation selected using JCombobox. The JCombobox contains the following designation with respective salaries. Designation Salary Project Manager Manager Architect Team Leader Sr. Programmer Programmer Operator

4. Create a Java Desktop application to do mathematical operations like ADDITION, SUBTRACTION, MULTIPLICATION, DIVISION

Write a program to input any number and print them in reverse order using while statement.

Vidyarthi wotks in Blossoms Public School as a Programmer. he is required to develop a student record.

3 4. Create a Java Desktop application to do mathematical operations like ADDITION, SUBTRACTION, MULTIPLICATION, DIVISION and MODULUS of two numbers and display the result with appropriate text box after clicking a JButton control. 5. Write a program to input any number and print them in reverse order using while statement. Whereas the input number must be positive. The following is the screen used to print the reverse of a number. 6. Mr. Vidyarthi wotks in Blossoms Public School as a Programmer. he is required to develop a student record. The school offers two different streams, Medical and Non-medical, with different grading criteria. The school also offers incentive to the NCC cadets in the two streams is given below 3

4 (A) Write the commands to disable the textboxes txtpercentage and txtgrade. Also, set Medical as default stream. (B) Write the code for cmdclacper to calculate the percentage after finding the total marks of first term and second term (assuming that both marks are out of 100). Also ensure (C) Write the code for cmdclacgrade to calculate the grade depending on the stream selected according to the criteria given below (D) Write the code for cmdclear Command Button to clear all the text boxes and check box and Medical as default stream. 7. Define a class report with the following specification Data Member : ADNO Integer NAME String Marks 5 Floating Point values Average Average marks obtained Getavg() to compute the average obtained in five subjects Member methods Read_info() Displayinfo function to accept values for ADNO,NAME,MARKS and invoke the function getavg() function to display all data member on the screen you should give function definitions. 4

Add major cities to both ListBox and ComboBox through a TextBox, Also provide three command button for clearing the TextBox,ListBox and ComboBox.

5 Calculate the average mark and print a message You are Passed if percentage is greater than 40, otherwise print You are Failed. Also, at runtime, the colour of You are passed must be Blue and You are failed must be Red with font size Create an application to design a form counting ListBox and Combobox. Add major cities to both ListBox and ComboBox through a TextBox, Also provide three command button for clearing the TextBox,ListBox and ComboBox. When you click on a button (JButton), the action will affect to respective controls. Also, use command buttons for clearing the TextBox, ListBox and ComboBox. See the form given below. 9. Read the following case study and answer the questions that follows: Sagar electronics has the following products with their list prices given. The store gives a 10% discount on every product. However, at the time of festival season, the store gives a further 7% festival discount after 10% 5

Note that the product Name is stores in JComboBox control. 10. HDFC Bank frequently needs to calculate the interest and amount due for his clients.

6 Note that the product Name is stores in JComboBox control. 10. HDFC Bank frequently needs to calculate the interest and amount due for his clients. He ask his software programmer to design an interest calculator which will calculate the compound interest and amount due. The bank offers two different accounts fixed deposit and recurring deposit with different rage criteria. The programmer uses Java language with NetBeans IDE to develop this. 6

7 (A) Write the code to disable the text boxes txtinterest, txtamount, txtrate and txtdate in the form when the from activated. (B) Write the code for cmdclear command button to clear all the textboxes and box except txtdate. Set the default choice in the option button as Fixed Deposit. (C) Write the code for the click event of the command button cmdcalculate to calculate compound Interest and amount and display the values in textboxes txtinterest and txtamount depending on the principal, rate and time. Note that the compound interest is calculates ad P*(l+r/100)^T & amount as Principal + Interest. Rate is calculated based on the time according to the following table. An additional rate of 2% is givento senior citizens i.e. if the chksr chechbox ix checked (D) Write the code for cmdexit to exit the application 11. Define a class Batsman with the following specification: Data Members BCODE Integer BNAME String INNINGS,NOTOUT Integer 7

RUNS BARAVG Calcavg() Integer It is calculates according to the formula : bataavg=runs/(innings notout) Function to compute batavg Member Function readdata() Function to accept values for bcode,

8 RUNS BARAVG Calcavg() Integer It is calculates according to the formula : bataavg=runs/(innings notout) Function to compute batavg Member Function readdata() Function to accept values for bcode, name, innings, notout and invoke the calculate function calcavg() displaydata() Function to display the data member on the screen. (i) (ii) Define a class Batsman with required specification. Write the code for Batting Average buttons click event procedure to operate the class batsman s method. 12. Develop a Java Desktop application to create a simple menu and perform its action event to display simple messages for each menu item. Notice that the Menu item are shown as given figure : 8

/ 4 (b) Displaying the Distinction / Average Marks based on the Total Marks scored. (c) Displaying the grade (A, B, C, D, F) based on the Average Marks Scored.

9 Write the code for click event procedure for all File menu options with different dialog boxes containing different icons. 13. Create a Java Desktop Application to perform the following calculations : (a) Calculation of Total and Average Marks as : total = english + maths + science + history average = total / 4 (b) Displaying the Distinction / Average Marks based on the Total Marks scored. (c) Displaying the grade (A, B, C, D, F) based on the Average Marks Scored. Average Result Grade >= 75 >= 60 >= 50 >= 40 Otherwise Distinction First Class Second Class Average Fail A B C D F Enter four subjects marks called : English, Maths, Science and History. Also the entered marks should be between 0 and 100 for each subject. 9

14. Create a java Desktop Application to find the Incentive (%) of Sales for a Sales Person on the basis of following feedbacks : Feedback Incentive (%) Maximum Sales Excellent Customer Feedback

10 14. Create a java Desktop Application to find the Incentive (%) of Sales for a Sales Person on the basis of following feedbacks : Feedback Incentive (%) Maximum Sales Excellent Customer Feedback Maximum Count of Customer Note that the sales entry should not be space. Calculate the total incentive as : Sales amount * incentive. 15. Develop a Desktop Application to test all String manipulation methods using a JButton click event procedure. Note that the result of String manipulation methods will be placed in JTextArea control. Note. The operations will be implemented using two strings as : your name and school. 10

11 16. Write an application to add records into the Customer table. The Customer table has the following entities : Field Name Data Type Width Constraint Customer_Id Customer_Name Address Phone Int Varchar Varchar Varchar Primary Key Not Null Note that the Java NetBeans IDE for customer data entry screen looks like as follows : 11

12 17. Write an application to navigate the above Customer table records using MoveFirst, MoveNext, MoveLast and MovePrevious resultset properties. Remember that the four operations will handle by four different command buttons. 12

KENDRIYA VIDYALAYA BAILEY ROAD SECOND SHIFT HOLIDAY HOME WORK CLASS: XII SUB: ENGLISH

KENDRIYA VIDYALAYA BAILEY ROAD HOLIDAY HOME WORK CLASS: XII SUB: ENGLISH Q.1. Write a letter to the Editor. Q.2. Write a complaint. Q.3. Write a Job application. Q.4. Write a comprehension. Q.5. Write