IP Assignment for class XI (2015-16)

Dear students,
the following assignment is for looping and switch case statements.

Assignment for Informatics Practices

Class – XI (2015-16)

1.       What will be the output of the following programs :

a.       for (int k=1; k<=10; k=k+3)          

        jTextArea1.append("\n"+k);

b.      for(int k=1;k<=10;k+=3)         

        jTextArea1.setText(jTextArea1.getText()+"\n"+k);

c.       int a=5 , sum=0;

while (a>3)

 {

sum+=a; 

 a-=2; 

                              }

d.      int w=6, sum=0;

do

{

                sum+=w;

                w-=2;

} while(w>3);

e.       for (int i=10; i<=30; i+=4)

        jTextArea1.setText(jTextArea1.getText() + ” “ + Integer.toString(i));

f.        int x=2, y=20;

while(x<=y)

{

                JOptionPane.showMessageDialog(null, “ “+x);

                x=x+3;

}

g.        int x, y;

x= Integer.parseInt(jTextField1.getText());

y= Integer.parseInt(jTextField2.getText());

if (x=y)

                jTextField3.setText(“x  and y are equal”);

else

                jTextField3.setText(“x  and y are equal”);

h.       int a=1;

do

{

                jTextArea1.setText(Integer.toString(a+2));

                a=a+2;

} while(a<=6);

i.         String name=”Akash Jaiswal”, Name;

Name=jTextField1.getText();

jTextArea1.setText(“Welcome Mr.”+name);

jTextArea2.setText(“Hello  “+Name+”\t You are a Member of Microsoft.\n\tBill Gates”);

2.       Rewrite the following code using switch case statement without affecting the output of the following codes :

a.        char a;

if (a==’b’)

                jTextField1.setText(“Blue Ray ordered”);

else if (a==’d’)

                jTextField1.setText(“DVD ordered”);

else if (a==’c’)

                jTextField1.setText(“Compact Disk ordered”);

else if (a==’p’)

                jTextField1.setText(“Printer ordered”);

else if (a==’s’)

                jTextField1.setText(“Scanner ordered”);

else

                jTextField1.setText(“Wrong Choice”);

b.      int ch=0;

ch=Integer.parseInt(jTextField1.getText()) ;

if (ch==1)

                JOptionPane.showMessageDialog(null,“It is Monday”);

else if (ch==2)

                JOptionPane.showMessageDialog(null,“It is Tuesday”);

else if (ch==3)

                JOptionPane.showMessageDialog(null,“It is Wednesday”);

else if (ch==4)

                JOptionPane.showMessageDialog(null,“It is Thursday”);

else if (ch==5)

                JOptionPane.showMessageDialog(null,“It is Friday”);

else if (ch==6)

                JOptionPane.showMessageDialog(null,“It is Saturday”);

else if (ch==7)

                JOptionPane.showMessageDialog(null,“It is Sunday”);

else

                JOptionPane.showMessageDialog(null,“Please enter number between 1 to 7”);

c.       int code=0;

code=Integer.parseInt(jTextField1.getText()) ;

if (code==1)

                JOptionPane.showMessageDialog(null,“Nokia Mobile”);

else if (code==2)

                JOptionPane.showMessageDialog(null,“Samsung  Mobile”);

else if (code==3)

                JOptionPane.showMessageDialog(null,“Sony  Mobile”);

else if (code==4)

                JOptionPane.showMessageDialog(null,“Microtech  Mobile”);

else if (code==5)

                JOptionPane.showMessageDialog(null,“Apple Mobile”);

else

                JOptionPane.showMessageDialog(null,“Ordered mobile not supported. Use code 1 to 5”);

d.      if (jComboBox1.getSelectedIndex()==0)

                JOptionPane.showMessageDialog(null,“You belong to India”);

else if (jComboBox1.getSelectedIndex()==1)

                JOptionPane.showMessageDialog(null,“You belong to Canada”);

else if (jComboBox1.getSelectedIndex()==2)

                JOptionPane.showMessageDialog(null,“You belong to Kenya”);

else if (jComboBox1.getSelectedIndex()==3)

                JOptionPane.showMessageDialog(null,“You belong to Australia”);

e.      if (jComboBox1.getSelectedIndex()==0)

                jTextField1.setText(“Science  stream”);

else if (jComboBox1.getSelectedIndex()==1)

                JOptionPane.showMessageDialog(null,“You belong to Canada”);

else if (jComboBox1.getSelectedIndex()==2)

                JOptionPane.showMessageDialog(null,“You belong to Kenya”);

else if (jComboBox1.getSelectedIndex()==3)

                JOptionPane.showMessageDialog(null,“You belong to Australia”);