IMPORTANT JAVA APPLICATION

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Job Griffin
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1 IMPORTANT JAVA APPLICATION Q1. Subodh works in Raymond International School. He has developed the following interface in Netbeans to calculate the total fee : Controls Name Purpose jtextfield txtname Student Name txtvvn VVN fees txtcfee Computer Fee jradiobutton btnsr Sr. Secondary section btnse Secondary section btnpr Primary section jbutton btnfee Get Fees BtnClr Clear The tuition fee is Rs. 300/- for Sr. Secondary, Rs. 200/- for Secondary and Rs.100/- for Primary section. The total fee is calculated as the sum of Tuition Fee, VVN and Computer Fee. 1. Write the code for calculation Total fee as per selection of Radio Buttons, when Get Fee button is clicked. The name along with the total fee to be displayed in a joptionpane dialog. (3) 2. Write the code for Clear button to clear all the jtextfields. Also Sr. Secondary Radio buton should be selected and the name field should be focused. (2)

Q2. K.K.Group of hotels has computerized it booking system. The following is the Booking From along with details: ( you may assume default names in sequence or suitable name for controls).

2 Q2. K.K.Group of hotels has computerized it booking system. The following is the Booking From along with details: ( you may assume default names in sequence or suitable name for controls). i) Write the code for exit button so that when a user clicks on exit button Application will be closed. Also display a message Thank you for your nice visit before exiting the application. [2] ii) When the command button Calculate Charges is clicked all the charges along with discount & Total computed and displayed. [3] Then criterion for the calculation of charges is given below: Total = (Room charges + food charges - discount) Single Room:- Rs.400 per day Double Room :- Rs.700 per day Breakfast:- Rs.100 per day Lunch: Rs.180 per day Dinner: Rs.200 per Day Gold card member will be given 20% discount on total charges.

Q3. Manav works in Bharti Public School. He developed the following interface in java to check the eligibility of a student for admission in a particular stream like science, commerce and humanities.

3 Q3. Manav works in Bharti Public School. He developed the following interface in java to check the eligibility of a student for admission in a particular stream like science, commerce and humanities. The user first enters the name, total percentage, status of NCC and desired stream by selecting the appropriate option button. The criterion for selection is as follows-. Net Percentage is same as Percentage entered but an additional 5% marks is given if NCC is opted. Minimum percentage for science stream is 70, for commerce 60 and for humanities 40. Controls Name Purpose jtextfield txtname Student Name txtper Percentage of marks txtnet Net Percentage txtresult Result Message jradiobutton optsc Science stream optcom Commerce stream opthum Humanities jbutton btnres Display result btncal Calculate Percentage btnclear Clear text boxes jcheckbox chkncc NCC option Write Java Code for the following a) On the Action event of the clear button all the text fields and the check boxes get cleared. (1) b) On Action event of the button Calc Per Net percentage of the student is calculated and displayed in the appropriate text filed. (2) On Action Event of the button Result, the application checks the eligibility of the students and display result as Eligible or Not Eligible in the Result text field.

4 Q4. Mr. Radhakrishnan works in State Bank of India. He wants to develop an application to calculate compound Interest and Maturity Amount for given Principal amount, account type and time (in years) as per given interface. The rate of interest will be as follows- Account Type Time (Years) Rate of Interest Fixed Deposit >= 5 10 % < 5 8 % Recurring Deposit >= 3 5 % < 3 4 % Additional 2 % will be given to Sr. Citizen, if chcsrcitizen is checked. Controls Name Purpose jtextfield txtpamt Principal amount txttime Time txtint Interest amount txtmamt Maturity amount jcheckbox chksrcitizen Senior citizen jradiobutton btnfd Fixed deposit btnrd Recurring deposit jbutton btncalculate Calculate Amount & Interest btnclear Clear Text Boxes btnexit Close Program Write code for the following- 1. On click of Calculate Button, maturity amount using compound interest formula [A=P (1+R/100) T ] and Interest amount [i.e. A- P ] to be calculated and displayed in corresponding text boxes. (3) Write the code for Clear button to clear all the jtextfields. Also Fixed deposit radio button should be selected as default. (2)

Q5. Ms. Radha works in a shopping mall. To calculate net payable amount she has developed the following GUI in NetBeans. The shop accepts payments in three modes- Cash, Debit Card, Credit Cards.

5 Q5. Ms. Radha works in a shopping mall. To calculate net payable amount she has developed the following GUI in NetBeans. The shop accepts payments in three modes- Cash, Debit Card, Credit Cards. The discount given as per mode of payment is as follows- Mode of payment Discount Cash 12% Debit Card Nil Credit Card 8% If the Member check box is checked then the customer gets an additional discount of 5% on net payable amount. I. Write the code to make the textfields for Discount( txtdiscount ) and Net Payable (txtnetpayable) uneditable. II. Write code to do the followinga) When Calculate button is clicked the discount and net payable amount is calculated as per the given criteria and displayed in discount and net payable text boxes. b) When Clear button is clicked all the text boxes should be clear. Close the application when Exit button is pressed..

6 Q6. Read the following case study and answer the questions that follow. ABC IT Solution is required to develop a student record. The school offers two different streams, medical and non-medical, with different grading criteria. The following is the data entry screen used to calculate percentage and grade. * Student can assume name for the controls. Q6. 1. Write the code for the Frame Window Activate event to disable the Percentage and the Grade text fields. (1) 2. Write the code for the Clear button to clear all the text fields. (1) 3. Write the code for the Calculate button to calculate the percentage to display in text field after finding the total marks of first term and second term (assuming that both marks are out of 100). (2) 4. Write the code for the cmdcalcgrade button to calculate the grade to display in text field txtgrade, depending on the stream selected according to the criteria in the following table: (2)

7 MARKING SCHEMES Q1. //to do code for btnfee int tot, tf,vvn,cf; String nm=txtname.gettext(); vvn=integer.parseint(txtvvn.gettext()); cf=integer.parseint(txtcfee.gettext()); if (btnsr.isselected()) tf=300; if(btnse.isselected()) tf=200; if(btnpr.isselected()) tf=100; tot=tf+vvn+cf; JOptionPane.showMessageDilog(null, Name: +nm+ +Total Fee: +tot); ( 2 marks for correct calculation and 1 mark for correct use of JOptionPane) //To do code for BtnClr txtname.settext(); txtvvn.settext(); txtcfee.settext(); btnsr.setselected(true); txtname.requestfocus(); ( 1 mark for correct code and 1 mark for use.requestfocus()) Q2. (i) // to do code for Exit button JOptionPane.showMessageDialog(null,"Thank you for your nice visit"); System.exit(0); (1 mark for each command) (ii) //to do code for Calculate Charges Button float day,rmchg, fchg, disc,tamt; day =Integer.parseInt(jTextField2.getText()); if (jradiobutton1.isselected()) rmchg=day*400; rmchg=day*700; // calculate food charges for all combination of check boxes if(jcheckbox1.isselected() && jcheckbox2.isselected() && jcheckbox3.isselected()) fchg=day*( ); if(jcheckbox1.isselected() && jcheckbox2.isselected() &&! jcheckbox3.isselected()) fchg=day*( ); if(jcheckbox1.isselected() &&! jcheckbox2.isselected() && jcheckbox3.isselected()) fchg=day*( ); if(jcheckbox1.isselected() &&! jcheckbox2.isselected() &&! jcheckbox3.isselected()) fchg=day*100; if(! jcheckbox1.isselected() && jcheckbox2.isselected() && jcheckbox3.isselected()) fchg=day*( ); if(! jcheckbox1.isselected() && jcheckbox2.isselected() &&! jcheckbox3.isselected())

8 fchg=day*180); if(! jcheckbox1.isselected() &&! jcheckbox2.isselected() && jcheckbox3.isselected()) fchg=day*200; if(! jcheckbox1.isselected() &&! jcheckbox2.isselected() &&! jcheckbox3.isselected()) fchg=0; tamt=rchg+fchg; if (jcheckbox4.isselected()) dis=tamt*20/100; dis=0; tamt=tamt-dis; jtextfield3.settext( +rchg); jtextfield4.settext( +fchg); jtextfield5.settext( +dis); jtextfield6.settext( +tamt); ( 1 mark for variable declaration, 1 mark for check box condition and 1 mark for calculation and display) Q3. (a) //to do code for btnclear txtname.settext( ) txtper.settext( ) txtnet.settext( ) txtresult.settext( ) chkncc.setselected(false); [1 mark for correct code] (b)//to do code for btncal int p; p=integer.parseint(txtper.gettext()); if (chkncc.isselected()) p=p+5; txtnet.settext( +p); [2 marks for correct code] (c)// To do code for btnres int p; p=integer.parseint(txtresult.gettext()); if( optsc.isselected()) { if ( p>=70) txtresult.settext( Eligible ); txtresult.settext( Not Eligible ); if( jradiobutton2.isselected()) { if ( p>=60) txtresult.settext( Eligible ); txtresult.settext( Not Eligible );

9 { if ( p>=40) txtresult.settext( Eligible ); txtresult.settext( Not Eligible ); [2 marks for correct code] Q4. (1) //to do code for btncalculate float a,p,r,t, i; p=float.parsefloat(txtpamt.gettext()); t= Float.parseFloat(txtTime.getText()); if (btnfd.isselected()) {if (t>=5) r=10; r=8; { if(t>=3) r=5; r=3; if(chksrcitizen.isselected()) r=r+2; a=p* Math.pow(1+(r/100), t); i= a-p; txtint.settext( + i); txtmamt.settext( +a); (2 marks for correct calculation and 1 mark for correct use of Math function) (2) //To do code for BtnClr txtpamt.settext( ); txttime.settext( ); txtint.settext( ); txtmamt.settext( +a); btnfd.setselected(true); ( 1 mark for correct code and 1 mark for use of.setselected())

10 Q6. Read the following case study and answer the questions that follow. 1. txtperc.setenabled(false); txtgrade.setenabled(false); (1/2 mark each) 2. txtftmarks.settext( ); (1 mark ) txtstmarks.settext( ); txtperc.settext( ); txtgrade.settext( ); 3. calculate percentage int f=integer.parseint(txtftmarks.gettext( )); int s=integer.parseint(txtstmarks.gettext( )); int total=f+s; double perc=(total *100)/200; txtperc.settext( +perc); (2) 4. calculate grade (1+1 for correct coding part in each radiobutton) double percent=double.parsedouble(txtperc.gettext()); String grade; if (rdbmedical.isselected()==true) { if(percent>=80) grade= A ; if(percent<80 && percent>=80) grade= B ; if(percent<60) grade= C ; if (rdbnonmedical.isselected()==true) { if(percent>=75) grade= A ;

11 if(percent<75 && percent>=50) grade= B ; if(percent<50) grade= C ; txtgrade.settext(grade);

Q2. What will be displayed in jtextfield1 and jtextfield2 after the following code is executed:

Q1. Holiday Homework, 2018-19 Class: XI Subject : Informatics Practices Q2. What will be displayed in jtextfield1 and jtextfield2 after the following code is executed: int num = 35, num1 = 46 ; jtextfield1.settext(