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2015 Java Programming
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2.
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(a)
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Write the values of t after the
execution of the following code:
int t;
int s;
s=6;
t = (8 * s++) % 7 ;
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1
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Ans.
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6
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(c)
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In a SWITCH statement, what is the
purpose of BREAK statements?
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1
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Ans.
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A BREAK statement causes control to
exit the SWITCH statement.
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(e)
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Write Java Code to assign the value 70
to variable y. Then decrease the value of y by 5 and store it in variable z.
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2
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Ans.
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y = 70;
z = y – 5;
OR
y = 70;
y = y – 5;
z = y;
OR
y = 70;
OR
y = 70;
y -= 5;
z = y;
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(f)
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Write the output that will be
generated by the code given below:
int t;
int i;
for (i = 5; i <=10; i = i+5);
{
t = i+3;
System.out.printIn(“ “+t);
}
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2
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Ans.
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8
13
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4.
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(a)
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The
following code has some error(s). Rewrite the correct code underlining all
the corrections made.
int written,
interview;
written =
Integer.parseInt(jTextField1.getText());
interview =
Integer.parseInt(jTextField2.getText());
if (written
<80) OR (interview <15)
{
System.out.println(Not selected);
}
Else;
{
System.out.println(“Selected”);
}
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2
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Ans.
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int written,
interview;
written =
Integer.parseInt(jTextField1.getText());
interview =
Integer.parseInt(jTextField2.getText());
if ( (written
<80) || (interview <15) )
{
System.out.println(“Not selected”);
}
else
{
System.out.println(“Selected”);
}
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(b)
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How many times will the following loop
execute:
int z = 7, sum = 0;
do
{
sum =
sum + z;
z = z+2;
System.out.printIn(“ “+z);
}
while (z <=12);
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2
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Ans.
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3 times
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(c)
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Rewrite the following program code
using IF ELSE IF instead of SWITCH statement.
String rem;
int code =
Integer.parseInt(jTextField1.getText()):
Switch(code)
{
case 1: rem =”Classes start on 8th
April”;
break;
case 2: rem =”Classes start on 10th
April”;
break;
case 3: rem =”Classes start on 12th
April”;
break;
default: rem =”Contact
Admin Office”;
}
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2
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Ans.
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String rem;
int code =
Integer.parseInt(jTextField1.getText()):
if (code==1)
rem = ”Classes start on 8th April”;
else if (code==2)
rem = ”Classes start on 10th April”;
else if (code==3)
rem = ”Classes start on 12th April”;
else
rem =”Contact Admin Office”;
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(d)
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Write the values of sum and t after execution
of following code:
int sum, t;
sum = 27;
t = 3;
sum = sum 2 * (++t);
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2
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Ans.
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sum = 35
t = 4
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(e)
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What will be the contents of
jTextField1 and jTextField2 after executing the following code:
String s = “Best”;
String r = “Luck”;
String z;
Z = r.concat (s);
jTextField1.setText(z);
jTextField2.setText(r.toUpperCase());
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2
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Ans.
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jTextField1 = LuckBest
jTextField2 = LUCK
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(f)
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Seema is a junior programmer at ‘Avon
Shoe Factory’. She has created the following GUI in Netbeans.
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3 items namely
shoes, sandals and slippers are manufactured by the factory.
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A buyer can buy
more than one item @ a time.
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Each pair of
shoes cost Rs1500.00 each pair of sandals cost Rs1000.00 and each pair of
slippers cost Rs500.00.
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Amount to be
paid for that item will be displayed in front of the item.
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For Eg: if shoe
is selected, the quantity enter is 20 then amount should be displayed as 30,000.
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(a)
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When “CALCULATE” is clicked, the
amount should be displayed in front of each item and total amount should be
displayed in appropriate Text Field?
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3
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Ans.
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float qty1=0, qty2=0, qty3=0, amt1=0,
amt2=0, amt3=0, total;
if(jCB1.isSelected())
qty1=Float.parseFloat(jTF1.getText());
if(jCB2.isSelected())
qty2=Float.parseFloat(jTF2.getText());
if(jCB3.isSelected())
qty3=Float.parseFloat(jTF3.getText());
amt1=qty1*1500;
amt2=qty2*1000;
amt3=qty3*500;
total=amt1+amt2+amt3;
jTF4.setText(""+amt1);
jTF5.setText(""+amt2);
jTF6.setText(""+amt3);
jTF7.setText(""+total);
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(b)
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When “CLEAR” button is clicked, all
the Text Fields and Check Boxes should be cleared.
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1
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jTF1.setText("");
jTF2.setText("");
jTF3.setText("");
jTF4.setText("");
jTF5.setText("");
jTF6.setText("");
jTF7.setText("");
jCB1.setSelected(False);
jCB2.setSelected(False);
jCB3.setSelected(False);
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(c)
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When “STOP” button clicked, the
application should close.
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1
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Ans.
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System. exit(0);
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Saturday, 27 February 2016
11th & 12th IP 2015(Delhi) Common Assignment
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