I needed help creating some methods, pseudo code will do I just want an Idea of how to approach these

Method Details Markovo The constructor for this class will initialize the HashMap words with the key PUNCTUATION and a value of a new ArrayList. This method will also set prevWord = PUNCTUATION. getWords() This is a getter that returns the list of words addFromFile(String) Others methods called: addLine(String) This method takes a String called filename that represents the file that will be parsed into the words HashMap This method opens the file and calls the addLine method to parse the individual lines from the filename. This method should catch any errors that are generated from file operations. addLine(String) Other methods called: addWord(String) This is a simple method that performs two very important operations. First it ensures that the line being read is not 0 length. This is important because without this functionality an empty string (blank line) will break the program. Once a String is determined to have content, the String is split into individual words. These words are then passed to the addWord(String) method. addWord(String) Other methods called: endsWtihPunctuation (String) This is the method that does most of the processing for this application. The first thing that is done is the previous word is checked to see if it ended with punctuation. If the previous word ended with punctuation then the current word is added under the PUNCTUATION key in the words HashMap. If the previous word did NOT end with punctuation then the HashMap words is checked to see if the previous word has an entry in the HashMap. If the previous word is not present in the HashMap, it will need to be added. Once the previous word is present in the HashMap the current word is added to the ArrayList that uses the previous word as a key. Note: We will use a method called endsWtihPunctuation(String) to check for punctuation. The reason for this is to make debugging easier and because it is used in the next method. getSentence() Other methods called: randomWord(String), endsWtihPunctuation(String) This method is responsible for building a sentence from the contents of the HashMap words. It will make use of the method randomWord(String) described below. This method first pics a random word from the values stored under the key PUNCTUATION. This word becomes the current word. If the current word does not end in punctuation, it is added to the sentence being constructed along with a space and a new random word is selected. If the current word DOES end in punctuation, it is added to the String being constructed and no additional word is chosen The String being built is the returned randomWord(String) This method takes a word as a parameter. That word is used to retrieve an ArrayList of words that follow from the HashMap words. A random word is chosen from the ArrayList and returned. Method Details Markovo The constructor for this class will initialize the HashMap words with the key PUNCTUATION and a value of a new ArrayList. This method will also set prevWord = PUNCTUATION. getWords() This is a getter that returns the list of words addFromFile(String) Others methods called: addLine(String) This method takes a String called filename that represents the file that will be parsed into the words HashMap This method opens the file and calls the addLine method to parse the individual lines from the filename. This method should catch any errors that are generated from file operations. addLine(String) Other methods called: addWord(String) This is a simple method that performs two very important operations. First it ensures that the line being read is not 0 length. This is important because without this functionality an empty string (blank line) will break the program. Once a String is determined to have content, the String is split into individual words. These words are then passed to the addWord(String) method. addWord(String) Other methods called: endsWtihPunctuation (String) This is the method that does most of the processing for this application. The first thing that is done is the previous word is checked to see if it ended with punctuation. If the previous word ended with punctuation then the current word is added under the PUNCTUATION key in the words HashMap. If the previous word did NOT end with punctuation then the HashMap words is checked to see if the previous word has an entry in the HashMap. If the previous word is not present in the HashMap, it will need to be added. Once the previous word is present in the HashMap the current word is added to the ArrayList that uses the previous word as a key. Note: We will use a method called endsWtihPunctuation(String) to check for punctuation. The reason for this is to make debugging easier and because it is used in the next method. getSentence() Other methods called: randomWord(String), endsWtihPunctuation(String) This method is responsible for building a sentence from the contents of the HashMap words. It will make use of the method randomWord(String) described below. This method first pics a random word from the values stored under the key PUNCTUATION. This word becomes the current word. If the current word does not end in punctuation, it is added to the sentence being constructed along with a space and a new random word is selected. If the current word DOES end in punctuation, it is added to the String being constructed and no additional word is chosen The String being built is the returned randomWord(String) This method takes a word as a parameter. That word is used to retrieve an ArrayList of words that follow from the HashMap words. A random word is chosen from the ArrayList and returned