Which XXX determines the event source for the stateChanged()method?eOverridepublic void stateChanged (ChangeEvent event) {int val;String strval;XXXif (source== dollarslider) {val = dollarslider.getValue();strval = Integer.tostring(val);dollarField.setText (strVal);else if (source == centSlider) {val = centslider.getValue();strVal = Integer.toString(val);centField.setText(strVal);%3D}JSlider source = event.getSource(JSlider);JSlider source = new event.getSource();O JSlider source = (JSlider) event.getSource();JSlider source = JSlider.getSource();

Answered: Image /qna-images/answer/ace40df2-a541-4039-83c8-35de15dd5f4f.jpg

Answered: (source dollars wal - dollarSlider…

(source dollars wal - dollarSlider strVal = Integer.t dollarField.setTex e if (source - ce wal - centslider.g strVal - Integer.t: centField.setText(

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question 1 package chapter07;  public class BSTNode {    private int info;    private BSTNode left;    private BSTNode right;     public BSTNode(int info)    {  this.info = info;  this.left = null;  this.right = null;    }     public void setInfo(int info)    {  this.info = info;    }     public int getInfo()    {  return this.info;    }     public void setRight(BSTNode right)    {  this.right = right;    }     public BSTNode getRight()    {  return this.right;    }  public void setLeft(BSTNode left)    {  this.left = left;    }     public BSTNode getLeft()    {  return this.left;    } } package chapter07;  public class BinarySearchTree {    protected BSTNode root;    protected boolean success;     public BinarySearchTree()    {  this.root = null;    }        public boolean contains(int value)    {  BSTNode curr = root;   while(curr != null)  {    if(value == curr.getInfo())    {  return true;…
package chapter07;  public class BSTNode {    private int info;    private BSTNode left;    private BSTNode right;     public BSTNode(int info)    {  this.info = info;  this.left = null;  this.right = null;    }     public void setInfo(int info)    {  this.info = info;    }     public int getInfo()    {  return this.info;    }     public void setRight(BSTNode right)    {  this.right = right;    }     public BSTNode getRight()    {  return this.right;    }  public void setLeft(BSTNode left)    {  this.left = left;    }     public BSTNode getLeft()    {  return this.left;    } } package chapter07;  public class BinarySearchTree {    protected BSTNode root;    protected boolean success;     public BinarySearchTree()    {  this.root = null;    }        public boolean contains(int value)    {  BSTNode curr = root;   while(curr != null)  {    if(value == curr.getInfo())    {  return true;    }…
READ QUESTION CORRECTLY package chapter07;  public class BSTNode {    private int info;    private BSTNode left;    private BSTNode right;     public BSTNode(int info)    {  this.info = info;  this.left = null;  this.right = null;    }     public void setInfo(int info)    {  this.info = info;    }     public int getInfo()    {  return this.info;    }     public void setRight(BSTNode right)    {  this.right = right;    }     public BSTNode getRight()    {  return this.right;    }  public void setLeft(BSTNode left)    {  this.left = left;    }     public BSTNode getLeft()    {  return this.left;    } } package chapter07;  public class BinarySearchTree {    protected BSTNode root;    protected boolean success;     public BinarySearchTree()    {  this.root = null;    }        public boolean contains(int value)    {  BSTNode curr = root;   while(curr != null)  {    if(value == curr.getInfo())    {…
public class DesertEvent { private static int eventCount = 0; private String barCode; private String location; private String eventName; private String eventType; private int quantity; private int capacity; private int seatsTaken; public DesertEvent(String eventName, String eventType) { this(eventName, eventType, 0); calcMaximumSeats(eventType); generateBarCode(); } public DesertEvent(String eventName, String eventType, int capacity) { this.eventName = eventName; this.eventType = eventType; this.capacity = capacity; generateBarCode(); eventCount++; } public String getBarCode() { return barCode; } public String getLocation() { return location; } public String getEventName() { return eventName; } public String getEventType() { return eventType; } public int getQuantity() { return quantity; } public void setQuantity(int quantity) { this.quantity = quantity; } public int getCapacity() { return capacity; } public void setCapacity(int capacity) { this.capacity = capacity;…
public class DesertEvent { private static int eventCount = 0; private String barCode; private String location; private String eventName; private String eventType; private int quantity; private int capacity; private int seatsTaken; public DesertEvent(String eventName, String eventType) { this(eventName, eventType, 0); calcMaximumSeats(eventType); generateBarCode(); } public DesertEvent(String eventName, String eventType, int capacity) { this.eventName = eventName; this.eventType = eventType; this.capacity = capacity; generateBarCode(); eventCount++; } public String getBarCode() { return barCode; } public String getLocation() { return location; } public String getEventName() { return eventName; } public String getEventType() { return eventType; } public int getQuantity() { return quantity; } public void setQuantity(int quantity) { this.quantity = quantity; } public int getCapacity() { return capacity; } public void setCapacity(int capacity) { this.capacity = capacity;…
package Linkedqueue; public class LLNode<T>{private LLNode<T> link;private T info;public LLNode(T info){this.info = info;link = null;}public void setInfo(T info)// Sets info of this LLNode.{this.info = info;} public T getInfo()// Returns info of this LLONode.{return info;}public void setLink(LLNode<T> link)// Sets link of this LLNode.{this.link = link;} public LLNode<T> getLink()// Returns link of this LLNode.{return link;}}
Objective: Write a class that will test dates and times inputted by the user and determine whether or not it is valid. This will focus on the usages of methods to organize code. First download the driver and put it in your project DO NOT ALTER THE DRIVER! Use this to run your project The driver : public class DateAndTimeDriver { public static void main(String[] args) { // TODO Auto-generated method stub DateAndTimeTester dtTester = new DateAndTimeTester(); dtTester.run(); } } Write a class file called DateAndTimeTester This DOES NOT have a main method Create the following methods run: This method returns nothing and takes no parameters. This is called by the driver and should handle all of the input from the Scanner and dialog for the user. isValid: returns true or false if a given String has the correct date and time. The String parameter should be formatted “MM/DD hh:mm” This method should call the methods isValidDate and isValidTime to determine this. isValidDate: returns…
InheritanceDemo.java: // StudentName Today's Date public class InheritanceDemo { public static void main(String[] args) { KleenexBox kb1 = new KleenexBox(); KleenexBox kb2 = new KleenexBox(100); Box justABox = new Box(); System.out.println("justABox has area " + BoxArea(justABox)); System.out.println("kb1 has area " + BoxArea(kb1)); System.out.println("kb2 has this many square inches of tissue: " + KleenexArea(kb2)); } public static double BoxArea (Box b) { return b.width * b.length; } public static double KleenexArea (KleenexBox a) { return a.width * a.length * a.numTissues; } } Box.java: // Student Name Today's Date public class Box { public double width; public double length; public String label; } KleenexBox.java: // Student's Name Today's Date public class KleenexBox extends Box { public int numTissues; // A new Kleenex box public KleenexBox() { numTissues = 50; length = 8.0; width = 5.0; } // A new Kleenex box with a specific number of tissues public…
InheritanceDemo.java: // StudentName Today's Date public class InheritanceDemo { public static void main(String[] args) { KleenexBox kb1 = new KleenexBox(); KleenexBox kb2 = new KleenexBox(100); Box justABox = new Box(); System.out.println("justABox has area " + BoxArea(justABox)); System.out.println("kb1 has area " + BoxArea(kb1)); System.out.println("kb2 has this many square inches of tissue: " + KleenexArea(kb2)); } public static double BoxArea (Box b) { return b.width * b.length; } public static double KleenexArea (KleenexBox a) { return a.width * a.length * a.numTissues; } } Box.java: // Student Name Today's Date public class Box { public double width; public double length; public String label; } KleenexBox.java: // Student's Name Today's Date public class KleenexBox extends Box { public int numTissues; // A new Kleenex box public KleenexBox() { numTissues = 50; length = 8.0; width = 5.0; } // A new Kleenex box with a specific number of tissues public…
public class DLList { public DLLNode front; public DLLNode back; public DLList(String name) { this.front = new DLLNode(); this.front.name = name; this.front.nextnode = null; this.front.prevnode = null; this.back = front; } public void addNode(DLLNode newNode) { newNode.nextnode = this.front; this.front.prevnode = newNode; this.front = newNode; } public void reverseListv1() { DLLNode current = this.back; //set iterator to the back node DLLNode prevBuffer = this.back.nextnode; //record (old) nextnode DLLNode prev; this.front = this.back; // set the list's "back" as the "front" while (current != null) { current.nextnode = current.prevnode; // set current node's nextnode as its previous prev = current; //record last node processed current = current.prevnode; //move iterator prev.prevnode = prevBuffer; //set last processed node's prevnode to its (old) nextnode prevBuffer = current; //record last processed node's (old) nextnode this.back = prev; // set the list's "back" point to…
Implement the following class. Refer to the below notes for more details. SimCard phoneNumber: String internationalService: boolean minutes: int // default 0 costPerMinute: double + SimCard ( ) + SimCard ( newPhoneNumber: String, newInternationalService: boolean ) + getters and setters of phoneNumber, internationalService and costPerMinute + callLocal (duration: int): void + callInternational(duration: int): boolean + bill(): double o phoneNumber: private String representing the phone number. Default is "00-000000" o internationalService : private boolean indicating whether international calls are allowed or not. Default is false. o minutes: private int representing the number of minutes to be invoiced (added to the bill). Default is 0. o costPerMinute: private double representing the cost of 1 minute. This value should be positive. Default value is 0.2. Assume all the sim card has the same cost rate per minute. LS) The no-arg constructor that will create a new SimCard with the default…
Modify the NumbersDemo application whose main() method holds two integer variables. Assign values to the variables. In turn, pass each value to methods named displayTwiceTheNumber(), displayNumberPlusFive(), and displayNumberSquared(). public class NumbersDemo { public static void main (String args[]) { // Write your code here } public static void displayTwiceTheNumber(int n) { // Write your code here } public static void displayNumberPlusFive(int n) { // Write your code here } public static void displayNumberSquared(int n) { // Write your code here } }