CBSE Class 11 Information Practices Introduction To Programming Worksheet

CBSE Class 11 Information Practices - Introduction to Programming. Students can download these worksheets and practice them. This will help them to get better marks in examinations. Also refer to other worksheets for the same chapter and other subjects too. Use them for better understanding of the subjects.

1. Create a GUI application that asks for TWO integers from user and display the result as shown in the screen shot.

 Add a new frame to the project.

 Design the frame having controls arranged as shown above.

(3 Labels, 3 Text boxes, 3 Command buttons).

 Set the names and Settings of the above controls as shown in the table below:

Control

Name

Property/Setting

TextField1

num1

Make it blank, Tahoma 12 Bold

TextField2

num2

Make it blank, Tahoma 12 Bold

TextField3

num3

Result, Deactivate, Tahoma 12 Bold

Label1

Enter first number, Tahoma 12 Bold

Lablel2

Enter second number, Tahoma 12 Bold

Label3

Answer, Tahoma 12 Bold

Button1

sum

Tahoma 12 Bold

Button2

product

Tahoma 12 Bold

Button3

diff

Tahoma 12 Bold

 Double click on “Sum” button and type the following code :

int a= Integer.parseInt(num1.getText());

int b= Integer.parseInt(num2.getText());

int c=a+b;

num3.setText(c+"");

 Save you work. Press Shift +F6/ Run to the see the output.

 Complete the coding for Product and Difference.

PORTIONS FOR FIRST ASSESMENT- (2016)

SUBJECT: INFORMATICS PRACTICES(CODE:065)

Sl.No

Chapter Name

MARKS

1

Introduction To Programming

Chapter-3 Getting Started With Programming Using IDE

Chapter-4 Programming Fundamentals

Chapter-5 Flow Of Control

35

2

Relational Database Management Systems

Chapter-10 DBMS Concepts

Chapter-11 Introduction To MySQLl

Chapter-12 Simple Queries In SQL

Chapter-13 MySQL Functions

Chapter-14 Table Creation And Data Manipulation Commands

35

TOTAL

70

Question 1. Create a GUI application that asks for TWO integers from user and display the result as shown in the screen shot.
• Add a new frame to the project.
• Design the frame having controls arranged as shown above. (3 Labels, 3 Text boxes, 3 Command buttons).
• Set the names and Settings of the above controls as shown in the table below:

• Double click on "Sum" button and type the following code:
int a= Integer.parseInt(num1.getText());
int b= Integer.parseInt(num2.getText());
int c=a+b;
num3.setText(c+"");
• Save your work. Press Shift + F6/ Run to see the output.
• Complete the coding for Product and Difference.
Answer:
To complete the calculations, we write the Java event handling code for both the Product and Difference buttons.

Code for the "Product" button:
int num1Value = Integer.parseInt(num1.getText());
int num2Value = Integer.parseInt(num2.getText());
int productResult = num1Value * num2Value;
num3.setText("" + productResult);

Code for the "Difference" button:
int valueA = Integer.parseInt(num1.getText());
int valueB = Integer.parseInt(num2.getText());
int subtractionResult = valueA - valueB;
num3.setText(String.valueOf(subtractionResult));
In simple words: First, read the text from the fields num1 and num2, convert those text values into integer numbers, calculate the multiplication or subtraction, and display the result inside the third text field num3.

Exam Tip: Always make sure to use `Integer.parseInt()` to parse string text into numerical data types before attempting any mathematical calculations in Java Swing applications.

Complete List of Java Keywords

Portions for First Assessment - (2016)
Subject: Informatics Practices (Code: 065)