A simple example using the twitter API and a simple Markov generator to create a simple Trump bot

GetTimeline.java

package twittergen;

import twitter4j.Status;
import twitter4j.Twitter;
import twitter4j.TwitterException;
import twitter4j.TwitterFactory;

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.Random;

import textgen.MarkovTextGeneratorLoL;

public class GetTimeline {
	
	private String user;
	private List<String> statusTexts;
	private MarkovTextGeneratorLoL textGen;
	
	public final static String URL_REGEX = "https?://\\S+\\s?";
	
	public GetTimeline(String uid){
		this.user = uid;
		
		 Twitter twitter = new TwitterFactory().getInstance();
	     statusTexts = new LinkedList<String>();
	     textGen = new MarkovTextGeneratorLoL(new Random());
	        
	        try {
	            
	        	List<Status> statuses;

	            statuses = twitter.getUserTimeline(user);
	            System.out.println("Showing @" + user + "'s user timeline.");
	            
	            for (Status status : statuses) {
	                System.out.println("@" + status.getUser().getScreenName() + " - " + status.getText());
	                statusTexts.add(status.getText());
	            }
	            
	            
	        } catch (TwitterException te) {
	            System.out.println("Failed to get timeline for @" + user + " : " + te.getMessage());
	        }
	}
	
	public List<String> getStatuses(){
		return new ArrayList<String>(statusTexts);
	}
	
	public String generateText(){
		
		StringBuilder trainer = new StringBuilder();
		for(String status : statusTexts){
			trainer.append(status);
		}
		String trainText = trainer.toString().replaceAll(URL_REGEX, "");
		textGen.train(trainText);
		
		String s = "";
		try {
            s = textGen.generateText(20);
        } catch (Exception e) {
            System.out.println("Error thrown. " + e.getMessage());
        }
		
		return s;
	}
	
	
	public static void main(String[] args) {
		
		String userID = "realDonaldTrump";
		GetTimeline trump = new GetTimeline(userID);
		List<String> trumpisms = trump.getStatuses();
		System.out.println();
		System.out.println("The following shit has been said by trump in the past few days: ");
		
		for(String trumpSaid : trumpisms){
			// take out the urls from the donald
			// comment this out if you want the donald's links
			String urlregex = GetTimeline.URL_REGEX;
			trumpSaid = trumpSaid.replaceAll(urlregex, "");
			System.out.println(trumpSaid);
		}
		
		System.out.println();
		System.out.println("What will Trump say next...");
		System.out.println(trump.generateText());

    }

}