BCA and B.Sc Programs - Programming in Java Lab - Bharathiar University -Program 10 - Write a Java Program to create a frame which responds to the mouse clicks. For each events with mouse such as mouse up, mouse down, etc, the corresponding message to be displayed

 

Bharathiar University

Programming Java Lab

Java Program 10

Write a Java Program to create a frame which responds to the mouse clicks. For each events with mouse such as mouse up, mouse down, etc, the corresponding message to be displayed

 

Source Code

import javax.swing.*;

import java.awt.*;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

public class MouseClicks extends JFrame {

    

    public MouseClicks() {

        setTitle("Mouse Events ");

        setSize(400, 300);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

       

         JLabel l=new JLabel();  

        add(l);  

        

        addMouseListener(new MouseAdapter() {

           

            public void mouseClicked(MouseEvent e) {

                l.setText("Mouse Clicked");

            }

                        

          

            public void mouseEntered(MouseEvent e) {

                l.setText("Mouse Entered");

            } 

         

            public void mousePressed(MouseEvent e) {

                l.setText("Mouse Pressed");

            }

          

            public void mouseExited(MouseEvent e) {

                l.setText("Mouse Exited");

            }

      

            public void mouseReleased(MouseEvent e) {

                l.setText("Mouse Released");

            }

        });

        setVisible(true);

    }

    public static void main(String[] args) {

       

            new MouseClicks();

            

        }

    }

OUTPUT

BCA and B.Sc Programs - Programming in Java Lab - Bharathiar University - Practical Program 8 - Write a Java Program to create a frame with three text fields for name, age and qualification and a text field for multiple line for address

 

Bharathiar University

Programming Java Lab

Java Program 8

Write a Java Program to create a frame with three text fields for name, age and qualification and a text field for multiple line for address

 

Source Code

import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

public class UserForm {

    public static void main(String[] args) {

        // Create the main frame

        JFrame frame = new JFrame("User Profile Form");

        frame.setSize(320, 500);

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.setLayout(new FlowLayout(FlowLayout.LEFT,20,25));

        // Create labels and text fields

        JLabel nameLabel = new JLabel("Name:");

        JTextField name = new JTextField(20);

        JLabel ageLabel = new JLabel("Age:");

        JTextField age = new JTextField(20);

        JLabel qualificationLabel = new JLabel("Qualification:");

        JTextField qualification = new JTextField(20);

        JLabel addressLabel = new JLabel("Address:");

        JTextArea address = new JTextArea(5, 20);

        // Create a button to trigger the action

        JButton submit = new JButton("Submit");

        // Add components to the frame

        frame.add(nameLabel);

        frame.add(name);

        frame.add(ageLabel);

        frame.add(age);

        frame.add(qualificationLabel);

        frame.add(qualification);

        frame.add(addressLabel);

        frame.add(new JScrollPane(address));

        frame.add(submit);

        // Create ActionListener for the button

        submit.addActionListener(new ActionListener() {

            

            public void actionPerformed(ActionEvent e) {

                

                // Display all values in a dialog box

                String message = "Name: " + name.getText() + "\nAge: " + age.getText() + "\nQualification: " + qualification.getText() + "\nAddress:\n" + address.getText();

                JOptionPane.showMessageDialog(frame, message);

            }

        });

        // Set frame visibility

        frame.setVisible(true);

    }

}

OUTPUT

Dialog box

BCA and B.Sc Programs - Programming in Java Lab - Bharathiar University - Practical Program 7 - Write a Java Program to demonstrate the Multiple Selection List-box

 

Bharathiar University

Programming Java Lab

Java Program 7

Write a Java Program to demonstrate the Multiple Selection List-box 

Source Code

import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

public class MultiSelectionListbox extends JFrame  {

    public JLabel label;

    public JButton submit;

    public JList list1,list2;

    public MultiSelectionListbox()

    {

        setTitle("Multiple Selection ListBox");

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        setSize(500, 500);

        setLayout(new FlowLayout(FlowLayout.LEFT));

        String values[]={"C","C++","Java","Python","R","HTML","XML","CSS","PHP"};

        label = new JLabel("Which Languages do you know?");

        list1 = new JList(values);

        list2 = new JList();

       

        list1.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);

        

        submit = new JButton("Submit");

        submit.addActionListener(new ActionListener() {

           

            public void actionPerformed(ActionEvent e) {

                list2.setListData(list1.getSelectedValues());

            }

        });

        add(label);

        add(new JScrollPane(list1));

        add(list1);

        add(submit);

        add(new JScrollPane(list2));

        add(list2);

        setVisible(true);

    }

    public static void main(String[] args) {

       new MultiSelectionListbox();

}

}

OUTPUT

BCA and B.Sc Programs - Programming in Java Lab - Bharathiar University - Practical Program 6- Write a Java Program to create a frame with four text fields name, street, city and pin code with suitable tables. Also add a button called my details. When the button is clicked its corresponding values are to be appeared in the text fields.

Bharathiar University

Programming Java Lab

Java Program 6

Write a Java Program to create a frame with four text fields name, street, city and pin code with suitable tables. Also add a button called my details. When the button is clicked its corresponding values are to be appeared in the text fields.

Source Code

 import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class MyDetails extends JFrame {
    private JTextField name;
    private JTextField street;
    private JTextField city;
    private JTextField pincode;
    private JButton myDetailsButton;
    private JTable detailsTable;
    public MyDetails() {
        setTitle("My Details");
        setSize(580, 600);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLayout(new FlowLayout());
        // Create components
        name = new JTextField(20);
        street = new JTextField(20);
        city = new JTextField(20);
        pincode = new JTextField(20);
        myDetailsButton = new JButton("My Details");
        // Create table with sample data
        String[] columnNames = {"Name", "Street", "City", "Pincode"};
        String[][] data = {
            {"xxx", "1 Main St", "Chennai", "641801"},
            {"yyy", "4 Raja St", "Coimbatore", "641007"},
            {"zzz", "63 Ram Nagar", "Erode", "638507"}, 
            
            // Add more rows as needed
        };
        
        detailsTable = new JTable(data, columnNames);
        // Add action listener to the button
        myDetailsButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                int selectedRow = detailsTable.getSelectedRow();
                if (selectedRow >= 0) {
                    name.setText((String) detailsTable.getValueAt(selectedRow, 0));
                    street.setText((String) detailsTable.getValueAt(selectedRow, 1));
                    city.setText((String) detailsTable.getValueAt(selectedRow, 2));
                    pincode.setText((String) detailsTable.getValueAt(selectedRow, 3));
                }
            }
        });
add(new JLabel("Name:"));
add(name);
add(new JLabel("Street:"));
add(street);
add(new JLabel("City:"));
add(city);
add(new JLabel("Pincode:"));
add(pincode);
add(myDetailsButton);
add(detailsTable);
add(new JScrollPane(detailsTable));
        setVisible(true);
    }
    public static void main(String[] args) {
        
                new MyDetails();
         
    }
}

OUTPUT

BCA and B.Sc Programs - Programming in Java Lab - Bharathiar University - Practical Program 4- Write a Java Program which open an existing file and append text to that file.

 

Bharathiar University

Programming Java Lab

Java Program 4

Write a Java Program which open an existing file and append text to that file.

Source Code

import java.io.BufferedWriter;

import java.io.FileWriter;

import java.io.IOException;

import java.util.*;

public class AppendFile {

    public static void main(String[] args) {

        String filePath;

        // The text you want to append

        String text;

        

        try {

            Scanner in =new Scanner(System.in);

             // Specify the file path you want to append to

            System.out.println("Enter File Path (use double slash):");

            filePath=in.nextLine();

            // Create a FileWriter in append mode

            FileWriter fw = new FileWriter(filePath, true);

            // Create a BufferedWriter for efficient writing

            BufferedWriter bw = new BufferedWriter(fw);

             // The text you want to append

            System.out.println("Enter text to append the File:");

            text=in.nextLine();

            bw.newLine(); 

            // Append the text to the file

            bw.write(text);

            bw.newLine(); // Add a newline for clarity

            // Close the BufferedWriter to flush and release resources

            bw.close();

            System.out.println("Text appended to the file successfully.");

        } catch (IOException e) {

            System.err.println("An error occurred: " + e.getMessage());

        }

    }

}

OUTPUT

sample.txt file before appending text

sample.txt file after appending text

BCA and B.Sc Programs - Programming in Java Lab - Bharathiar University - Practical Program 4- Write a Java Program to implement the concept of multithreading with the use of any three multiplication tables and assign three different priorities to them.

Bharathiar University

Programming Java Lab

Java Program 4

Write a Java Program to implement the concept of multithreading with the use of any three multiplication tables and assign three different priorities to them.

Source Code

 import java.util.*;

public class MultiThread extends Thread {

    private int tableNumber;

    private int max;

    public MultiThread(int tableNumber, int max) {

        this.tableNumber = tableNumber;

        this.max = max;

    }

   // @Override

    public void run() {

        for (int i = 1; i <= max; i++) {

            System.out.println(tableNumber + " x " + i + " = " + (tableNumber * i));

            try {

                Thread.sleep(1000); // Add a slight delay to better visualize the output

            } catch (InterruptedException e) {

                e.printStackTrace();

            }

        }

    }

    public static void main(String[] args) {

        int limit = 10;

Scanner in =new Scanner(System.in);

System.out.println("Enter three numbers for multiplication tables: ");

int x=in.nextInt();

int y=in.nextInt();

int z=in.nextInt();

        // Create three threads with different priorities

        MultiThread t1 = new MultiThread(x, limit);

        MultiThread t2 = new MultiThread(y, limit);

        MultiThread t3 = new MultiThread(z, limit);

        // Set different priorities to the threads (MIN_PRIORITY = 1, MAX_PRIORITY = 10)

        t1.setPriority(Thread.MIN_PRIORITY);

        t2.setPriority(Thread.NORM_PRIORITY);

        t3.setPriority(Thread.MAX_PRIORITY);

        // Start the threads

        t1.start();

        t2.start();

        t3.start(); 

    }

}

OUTPUT:

BCA and B.Sc Programs - Programming in C Lab - Bharathiar University - Practical Program- C Program to Write a C Program to convert decimal number to binary number

 

BHARATHIAR UNIVERSITY

BCA and B.Sc Programs -  Programming in C Lab - Bharathiar University - Practical Program- 

C Program to Write a C Program to convert decimal number to binary number

Source Code

#include <stdio.h> 

#include <conio.h>

void decimalToBinary(int decimal) 

{ 

int binary[32]; 

int index = 0,i;

while (decimal > 0) 

{ 

binary[index++] = decimal % 2; 

decimal /= 2; 

} 

printf("Binary representation: "); 

for (i = index - 1; i >= 0; i--)

{ 

printf("%d", binary[i]); 

} printf("\n"); 

} 

int main() 

{ 

int decimal;

clrscr();

printf("Enter a decimal number: ");

scanf("%d", &decimal);

decimalToBinary(decimal);

getch();

return 0; 

}

OUTPUT: