Please help! This is java programming. Main topics: Menu driven programming Prog
ID: 3697340 • Letter: P
Question
Please help! This is java programming.
Main topics: Menu driven programming Programmer defined methods, Arrays, Parallel Arrays
Program Specification:
You are someone who has decided that they need to organize their DVD / Movie collection. To do so, you have decided to write a program suited to this task. For each DVD / Movie you will store and maintain its Title, and its running Length (in minutes).
• title (a character string)
• length (a positive Integer)
The program will allow its user to add a DVD / Movie title and its running length and to display the results of various searches, in some reasonable format.
Rules and Requirements:
Each piece of a DVD / Movie’s information must be stored in an appropriately typed array. This means you will have two parallel arrays.
Your DVD / Movie organizer must be able to accommodate up to 128 DVD / Movies.
Your program will work off of a main menu that, repeatedly, allows it user to select from the following options:
1. (Add a DVD / Movie to the DVD / Movie Organizer)
(a) Check if the DVD / Movie Organizer is already full, if so display an appropriate message and stop here.
(b) Prompt for and read a title from the user.
(c) Prompt for and read a length from the user.
(d) Store this information into the appropriate arrays, at the appropriate location.
2. (Title Search the DVD / Movie Organizer)
(a) Prompt for and read a title search string from the user: tSStr.
(b) If tSStr does not end with the character ’*’ then you display to the screen, all of the DVD
/ Movie (titles and lengths) in the Organizer whose title exactly matches the string tSStr.
(c) If tSStr does with the character ’*’ then you display to the screen, all of the DVD / Movie (titles and lengths) in the Organizer whose title exactly matches the string tSStr up to,
but not including the index of the ’*’ in tSStr. Hint: subString()
3. (Length Search the DVD / Movie Organizer)
(a) Prompt for and read a length search string from the user: lSStr.
(b) If lSStr starts with the character ’<’ then you display to the screen, all of the DVD / Movie (titles and lengths) in the Organizer whose length is less than that specified by remaining characters of lSStr. Hint: subString(), ParseInt()
(c) If lSStr starts with the character ’=’ then you display to the screen, all of the DVD / Movie (titles and lengths) in the Organizer whose length is equal to that specified by remaining characters of lSStr. Hint: subString(), ParseInt()
(d) If lSStr starts with the character ’>’ then you display to the screen, all of the DVD / Movie (titles and lengths) in the Organizer whose length is greater than that specified by remaining characters of lSStr. Hint: subString(), ParseInt()
(e) If lSStr does not match one of the above three cases, then an appropriate error message is displayed.
4. (Quit the DVD / Movie Organizer Program)
When and only when selected, your program terminates.
• You must use implement the following method headings (with no modifications) and use each method in your program:
Notes and Hints:
• The effective use of additional methods may help to simplify the understanding as well as implemen- tation of this assignment.
Sample run(s):
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : a
***************************
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : a
***************************
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : a
***************************
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : t
***************************
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : l
***************************
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : l
***************************
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : q
***************************
Explanation / Answer
import java.util.Scanner;
/**
* @author
*
*/
public class MovieCollection {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner stdIn = null;
Scanner stdIn1 = null;
try {
stdIn = new Scanner(System.in);
stdIn1 = new Scanner(System.in);
String titles[] = new String[128];
int lengths[] = new int[128];
int numDVDs = 0;
while (true) {
String choice = menu(stdIn);
if (choice.equalsIgnoreCase("q")) {
break;
} else if (choice.equalsIgnoreCase("a")) {
if (numDVDs == 128) {
System.out
.println("the DVD / Movie Organizer is already full");
} else {
System.out.print("Please enter DVD title :");
String title = stdIn1.nextLine();
System.out.print("Please enter DVD length :");
int length = stdIn.nextInt();
titles[numDVDs] = title;
lengths[numDVDs] = length;
numDVDs++;
}
} else if (choice.equalsIgnoreCase("t")) {
searchByTitle(titles, lengths, numDVDs, stdIn);
} else if (choice.equalsIgnoreCase("l")) {
searchByLength(titles, lengths, numDVDs, stdIn);
} else {
System.out.println("Invalid Choice");
}
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
// diplay menu to the screen
// prompt for and get String responce
// return responce
public static String menu(Scanner stdIn) {
String choice = "";
System.out.println("***************************");
System.out.println(" A Add a DVD *");
System.out.println(" T Search by Title *");
System.out.println(" L Search by Length *");
System.out.println(" Q Quit *");
System.out.println("***************************");
System.out.print(" Please enter an option : ");
choice = stdIn.next();
System.out.println("***************************");
return choice;
}
// prompt for and get a title and a length from user
// add to titles and lengths arrays at index numDVDs
// return numDVDs + 1
public static int addDVD(String[] titles, int[] lengths, int numDVDs,
Scanner stdIn) {
return 0;
}
// prompt for and get title search string from user
// diplay all matching DVD / Movies and their length to the screen
public static void searchByTitle(String titles[], int lengths[],
int numDVDs, Scanner stdIn) {
System.out.print("Please enter DVD title (post * allowed) :");
String tSStr = stdIn.next();
if (!tSStr.contains("*")) {
for (int i = 0; i < numDVDs; i++) {
if (titles[i].equals(tSStr)) {
System.out.println(titles[i] + " " + lengths[i] + " min");
}
}
} else {
tSStr = tSStr.substring(0, tSStr.length() - 1);
for (int i = 0; i < numDVDs; i++) {
boolean flag = titles[i].substring(0, tSStr.length()).equals(
tSStr);
if (flag) {
System.out.println(titles[i] + " " + lengths[i] + " min");
}
}
}
}
// prompt for and get length search string from user
// diplay all matching DVD / Movies and their length to the screen
public static void searchByLength(String[] titles, int[] lengths,
int numDVDs, Scanner stdIn) {
try {
System.out.print("Please enter DVD length (pre < = > manditory) :");
String lSStr = stdIn.next();
char condition = lSStr.charAt(0);
int length = Integer.parseInt(lSStr.substring(1, lSStr.length()));
switch (condition) {
case '<':
for (int i = 0; i < numDVDs; i++) {
if (lengths[i] < length)
System.out.println(titles[i] + " " + lengths[i]
+ " min");
}
break;
case '>':
for (int i = 0; i < numDVDs; i++) {
if (lengths[i] > length)
System.out.println(titles[i] + " " + lengths[i]
+ " min");
}
break;
case '=':
for (int i = 0; i < numDVDs; i++) {
if (lengths[i] == length)
System.out.println(titles[i] + " " + lengths[i]
+ " min");
}
break;
default:
break;
}
} catch (Exception e) {
// TODO: handle exception
System.out.println("Invalid choice");
}
}
}
OUTPUT:
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : a
***************************
Please enter DVD title :The Fly
Please enter DVD length :124
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : a
***************************
Please enter DVD title :The Wizard of Oz
Please enter DVD length :167
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : a
***************************
Please enter DVD title :How to Fly Fish
Please enter DVD length :30
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : t
***************************
Please enter DVD title (post * allowed) :The*
The Fly 124 min
The Wizard of Oz 167 min
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : l
***************************
Please enter DVD length (pre < = > manditory) :<100
How to Fly Fish 30 min
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : =124
***************************
Invalid Choice
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : l
***************************
Please enter DVD length (pre < = > manditory) :=124
The Fly 124 min
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : l
***************************
Please enter DVD length (pre < = > manditory) :>124
The Wizard of Oz 167 min
***************************
A Add a DVD *
T Search by Title *
L Search by Length *
Q Quit *
***************************
Please enter an option : q
***************************
NOTE: I cannot able to add the code to addDVD() method, we cannot return title ,length and numDVDs,
there is conflict in the method signature, please check
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