Java

import org.springframework.beans.factory.annotation.Autowired;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class FavoriteService {
    @Autowired
    private Users users;

    public boolean checkLogin(String username, String password) {
        return users.login(username, password);
    }


    public void addUser(String root, String rootpasswd, String username, String password) {
        if(root.equals("root")&&rootpasswd.equals("rootpasswd")) {
            users.addUser(username, password);
        }
    }

    public User getUser(String username){
        return users.getUser(username);
    }

    public List<String> getFavorites(String username, String password) {
        if (getUser(username) == null) return new ArrayList<>();
    }

    public void addFavorite(String username, String password, String favorite1) {
            users.addFavorite(username,password,favorite1);
    }

    public void removeFavorite(String username, String password, String favorite1) {
        users.removeFavorite(username,password,favorite1);
    }

    public void addFavorite(String username, String password, String favorite1) {

    }
}

import java.util.ArrayList;
import java.util.List;

public class User {
    private final String username;
    private final String password;
    private final List favorites = new ArrayList<String>();

    public User(String username, String password) {
        this.username = username;
        this.password = password;
    }

    public String getPassword() {
        return password;
    }

    public String getUsername() {
        return username;
    }

    public List<String> getFavorites(){
        return favorites;
    }

    public void addFavorite(String favorite){
        favorites.add(favorite);
    }

    public void removeFavorite(String favorite) {
        favorites.remove(favorite);
    }
}

public interface UserDao {
    public void create(User user);

    public User getUser(String username);
}

import java.util.HashMap;
import java.util.Map;

public class UserDaoWithMap implements UserDao {
    private Map<String, User> users;

    public UserDaoWithMap() {
        this.users = new HashMap<>();
    }

    @Override
    public void create(User user) {
        users.put(user.getUsername(), user);
    }

    @Override
    public User getUser(String username) {
        return users.get(username);
    }
}

    public class Users {
    
    @Autowired
    private UserDao userDao;

    public void addUser(String username, String password) {
        User user = new User(username, password);
        userDao.create(user);
    }

    public User getUser(String username){
        return userDao.getUser(username);
    }

    public boolean login(String username, String password) {
        User user = userDao.getUser(username);
        if (user == null) return false;
        if (!user.getPassword().equals(password)) return false;
        return true;
    }

   public void addFavorite(String username, String password, String favorite1) {
        User user = userDao.getUser(username);
        if(login(username,password)){ 
            user.addFavorite(favorite1);
        }
    }

    public void removeFavorite(String username, String password, String favorite1) {
        User user = userDao.getUser(username);
        if(login(username,password)) {
            user.removeFavorite(favorite1);
        }
    }
}

public class Problem_3{
    public static void main(String[] args){
        double[] myList = {1.2,4.7,3.9,4.0};

        //Print all the array elemts
        for (int i = 0; i < myList.length; i++){
            System.out.println(myList[i]+" ");}

            //Square all elements of the array into a new array
            
            for (int i=0; i<myList.length; i++){
              double[] square = myList[i]* myList[i];}

        

        }
    }

import java.io.BufferedWriter;
import java.io.FileWriter;

import javax.swing.JFrame;
import javax.swing.JPanel;

/*******************************************************************************************
Program Name: ClientInformation.java
Programmer's Name: Elizabeth Conklin
Program Description: This program will accept user input and save the input to a file.
*******************************************************************************************/
public class WClientTest {

    public static void main(String[] args) {

        WClient myWClient = new WClient();
        myWClient.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        myWClient.setSize(650, 175);
        myWClient.setTitle("Client Information");
        myWClient.setVisible(true); 
    }
}

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

import java.io.*;
import java.util.ArrayList;
import java.util.StringTokenizer;

public class WClient extends JFrame {

    JLabel labelName;
    JLabel labelID;
    JLabel labelStartingBalance;
    JLabel labelClosingBalance;
    JTextField textName;
    JTextField textID;
    JTextField textStartingBalance;
    JTextField textClosingBalance;
    JButton buttonSave;

    public WClient() {
        setLayout(new GridLayout(0,4));

        labelName = new JLabel("Client Name: ");
        add(labelName);
        textName = new JTextField(10);
        add(textName);
        labelID = new JLabel("Client ID: ");
        add(labelID);
        textID = new JTextField(10);
        add(textID);
        labelStartingBalance = new JLabel("Starting Balance: ");
        add(labelStartingBalance);
        textStartingBalance = new JTextField(10);
        add(textStartingBalance);
        labelClosingBalance = new JLabel("Closing Balance: ");
        add(labelClosingBalance);
        textClosingBalance = new JTextField(10);
        add(textClosingBalance);
        buttonSave = new JButton("SAVE");
        add(buttonSave);

        event e = new event();
        buttonSave.addActionListener(e);}

    public class event implements ActionListener{
        public void actionPerformed(ActionEvent e) {
                try {
                    String name = textName.getText();
                    String ID = textID.getText();
                    String startingBalance = textStartingBalance.getText();
                    String closingBalance = textClosingBalance.getText();

                    textName.setText("");
                    textID.setText("");
                    textStartingBalance.setText("");
                    textClosingBalance.setText("");

                    BufferedWriter outfile = new BufferedWriter(new FileWriter("client.txt", true));

                    outfile.write(name);
                    outfile.write(ID);
                    outfile.write(startingBalance);
                    outfile.write(closingBalance);
                    outfile.close();}
                catch (Exception ex) {
                }
            }
        }{;
    }
}

import java.util.Scanner;

class BubbbleHW {
  public static void main(String []args) {
    int num,
    int i,
    int j,
    int temp;
/*This will no longer be needed    
Scanner input = new Scanner(System.in);


  System.out.println("Enter the number of elements to sort:");
    num = input.nextInt();
This will no longer be needed*/

    int array[] = new int[num];
//Do I change  int array[] = new int [9]

//    System.out.println("Enter " + //num + " elem,ents: ");

    for (i = 0; i < num; i++)
      array[i] = input.nextInt();

    for (i = 0; i < ( num - 1 ); i++) {
      for (j = 0; j < num - i - 1; j++) {
        if (array[j] < array[j+1])
        {
          temp = array[j];
          array[j] = array[j+1];
          array[j+1] = temp;
        }
      }
    }

    System.out.println("Decended order of elemtns");

    for (i = 0; i < num; i++)
      System.out.println(array[i]);
  }
}&lt;/pre&gt;</pre>