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Str1 - HelloDear Friend

Str2 - Hello

Java is a case sensitive language as Java distinguish between uppercase and lowercase very strictly. For example:

int t num1, num1;

Although both variables have same name in the above statement but java will treat them two different variables due to first character in different case.

(i) == operator

As = operator is assignment operator which will be used to assign the values to any variable/ constant white = = is comparison operator. It check for equality.

(ii) int num1 = 5, num2 = 10;

num1 = num1+ 5;

num2 = num2- 5;

<JTextField>.setEditable(false);

(a) For loop

(b) The setEnabled (true) enables a component for use, and setEnabled (false) disables it. SetEditable method prevents users from changing a field.

(c) (i) - Keyword.

(ii) - can't start with number.

The correct answer:

126

The correct output

911

(i) IDE : IDE is an acronym for Integrated Development Environment which is a work environment that integrates all tools necessary for Application Development and makes them available as part of one environment.

(ii) Inspector Window : It provides a hierarchical tree view of various components. Each form is represented by a root node within which all components in the form's class are contained. 

(iii) Form : Forms are used to accept data (input) and submit data to an external agent for processing.

The TextField displays the obtained text in unencrypted form whereas password field displays the obtained text in encrypted form. This component allows confidential input like passwords which are single line.

jTextField1 as 81 will be displayed jTextField2 as 3546 will be displayed.

After executed

output:

25

I.  VASU

VASUMBAKAM

VASUMBAKAM10

12

II. int num=Integer.parseInt(jTextField1.getText());

do

{

jOptionPane1.showMessageDialog(null,num);

num=num*20;

} while(num<=40);

jOptionPane1.showMessageDialog(null,"Bye Bye");

(i) int wfee = 0, tfee = 0;

int nop = Integer.parseInt(JTextField1.getText());

int efee = nop * 500;

if(jCheckBox1.isSelected())

wfee = nop * 500;

tfee = efee * wfee;

j TextField2. setText(" " + efee);

jTextField3.setText("" + wfee);

jTextField4.se tText(" " + tfee);

(ii) JTextField1.setText(" ");

JTextField2.setText(" ") ;

JTextField3.setText(" ") ;

JTextField4.setText(" ") ;

(iii) System.exit(0);

(i) Correct code required for 'INTEREST RATE' button to display interest rate as per the above given criteria:

if (R1.isSelected() = = true)

T3.setText(" 4");

else if(R2.isSelected() = = true)

T3.setText("6");

if(R3.isSelected() = =true)

T3.setText("8");

(ii) Correct code required for 'SI' button

double amt = Double.parseDouble(T2.getText());

double int_rate =Double.parseDouble(T3.getText());

int year = Integer.parseInt(T4.getText());

double si = (amt*int_rate*year)/100;

T5.setText(" " + si);

(iii) t1.setText(" ");

t2.setText(" ");

t3.setText(" ");

t4.setText(" ");

t5.setText(" ");

(i) float amt, discount = 0.0;

int n = Integer.parselnt(TextNoofpens.getText());

amt = n * 25;

If (jSpeicalCustomer.isSelected() = = True)

{

discount = amt + 0.05;

amt = amt - discount;

}

jTextDiscount.setText(discount.toString());

jAmount.setText(amt.toString());

(ii) jNoofpens.setText(" ");

jTextDiscount.setText(" ");

jAmount.setText(" ");

jSpecialCustomer.setSelected(False);

(iii) System.exit(0);

(i) float bill = Float.ParseFloat(txt Bill.getText()) ;

float groc = Float.ParseFloat(txt Groceries.getText()) ;

float enter = Float.ParseFloat(txt Entertainment.getText ( ) ) ;

float other = Float.ParseFloat(txtother.getText());

float sum = bill+groc+enter+other;

txtsumofExpenses.SetText(Float.tostring(sum) ) ;

if(chkMoney.isselected( ))

sum = sum + 3000.00;

txtGrand.setText(Float.tostring( sum));

float income=Float.parseFloat(txtIncome.getText()) ;

float saving= income- sum;

txtsavings.setText(Float.tostring( savings));

(ii) txtincome.setText (" ");

txtBill.setText(" ");

txtGroceries.setText (" ") ;

txtEntertainment.setText (" ") ;

txtother.setText (" ") ;

txtsumofExpenses.setText (" ") ;

txtBrand.setText ( " ") ;

txtsavings.setText (" ") ;

ChkMoney.Setselected(false) ;

(iii) System exit(0);

(i) jTextField4.setText("0");

jTextField5.setText("0");

jTextField4.setEditable(false);

jTextField5.setEditable(false);

(ii) double discount = 0.0 ;

double billAmount = Double.

parseDouble(jTextField2.getText());

if(jRadioButton1.isSelected())

discount = 0.20;

if(jRadioButton2.isSelected())

discount = 0.15;

if(jRadioButton3.isSelected())

discount = 0.10;

jTertField3.setText(billAmount * discount + " ")

if (billAmount > 25000)

jTextField4.setText(billAmount * 0.05+ " ");

jButton2.setEnabled(true);

(iii) doube netAmount = Double.

parseDouble(jTextField2.getText()) - Double.

parseDouble(jTextField3.getText()) -Double.

parseDouble(jTextField4.getText());

jTextField5.setText(netAmount + " ");

(i) float qty1 = 0, qty2 = 0, qty3 = 0,amt1 = 0,amt2 = 0 ,amt3 = 0,total;

if (jCheckBox1.isSelected())

qty1 = Float.parseFloat(jTextField1.getText());

if (jCheckBox2.isSelected())

qty2 = Float.parseFloat(jTextField2.getText());

if ( CheckBox3.isSelected())

qty3 = Float.parseFloat(jTextField3.getText());

amt1 = qty1 * 1500;

amt = qty2 * 1000;

amt = qty3 * 500;

total = amt1 + amt2 + amt3;

jTextField4.setText(" " + amt1);

jTextField5.setText(" " + amt2);

jTextField6.setText(" " + amt3);

jTextField7.setText(" " + total);

(ii) jTextField1.setText(" ");

jTextField2.setText(" ") ;

jTextField3.setText(" ") ;

jCheckBox1.setSelected(false);

(iii) System.exit(0);

(i) int s = Integer.parseInt(jTextField1.getText().trim());

int e = Integer.parseInt(TextField2.getText().trim());

while (s <= e)

{

jTextArea1.append(" " + s +" ");

S+ = 2;

}

(ii) jTextField1.setText(" ");

jTextField2.setText(" ") ;

jTextField3.setText(" ");

(iii) System.exit (0);

System.exit ( );

(i) private void jButton1ActionPerf ormed(java.awt.event.ActionEvent evt)

{ 

int a = Integer.parseInt(jTextField1.getText());

int b = Integer.parseInt(jTextField2.getText());

int c = Integer.parseInt(jTextField3.getText());

int total = a + b + c;

jTextField4.setText(Integer.toString(total));

}

(ii) private void jButton2ActionPerformed(java.awt.event.ActionEvent evt)

{ 

int t = Integer.parseInt(jTextField4.getText());

int a = t/3;

if(a >=80)

{ jTertField5.setText("A");

} 

else if(a>55 && a<=55)

{ j TextField5. setText("B");

}

else if(a>50 && a<=65)

{ jTextField5.setText("C");

}

else if(a< =50)

{ jTextField5.setText("D");

}

}

(iii) privatevoidjButton3ActionPerformed(java.awt.event.ActionEvent evt)

{

System.exit(0);

}

These tags are part of XML code.

These tags are different.

1. Size

2. Face

3. Color

<UL TYPE = "a" START = "4">

OR

<UL TYPE = "something''>

(i) XML syntax is large.

(ii) It occupies much higher memory which increases costs on transmission, storage and processing costs.

(iii) Namespace support is difficult.

(i) XML is text based. 

(ii) Information can be understood easily due to its unicode structure and hierarchical representation. 

(iii) It is platform independent which makes it very easy to use. 

(iv) It supports most of the documents. 

(v) XML is free and extensible. 

(vi) It can be used to create new languages. 

(vii) It is a W3C Recommendation.

XML elements must follow these naming rules: 

(i) Names can contain letters, number and other characters 

(ii) Names cannot start with a number or punctuation character. 

(iii) Names cannot start with xml, XML or Xml... 

(iv) Names cannot contain spaces. 

(v) Any name can be used, no words are reserved.

<html>

<title> Table </title>

<body>

<table border = "2" width = "20%">

<tr align = "center">

<td rowspan = "4" width = "20%" align = "center" >

A <br> B <br> C </td> <td colspan : "2" align = "center"> D </td>

</tr>

<tr>

<td align = "center"> E </td>

<td align = "centet"> F </td>

<td align = "center" rowspan = "2"> G </td>

</tr>

<tr>

<td align = "center" colspan = "2"> H </td>

</tr>

</table> </body> </html>

Src - Specifies the URL of an image.

Align - Specifies the alignment of an image according to surrounding elements.

The <title> tag is required in all HTML documents and it defines the title of the document.

The <title> element:

(i) defines a title in the browser toolbar.

(ii) provides a title for the page when it is added to favorites.

(iii) displays a title for the page in search-engine results.

A well formed XML document contains text and XML tags which confirm with the XML syntax.

Valid XML documents must be well formed and are additionally error checked against a DTD.

< ?xml version = "1.0" encoding = "ISO-8859-1'

?>

<! DOCTYPE employee SYSTEM "emp-dtd">

<employee>

<name> Rekha </name>

<empid> 6098 </empid>

< designation> Manager </designation>

</employee>

A valid document is used when documents require error checking, and many documents need to follow the same guidelines.

(i) <HR> horizontal rule (or) Separate content or define thematic change.

(ii) <BR> Line break.

XML stands for Extensible Markup Language.

HTML is used to design web pages. XML is used to transport data.

(i) < input type = "text">

(ii) < input type = "radio">

(iii) < input type = "checkbox">

(iv) < input type = "button" value = "submit" >

With RadioButtons, only one radio button out of many choices can be selected whereas as many CheckBoxes can be selected as desired.

SINGLE (List box allows single selection only) SINGLE_INTERVAL (List box allows single continuous selection of options using shift key of keyboard) 

MULTIPLE_INTERVAL (List box allows multiple selections of options using ctrl key of keyboard).

A list is used to get one or more options out of several given options which may or may not be mutually exclusive. This may seem to be the case where CheckBoxes are to be used, but the difference is in the number of options available. If the number of options is small, then CheckBoxes can be used. In case of large number of options, using CheckBoxes may take up a lot of space on the form and it may also be inconvenient for the user to select the desired options. In such cases Lists are preferred over checkboxes. Examples of such cases are: To select cities out of a given list of cities, to select magazines out of a given list of magazines, etc.

(i) The TextField allows the user to enter a single line of text only. But TextArea component allows to accept multiline input from the user or display multiple lines of information. 

(ii) The ListBox is used to display a list of items but does not have a text field where as a Combo Box is used to display a drop down list of items. It is a combination of a text box in which a user enters an items and a drop downlist from which the user selects an item. 

(iii) getText() - gets the value entered in a TextField. setText() is used to print a value in the TextField.

if (cbo1.editable)( = = true)

The correct output

25 16 9 4

The correct output

5

The correct output

90

1. Syntax Error

2. Program will not Compile

3. No output

GREAT

COUNTRY INDIA

jTextField1 = 17

jTextField2 = Commerce humanities

jTextField3 = mme

jTextField4 = Commerce Humanities

Only statement (ii) is true because Java does not support multiple inheritance.

Code to calculate and display commission:

int com = 0;

if(jRadioButton1.isSelected())

com = 500;

else if(jRadioButton2.isselected())

com = 1000;

else if(jRadioButton3.isSelected())

com = 2000;

iTextField3.setText("" + com);

Code to calculate and display Gross Salary:

int sal,comm;

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

comm = Integer.parseInt( TextField3.getText());

jTextField4.setText(" " + (sal +comm));