Create Search Functionality in System Information Prototype

Question

There are similar questions asked on Stack Overflow but I still could not find a solution. I am creating a simple system information prototype for a Library.
How do I make my program have search functionality? The methods in the Library class are supposed to return the list of books that match the given title, publisher or year. Also, the method(s) need to return an arraylist. Here is what I have so far.

public class Book {

private String title;
private String publisher;
private int year;

public Book(String title, String publisher, int year) {
    this.title = title;
    this.publisher = publisher;
    this.year = year;
}

public String title() {
    return this.title;
}

public String publisher() {
    return this.publisher;
}

public int year() {
    return this.year;
}

public String toString() {
    return this.title + ", " + this.publisher + ", " + this.year;
}

}

import java.util.ArrayList;

public class Library {

private ArrayList<Book> list;

public Library() {
    this.list = new ArrayList<Book>();

}

public void addBook(Book newBook) {

    list.add(newBook);

}

public void printBooks() {
    for (Book boo : this.list) {
        System.out.println(boo);
    }
}

public ArrayList<Book> searchByTitle(String title) {
    ArrayList<Book> found = new ArrayList<Book>

    for (Book title : found) {
        if (title.contains(title.title())) {
            return title;
        }
    }
    return found;

}

public ArrayList<Book> searchByPublisher(String publisher) {
    ArrayList<Book> found = new ArrayList<Book> 

    //similar code to the other ArrayList method

    return found;

}

public ArrayList<Book> searchByYear(String year) {
    ArrayList<Book> found = new ArrayList<Book> 

    //similar code to the other ArrayList method

    return found;

}

}

public class Main {
public static void main(String[] args) {
    Library Library = new Library();

Library.addBook(new Book("Cheese Problems Solved", "Woodhead Publishing", 2007));
Library.addBook(new Book("The Stinky Cheese Man and Other Fairly Stupid Tales",     "Penguin Group", 1992));
Library.addBook(new Book("NHL Hockey", "Stanley Kupp", 1952));
Library.addBook(new Book("Battle Axes", "Tom A. Hawk", 1851));

ArrayList<Book> result = Library.searchByTitle("Cheese");
for (Book Book: result) {
System.out.println(Book);
}

System.out.println("---");
for (Book Book: Library.searchByPublisher("Penguin Group  ")) {
System.out.println(Book);
}

System.out.println("---");
for (Book Book: Library.searchByYear(1851)) {
System.out.println(Book);
}
  }
}

score 2 · Accepted Answer · edited May 23 '17 at 10:33

2

You are on the right way. Just add the found book to the result list:

public ArrayList<Book> searchByTitle(String title) {
    ArrayList<Book> found = new ArrayList<Book>();

    for (Book book : found) {
        if (book.title().contains(title)) {
            found.add(book);
        }
    }
    return found;
}

I also corrected some errors you had in that peace of code. Your other code seems to be full of other mistakes, which I won't fix here. You might want to learn a little more about the Java syntax.

EDIT

As MrWiggles pointed out you might want to have a case insensitive search. See How to check if a String contains another String in a case insensitive manner in Java? for that.

edited May 23 '17 at 10:33

Community

1
1

answered Jan 14 '15 at 16:37

André Stannek

7,773
31
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1

At the very least I would make this search case insensitive – tddmonkey Jan 14 '15 at 16:43
Thank-you, you were right I was close. I went through and corrected my other syntax errors. – Noah Kettler Jan 14 '15 at 16:47
MrWiggles That was going to be my next step. Any tips on the easiest way to make it case insensitive? – Noah Kettler Jan 14 '15 at 16:48

Create Search Functionality in System Information Prototype

1 Answers1