@SuppressWarnings("unchecked")
class MyBooks implements Comparable{
static final CompareLastName c1 = new CompareLastName();
static final CompareFirstName c2 = new CompareFirstName();
static final CompareTitle c3 = new CompareTitle();
static final ComparePrice c4 = new ComparePrice();
static final CompareISBN c5 = new CompareISBN();
static final CompareDate c6 = new CompareDate();
private String lastname, firstname, title, price, isbn, date;
public MyBooks(String ln, String fn, String te, String pe, String in, String de) {
lastname = ln;
firstname = fn;
title = te;
price = pe;
isbn = in;
date = de;
}// end MyBooks constructor
public int compareTo (MyBooks b1, MyBooks b2) {
return 1;
} // end method compareTo required by Comparable interface
public String toString () {
return "\t" + lastname + "\t" + firstname + "\t" + title + "\t" + price + "\t" + isbn + "\t" + date;
} // end method toString
static class CompareLastName implements Comparator <MyBooks>{
public int compare (MyBooks b1, MyBooks b2) {
if((b1.lastname).compareTo(b2.lastname) > 0)
return 1;
else
return 0;
} // end compare
} // end CompareLastName[ICODE][/ICODE] class
static class CompareFirstName implements Comparator <MyBooks>{
public int compare (MyBooks b1, MyBooks b2) {
if((b1.firstname).compareTo(b2.firstname) > 0)
return 1;
else
return 0;
} // end compare
} // end CompareFirstName class
static class CompareTitle implements Comparator <MyBooks>{
public int compare (MyBooks b1, MyBooks b2) {
if(b1.title.compareTo(b2.title) > 0)
return 1;
else
return 0;
} // end compare
} // end CompareTitle class
static class ComparePrice implements Comparator <MyBooks>{
public int compare (MyBooks b1, MyBooks b2) {
if(b1.price.compareTo(b2.price) > 0)
return 1;
else
return 0;
} // end compare
} // end ComparePrice class
static class CompareISBN implements Comparator <MyBooks>{
public int compare (MyBooks b1, MyBooks b2) {
if(b1.isbn.compareTo(b2.isbn) > 0)
return 1;
else
return 0;
} // end compare
} // end CompareISBN class
static class CompareDate implements Comparator <MyBooks>{
public int compare (MyBooks b1, MyBooks b2) {
if(b1.isbn.compareTo(b2.isbn) > 0)
return 1;
else
return 0;
} // end compare
} // end CompareDate class
}//end MyBooks class
cool_whip579 0 Newbie Poster
masijade 1,351 Industrious Poster Team Colleague Featured Poster
Need Help with Comparable/Comparator.
Good for you. I, however, have no idea what that needed help might be, since you didn't say/ask.
cool_whip579 0 Newbie Poster
Oh sorry, just have a problem with the following line and can't seem to figure out:
"class MyBooks implements Comparable{"
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