2 Create a streaming banner thread that moves a simple messa

2.   Create a streaming banner thread that moves a simple message across a panel. The message should repeatedly enter at the right edge of the panel and exit from the left edge. Design the banner as a subclass of JPanel and have it implement the Runnable interface. That way it can be added to any user interface. One of its constructors should take a String argument that lets the user set the banner’s message.   
3.   Write a client/server network application based on sockets that performs the following tasks:
•   In the client side application, accept a string value representing the basis for a password from the user. The string can contain letters, numbers, and special characters, but no spaces. Verify that the string is at least 6 characters long, contains at least 1 character, 1 number, and 1 special character. Look at the following info on checking for letters, number, and special characters.

Checking Character Properties

•   Send the verified string to the server side application.
•   In the server side application, listen for incoming requests on port 9100. Create a char array using the toCharArray method where each element contains a letter in the original string received from the client. Process the array one element at a time and generate a new password string.Send the new output string to the client side application
o   If the current character is a vowel, generate 2 random consonants and place them in the output string as 1stConsonantCurrentVowel2ndConsonant
o   If the current character is a consonant, place it in the output string followed by a randomly generated vowel and a randomly generated consonant
o   If the current character is a number or special character, place it in the output string without any further processing
o   For all letters in the new output string, randomly vary whether they are upper or lower case
o   Verify that the new output string contains at least 1 upper case character and 1 lower case character. If not, regenerate the output string. For example, an input string of “cat_71” might become ceRNaptoX_71.
•   In the client side application, display the new password to the user

Solution

File: Banner.java

import java.awt.FlowLayout;
import java.awt.LayoutManager;

import javax.swing.JLabel;
import javax.swing.JPanel;

public class Banner extends JPanel implements Runnable{

   private static final long serialVersionUID = -7054224556130637792L;
   private JLabel messageLabel;   //message Label for storing message
   private FlowLayout layout;     //Layout of banner
  
   public Banner(String message){   // constructor with only message as argument
       super();
       messageLabel = new JLabel(message);   //Creating message label with message
       add(messageLabel);                    //Add label to panel
       layout = new FlowLayout(FlowLayout.LEFT, getPreferredSize().width, 0);
       setLayout(layout);      // Set FlowLayout for the panel
       Thread thread = new Thread(this);   //Create a thread
       thread.setDaemon(true);             //Set the thread as daemon thread
       thread.start();                     //Start the thread
   }
  
   public Banner(String message, LayoutManager layoutManager) {   //Constuctor with arguments: message and layout
       super(layoutManager);
       messageLabel = new JLabel(message);           // Creating message label
       add(messageLabel);
       layout = new FlowLayout(FlowLayout.LEFT, getPreferredSize().width, 0);
       setLayout(layout);   //Setting layout for panel
       Thread thread = new Thread(this);   //Creating thread
       thread.setDaemon(true);             //Set thread as daemon thread
       thread.start();                     //Start thread
   }

   @Override
   public void run() {
       int i = 0;
       int messageWidth = messageLabel.getPreferredSize().width;
       while(true){
           int j = getSize().width - i;     //Calculate the value of new horizontal gap between left border of panel and message label
           layout.setHgap(j);               //Set new horizontal gap
           revalidate();                    //Revalidate is required for reflecting the change
           try {
               Thread.sleep(30);            // Time delay
           } catch (InterruptedException e) {
               e.printStackTrace();
           }
           i++;
           if (j <= -1 * messageWidth)    
               i = 0;                        //Reseting value for message to reappear in right
       }      
   }
}