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Using Java
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- Develop a single program using any programming language (e.g. Java, Python, C++, etc.) that:a. Encrypts and decrypts a message using the Cesar’s Cipher. The user encryptingthe message is prompted to enter a message and then a key that indicates the displacement.The user decrypting the message is prompted to enter the encrypted message and the key.b. Decrypts and displays all (26) possible solutions.Write a Java program for key store to store, read and delete the keys. (Secret key, private key, public key and certificates). The key store has one password and each individual key entry has one password.Many user-created passwords are simple and easy to guess. Write a program that takes a simple password and makes it stronger by replacing characters using the key below, and by appending "!" to the end of the input string. i becomes 1 a becomes @ m becomes M B becomes 8 s becomes $ Ex: If the input is: mypassword the output is: Myp@$$word! word = input()password = '' ''' Type your code here. ''' python
- Use java program to write a method for having a user enter a passwordMany user-created passwords are simple and easy to guess. Write a program that takes a simple password and makes it stronger by replacing characters using the key below, and by appending "!" to the end of the input string. i becomes 1 a becomes @ m becomes M B becomes 8 s becomes $ Ex: If the input is: mypassword the output is: Myp@$$word! word = input()password = '' ''' Type your code here. '''a. Write Java classMessage that automatically gives each created Message object a unique serial number, starting at 1 for the first message. (Hint: static) b) Write statements that create three Message objects. Show and explain serial numbers for these objects.
- Many user-created passwords are simple and easy to guess. Write a program that takes a simple password and makes it stronger by replacing characters using the key below, and by appending "q*s" to the end of the input string. i becomes ! a becomes @ m becomes M B becomes 8 o becomes . Ex: If the input is: mypassword the output is: Myp@ssw.rdq*s How do I write this in C++Java Programming (no copy-pastes, please) In Java, write two applications, a client and a server that communicate with each other according to the protocol: The connection is only maintained (authenticated) if the first thing the client sends is the message “OOP”; After the first authentication, the server will receive messages typed in by the client until he sends an “End” message; the server will just write the received messages on the screen; When the server receives the “End” message, it will start sending typed messages to the client, who will receive them and write them to the screen until an “End” message is sent to the client.Using the Java programming language write a program that takes an email address as an input from the keyboard and, using a loop, steps through every character looking for an @ sign. If the email address has exactly one @ character, then print a message that the email address is valid; otherwise, print a message that it is invalid.
- PYTHON!!! Write a script that inputs a line of encrypted text and a distance value and outputs plaintext using a Caesar cipher. The script should work for any printable characters. An example of the program input and output is shown below: Enter the coded text: Lipps${svph% Enter the distance value: 4 Hello world! Program produces correct output given input Input: Jhss'tl'Pzothls5 7 Output: Enter a message: Jhss'tl'Pzothls5 Enter the distance value: 7 Qozz.{s.Wv{osz< Results: Call me Ishmael. Input: Zu&hk2&ux&tuz&zu&hk 6 Output: Enter a message: Zu&hk2&ux&tuz&zu&hk Enter the distance value: 6 `{,nq8,{~,z{,{,nq Results: To be, or not to be Input: Khoor#zruog$ 3 Output: Enter a message: Khoor#zruog$ Enter the distance value: 3 Nkrru&}uxrj' Results: Hello world!USING JAVA: Implement a simple e-mail messaging system. A message has a recipient, a sender, and a message text. A mailbox can store messages. Supply a number of mailboxes for different users and a user interface for the user to login, send messages to other users, read their own messages, and log out.Write a python program that scans in a large number of tweets from a file, and prints the top 5 hashtags. Approach Parse each word in the file Find a way to isolate the hashtags from the rest of the tweet Compute the frequency of each unique hashtag. Find the top 5 hashtags. Caveats 1. Because this is public dataset, there are many tweets that use special characters that may cause issues during reading in your file. To avoid this, explicitly specify the encoding mode in open when reading in the file. with open('twitter_data.txt', 'r', encoding='utf8') as f: 2. When parsing hashtags be sure to change everything to lowercase. There are cases in the file where two hashtags are the same but differ in case. 3. There is no standard way of sorting a dictionary based on the values. Python gives you access to a sorted function where you can pass in a collection and also specify a comparator which outlines how you want to sort the values. This can be done with a one line lambda function.