What comments can be added to this code? package attendance; import java.sql.ResultSet; import java.sql.SQLException; import javafx.collections.FXCollections; import javafx.collections.ObservableList; public class RFIDTagsDB { privateSqliteDB db; privatestaticObservableList dbData; publicRFIDTagsDB() throwsClassNotFoundException{ db = new SqliteDB(); dbData = FXCollections.observableArrayList(); } publicObservableListgetDBData(){ return dbData; } publicvoidreadOne(intid) { System.out.println("READ One"); try { this.db.stmt =this.db.conn.createStatement(); System.out.println(db.stmt); String sql ="SELECT * FROM RFIDTags " +"WHERE id = "+ id +""; System.out.println(sql); ResultSet rs =this.db.stmt.executeQuery(sql); while( rs.next() ) { dbData.add( newRFID( rs.getInt("id"), rs.getString("content"), rs.getString("status") ) ); } }catch(Exception e) { System.out.println("Read, Error: "+ e.getMessage()); } } publicvoidread() { System.out.println("READ"); try { this.db.stmt =this.db.conn.createStatement(); System.out.println(db.stmt); String sql ="SELECT * FROM RFIDTags"; System.out.println(sql); ResultSet rs =this.db.stmt.executeQuery(sql); System.out.println(rs); while( rs.next() ) { dbData.add( newRFID( rs.getInt("id"), rs.getString("content"), rs.getString("status") ) ); } }catch(Exception e) { System.out.println("Read, Error: "+ e.getMessage()); } } publicvoidadd(RFIDrfid) throwsSQLException{ try { String sql ="INSERT INTO RFIDTags(content, status) " +"SELECT '"+ rfid.getContent() +"', '"+ rfid.getStatus() +"' " +"WHERE NOT EXISTS(" +"SELECT content " +"FROM RFIDTags " +"WHERE content = '"+ rfid.getContent() +"' " +")"; db.executeQuery(sql); }catch(Exception e) { System.out.println("Add, Error: "+ e.getMessage() ); } } publicvoidmodify(RFIDrfid) { System.out.println(rfid.getId() +" - "+ rfid.getContent() +" - "+ rfid.getStatus() ); try { String sql ="UPDATE RFIDTags " +"SET " +"content = '"+ rfid.getContent() +"', " +"status = '"+ rfid.getStatus() +"' " +"WHERE " +" id = '"+ rfid.getId()+"'"; db.executeQuery(sql); }catch(Exception e) { System.out.println("Modify, Error: "+ e.getMessage()); } } publicvoidremove(RFIDrfid) { try { String sql ="DELETE FROM RFIDTags " +"WHERE id = '"+ rfid.getId() +"'"; db.executeQuery(sql); }catch(Exception e) { System.out.println("Remove, Error: "+ e.getMessage()); } } publicintgetLastInsertedId() throwsSQLException { ResultSet rs = db.stmt.getGeneratedKeys(); if( rs.next() ) { return rs.getInt(1); } return-1; } publicvoidclose() { this.db.closeConnection(); } }

MyFileWriterTest.java   import static org.junit.Assert.assertEquals; import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.util.ArrayList; import org.junit.jupiter.api.BeforeEach; import org.junit.jupiter.api.Test; public class MyFileWriterTest {   MyFileWriter myFileWriter1; MyFileWriter myFileWriter2; MyFileWriter myFileWriter3; MyFileWriter myFileWriter4;   @BeforeEach void setUp() { this.myFileWriter1 =new MyFileWriter("test1_fw.txt"); // file with multiple words per line this.myFileWriter2 =new MyFileWriter("test2_fw.txt"); // similar to info.txt file this.myFileWriter3 =new MyFileWriter("test3_fw.txt"); // similar to info.txt file but with personal info added this.myFileWriter4 =new MyFileWriter("test4_fw.txt"); // similar to info.txt file but with different info and personal info added }   @Test publicvoid testWriteToFile() { ArrayList<String> actualLines = new ArrayList<String>();…

How do I remove the space at the end of the result? Code: import java.util.Scanner; public class FinalExamAnswers{    public static void main(String [] args)    {        manipulateString(); //calls function    }     //your code here    public static void manipulateString()    {        Scanner sc=new Scanner(System.in);  //create Scanner instance                System.out.println("Enter a sentence");        String sentence=sc.nextLine();  //input a sentence                String[] words=sentence.split(" "); //split the sentence at space and store it in array                for(int i=0;i<words.length;i++) //i from 0 to last index        {            if(i%2==0)  //if even index                words[i]=words[i].toUpperCase();    //converted to upper case            else        //if odd index                words[i]=words[i].toLowerCase();    //converted to lower case        }                for(int i=words.length-1;i>=0;i--)  //i from last index to 0        {…

import org.firmata4j.IODevice;import org.firmata4j.Pin;import org.firmata4j.firmata.FirmataDevice;import org.firmata4j.ssd1306.SSD1306;import java.io.IOException;import java.util.HashMap;import java.util.TimerTask;public class minorproj extends TimerTask {static String recLog = "\"/dev/cu.usbserial-0001\"";static IODevice myGroveBoard;private final SSD1306 theOledObject;private Pin MoistureSensor;private Pin WaterPump;private Pin Button;private int sampleCount;public minorproj(SSD1306 theOledObject, Pin Button, Pin MoistureSensor, Pin WaterPump) {this.theOledObject = theOledObject;this.Button = Button;this.MoistureSensor = MoistureSensor;this.WaterPump = WaterPump;this.sampleCount = 0;}double startTime = System.currentTimeMillis();@Overridepublic void run() {while (true) {{// check if button is pressedif (this.Button.getValue() == 1) {break; // exit loop and stop program}String VolValue = String.valueOf(MoistureSensor.getValue());System.out.println("Moisture Sensor Value:" +…

Ask the user for a filename. Display the oldest car for every manufacturer from that file. If two cars have the same year, compare based on the VIN. I am having trouble with my code here is my code import java.util.Comparator;import java.io.File;import java.io.FileNotFoundException;import java.util.ArrayList;import java.util.Collections;import java.util.Scanner;class Car {String manufacturer;String model;int year;String vin;public Car(String manufacturer, String model, int year, String vin) {super();this.manufacturer = manufacturer;this.model = model;this.year = year;this.vin = vin;}public String getManufacturer() {return manufacturer;}public void setManufacturer(String manufacturer) {this.manufacturer = manufacturer;}public String getModel() {return model;}public void setModel(String model) {this.model = model;}public int getYear() {return year;}public void setYear(int year) {this.year = year;}public String getVin() {return vin;}public void setVin(String vin) {this.vin = vin;}}class…

Create an Ordered Doubly Linked List in C++. Remember that an ordered Linked List is one where inserts automatically place a new node so that all the nodes retain a certain order. This list should be templated where items should be in "ascending" order (i.e., if it is a list of numbers, it should be of order of least to greatest).

Explain the functionality of each line of code in the provided C# scripts- using System.Collections;using System.Collections.Generic;using UnityEngine;using UnityEngine.UI; public class Healthbar : MonoBehaviour{    [SerializeField] private Health playerHealth;    [SerializeField] private Image totalHealthbar;    [SerializeField] private Image currentHealthbar;     private void Start()    {        totalHealthbar.fillAmount = playerHealth.currentHealth / 10;    }     private void Update()    {        currentHealthbar.fillAmount = playerHealth.currentHealth / 10;    }} using System.Collections;using System.Collections.Generic;using UnityEngine;using UnityEngine.SceneManagement; public class Health : MonoBehaviour{    [SerializeField] private float startingHealth;    public float currentHealth { get; private set; }    private Animator anim;     private void Awake()    {        currentHealth = startingHealth;        anim = GetComponent<Animator>();    }     public void…

import java.util.Scanner; public class CharMatch {   public static void main(String[] args) {      Scanner scnr = new Scanner(System.in);      String userString;        char charToFind;        int strIndex;       userString = scnr.nextLine();        charToFind = scnr.next().charAt(0);        strIndex = scnr.nextInt();            /* Your code goes here */     }}

Ask the user for a filename. Display the oldest car for every manufacturer from that file. If two cars have the same year, compare based on the VIN. I am having trouble with a specific line of my code here is my code import java.util.Comparator; import java.io.File; import java.io.FileNotFoundException; import java.util.ArrayList; import java.util.Collections; import java.util.Scanner; class Car { String manufacturer; String model; int year; String vin; public Car(String manufacturer, String model, int year, String vin) { super(); this.manufacturer = manufacturer; this.model = model; this.year = year; this.vin = vin; } public String getManufacturer() { return manufacturer; } public void setManufacturer(String manufacturer) { this.manufacturer = manufacturer; } public String getModel() { return model; } public void setModel(String model) { this.model = model; } public int getYear() { return year; } public void setYear(int year) { this.year = year; } public String getVin() { return vin;…

If we want to filter out the results and shows only the values of certain properties, such as Name, Status of Get-Service cmdlet, we can use this cmdlet: Group of answer choices Remove-Item Select-String Select-Object Sort-Object