Question

can i get an example of a java code using a class and user defined menthod with everything else listed in the picture

20% Control structures decision: if. else if.... Else switch ... case (optional) repetition (at least 2 iterations) while, do...while for 20% Classes (at least 2 classes) 10% Methods (at least 2 methods) user-defined and/or built-in methods 10% Arrays (at least 1 set of array) 20% User Interface Menu like starting point User friendliness Error free

Answer 1

SOURCE CODE:

*Please follow the comments to better understand the code.

**Please look at the Screenshot below and use this code to copy-paste.

***The code in the below screenshot is neatly indented for better understanding.

This is a very big question.
I have solved all of them.
Please give me an upvote dear, Much Appreciated.!!

MidTermProject.java

import java.util.Scanner;

public class MidtermProject {
    public static void main(String[] args) {
        // declare the scanner to read data from user
        Scanner in = new Scanner(System.in);
        // initialise a new Library
        Library track = new Library();
        // Initialise a media item
        MediaItem obj = new MediaItem();
        int choice = 0;
        // Loop here (WHILE LOOP)
        while (choice != 5){
            // diaplay the menu
            choice = track.displayMenu();
            // SWITCH CASE HERE 
            switch(choice){
                // if the user enters 1
                case 1: System.out.print("What is the title you are entering? ");
                    obj.title = in.nextLine();
                    System.out.print("\n To enter the format correctly; for movies, use DVD, VHS or Blue-Ray. For games, use the platform (Windows, Mac, XBox, etc.) the game runs on.");
                    System.out.print("\nWhat is the format? ");
                    obj.format = in.nextLine();
                    track.addNewItem(obj.title, obj.format);
                    System.out.print("\n");
                    break;
                // if the user enters 2
                case 2: System.out.print("Which title are you loaning? ");
                    obj.title = in.nextLine();
                    System.out.print("Who are you loaning it to? ");
                    obj.loanedTo = in.nextLine();
                    System.out.print("When did you loan the item? ");
                    obj.dateLoaned = in.nextLine();
                    track.markItemOnLoan(obj.title, obj.loanedTo, obj.dateLoaned);
                    break;
                // if the user enters 3
                case 3: track.listAllItems();
                    break;
                // if the user enters 4
                case 4: System.out.println("Which title are you returning? ");
                    obj.title = in.nextLine();
                    track.markItemReturned(obj.title);
                    break;
                // if the user enters 5, quit
                case 5: System.out.println("Goodbye");
                    break;
                default:
                    // if the user enters other than 1 to 5, invalis
                    System.out.println("Invalid option. Please select from 1 - 5.");
                    System.out.println("\n");
            }
        }
        // close the reader
        in.close();
    }

}

========

Library.java

=====\

import java.util.Scanner;
public class Library {
    // fields 
    static Scanner in = new Scanner(System.in);
    MediaItem t = new MediaItem();
    MediaItem[] items = new MediaItem[100];
    String[] str = new String[100];
    int numberOfItems = 0; //fields
    int check = 0;
    int called = 0;
    
    // menu
    int displayMenu(){ //methods
        System.out.println("1. Add new item \n2. Mark an item as on loan \n3. List all items \n4. Mark an item as returned \n5. Quit");
        System.out.print("\nWhat would you like to do? ");
        int a = in.nextInt();
        System.out.println ("\n");
        return a;
    }
    // add an item to library
    void addNewItem(String title, String format){
        MediaItem item = new MediaItem(title, format);
        items[numberOfItems] = item;
        numberOfItems++;
    }

    // mark item on loan
    void markItemOnLoan(String title, String name, String date){
        for(int b = 0; b < numberOfItems; b++){
            if(title.equals(items[b].title)){
                items[b].markOnLoan(name, date);
                called = 1;
            }
        }
        if(called == 0)
            System.out.println(title + " is not part of your existing Library. \n");
        called = 0;
    }
    
    // list all items
    void listAllItems(){
        for(int c = 0; c < numberOfItems; c++){
            if (items[c].onLoan)
                str[c] = "\n" + items[c].title + " " + items[c].format + " loaned to " + items[c].loanedTo + " on " + items[c].dateLoaned;
            else
                str[c] = "\n" + items[c].title + " " + items[c].format;
            System.out.println(str[c] + "\n");
        }
    }
    // mark as returned
    void markItemReturned(String title){
        for(int b = 0; b < numberOfItems; b++){
            if(title.equals(items[b].title)){
                items[b].markReturned();
                check = 1;
            }
        }
        if(check == 0)
            System.out.println("Sorry, I couldn't find " + title + " in the library.");
        check = 0;
    }

}

=========

MediaItem.java

=======

public class MediaItem {
    // fields
    String title;
    String format;
    boolean onLoan;
    String loanedTo;
    String dateLoaned;

    MediaItem(){ //default constructor
        title = null;
        format = null;
        onLoan = false;
        loanedTo = null;
        dateLoaned = null;
    }
    MediaItem(String title, String format){ //constructor
        onLoan = false;
        this.title = title;
        this.format = format;
    }

    //getters and setters are here
    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getFormat() {
        return format;
    }

    public void setFormat(String format) {
        this.format = format;
    }

    public boolean isOnLoan() {
        return onLoan;
    }

    public void setOnLoan(boolean onLoan) {
        this.onLoan = onLoan;
    }

    public String getLoanedTo() {
        return loanedTo;
    }

    public void setLoanedTo(String loanedTo) {
        this.loanedTo = loanedTo;
    }

    public String getDateLoaned() {
        return dateLoaned;
    }

    public void setDateLoaned(String dateLoaned) {
        this.dateLoaned = dateLoaned;
    }

    // mark on loan
    void markOnLoan(String name, String date){ //methods
        if(onLoan)
            System.out.println(this.title + " is already loaned out");
        else {
            onLoan = true;
            loanedTo = name;
            dateLoaned = date;
        }
    }
    // mark returned
    void markReturned(){
        if(!onLoan)
            System.out.println(this.title + " is not currently loaned out");
        onLoan = false;
    }
}

=======

CODE SCREENSHOT:

D Medialtem.javax Midterm Project.java Library.java 1 import java.util.Scanner; 2 3 public class MidtermProject { 4 public static void main(String[] args) { 5 // declare the scanner to read data from user 6 Scanner in = new Scanner(System.in); 7 // initialise a new Library 8 Library track = new Library(); 9 // Initialise a media item 10 MediaItem obj = new MediaItem(); 11 int choice = 0; 12 // Loop here (WHILE LOOP) 13 o while (choice != 5){ 14 // diaplay the menu 15 choice = track.displayMenu(); 16 // SWITCH CASE HERE 17 o switch(choice){ 18 // if the user enters 1 19 case 1: System.out.print("What is the title you are entering? "); 20 obj.title = in.nextLine(); 21 System.out.print("\n To enter the format correctly; for movies, use DVD, VHS or Blue-Ray. For games, 22 "juse the platform (Windows, Mac, XBox, etc.) the game runs on."); 23 System.out.print("\nWhat is the format? "); 24 obj.format = in.nextLine(); 25 track.addNewItem(obj.title, obj.format); 26 System.out.print("\n"); 27 break; 28 // if the user enters 2 29 case 2: System.out.print("Which title are you loaning? "); 30 obj.title = in.nextLine(); 31 System.out.print("Who are you loaning it to? "); 32 obj.loanedTo = in.nextLine(); 33 System.out.print("When did you loan the item? "); 34 obj.dateLoaned = in.nextLine(); 35 track.markItemOnloan Cobi title obi. loanedlo nhi, datel naned):

33 34 35 36 37 38 39 40 41 42 System.out.print("When did you loan the item? "); obj.dateLoaned = in.nextLine(); track.markItemonLoan(obj.title, obj.loanedlo, obj.dateLoaned); break; // if the user enters 3 case 3: track.listallItems(); break; // if the user enters 4 case 4: System.out.println("Which title are you returning? "); obj.title = in.nextLine(); track.markItemReturned(obj.title); break; // if the user enters 5, quit case 5: System.out.println("Goodbye"); break; default: // if the user enters other than 1 to 5, invalis System.out.println("Invalid option. Please select from 1 - 5."); System.out.println("\n"); 43 44 45 46 47 48 49 50 51 52 A } 53 men 54 // close the reader in.close(); 55 56 O لم 57 58 } :: Favorites :: 7: Structure

Medialtem.java Midterm Project.javax Library.java x 1 ol public class MediaItem { 2 // fields 3 String title; String format; 5 boolean onLoan; 6 String loanedTo; 7 String dateLoaned; 8 9 MediaItem(){ //default constructor 10 title = null; 11 format = null; 12 onLoan = false; 13 loanedTo = null; 14 dateloaned = null; 15 16 MediaItem(String title, String format){ //constructor 17 onLoan = false; 18 this.title = title; 19 this.format = format; 20 21 22 //getters and setters are here 23 o public String getTitle() { 24 return title; 25 26 27 public void setTitle(String title) { 28 this.title = title; 29 } نها men لم 30 o public String getFormat() { return format; 31 32 33 34 مها

ها 37 | 38 39 public boolean isOnLoan() { return on Loan; 40 41 O نها 42 43 o public void setOnLoan(boolean onLoan) { this.onLoan = onLoan; 44 لم 45 a 46 47 o public String getLoanedTo() { return loanedTo; 48 49 O malam 50 51 o public void setLoanedTo(String loanedlo) { this. loanedTo = loanedTo; 52 53 malam 54 55 o public String getDateLoaned() { return dateLoaned; 56 57 A men 58 59 o public void setDateLoaned(String dateLoaned) { this.dateLoaned = dateLoaned; 60 61 A mohan 62 63 64 65 66 67 o // mark on loan void markOnLoan(String name, String date){ //methods if(onLoan) System.out.println(this.title + " is already loaned out"); else { onLoan = true; loanedTo = name; dateloaned = date; } 68 69 | 70 71 -

72 A mln 73 74 o 75 // mark returned void markReturned(){ if(!onLoan) System.out.println(this.title + " is not currently loaned out"); onLoan = false; 76 77 78 Q men H. 7: Structure 79 mohan 80

6 © Medialtem.java x C Midterm Project.java x © Library.java 1 import java.util.Scanner; 2 public class Library { 3 // fields 4 static Scanner in = new Scanner(System.in); 5 MediaItem t = new MediaItem(); MediaItem[] items = new MediaItem[100]; 7 String[] str = new String[100]; 8 int numberOfItems = 0; //fields 9 int check = 0; 10 int called = 0; 11 12 // menu 13 int displayMenu(){ //methods 14 System.out.println("1. Add new item \n2. Mark an item as on loan \n3. List all items \n4. Mark an item as returned \n5. Quit"); 15 System.out.print("\nWhat would you like to do? "); 16 int a = in.nextInt(); 17 System.out.println ("\n"); 18 return a; 19 A 20 // add an item to library 21 void addNewItem(String title, String format){ 22 MediaItem item = new MediaItem(title, format); 23 items [numberOfItems] = item; 24 numberofItems++; 25 A 26 27 // mark item on loan 28 o void markItemOnLoan(String title, String name, String date){ 29 o for(int b = 0; b < numberOfItems; b++){ 30 if(title.equals(items[b].title)){ 31 items[b].markOnLoan(name, date); 32 called = 1; 33 A 34 A } mm o لم o ها

34 누 a 35 36 if(called == 0) System.out.println(title + called = 0; " is not part of your existing Library. \n"); 37 38 men 39 40 41 o 42 43 // list all items void listallItems() { for(int c = 0; c < numberOfItems; C++){ if (items[c].onLoan) str[c] = "\n" + items[c].title + " " + items[c].format + else str[c] = "\n" + items[c].title + " " + items[c].format; System.out.println(str[c] + "\n"); 44 " loaned to " + items[c].loanedTo + " on + items[c].dateLoaned; 45 46 47 48 O } 49 A o 50 51 52 53 54 55 56 57 58 } // mark as returned void markItemReturned(String title) { for(int b = 0; b < numberOfItems; b++){ if(title.equals(items[b].title)){ items[b].markReturned(); check = 1; } ها 59 if(check == 0) System.out.println("Sorry, I couldn't find check = 0; + title + " in the library."); 60 61 } 62 63 لم

OUTPUT SCREENSHOT:

1. Add new item 5 2. Mark an item as on loan 3. List all items 4. Mark an item as returned 5. Quit What would you like to do? 3 1. Add new item 2. Mark an item as on loan 3. List all items 4. Mark an item as returned 5. Quit What would you like to do? 1 What is the title you are entering? XYZ To enter the format correctly; for movies, use DVD, VHS or Blue-Ray. For games, use the platform (Windows, Mac, XBox, etc.) the game runs on. What is the format? DVD 1. Add new item 2. Mark an item as on loan 3. List all items 4. Mark an item as returned 5. Quit What would you like to do?

XYZ DVD 1. Add new item 2. Mark an item as on loan 3. List all items 4. Mark an item as returned 5. Quit What would you like to do? 1 What is the title you are entering? ABC To enter the format correctly; for movies, use DVD, VHS or Blue-Ray. For games, use the platform (Windows, Mac, XBox, etc.) the game runs on. What is the format? Mac 1. Add new item 2. Mark an item as on loan 3. List all items 4. Mark an item as returned 5. Quit What would you like to do? 2 Which title are you loaning? PQR Who are you loaning it to? Praveen When did you loan the item? Yesterday PQR is not part of your existing Library.

1. Add new item 2. Mark an item as on loan 3. List all items 4. Mark an item as returned 5. Quit What would you like to do? 2 Which title are you loaning? ABC Who are you loaning it to? Praveen When did you loan the item? Yesterday 1. Add new item 2. Mark an item as on loan 3. List all items 4. Mark an item as returned 5. Quit What would you like to do? 3 XYZ DVD ABC Mac loaned to Praveen on Yesterday 1. Add new item 2. Mark an item as on loan 3. List all items 4. Mark an item as returned 5. Quit

What would you like to do? 4 Which title are you returning? ABC 1. Add new item 2. Mark an item as on loan 3. List all items 4. Mark an item as returned 5. Quit What would you like to do? 3 XYZ DVD ABC Mac 1. Add new item 2. Mark an item as on loan 3. List all items 4. Mark an item as returned 5. Quit What would you like to do? 5 Goodbye Process finished with exit code o

If there are any doubts, comment down here. We are right here to help you. Happy Learning..!! PLEASE give an UPVOTE I Have Put a lot of EFFORT in solving Your Problem. It really Boosts us..!! PLEASE give an UPVOTE I Have Put a lot of EFFORT in solving Your Problem. , It really Boosts us..!!