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Hashmap, ArrayList and Comparator 13 Years Ago by NewOrder …class: [CODE]class Facebookfriends{ Facebookfriends info; String name; int age; Facebookfriends next; public Facebookfriends(String studentName,int age)…; this.age = age; } public int compareTo(Facebookfriends another) { return this.name.compareTo(another.name); } } … Re: Hashmap, ArrayList and Comparator 13 Years Ago by NormR1 [QUOTE] it doesnt work well.[/QUOTE] Please explain what happens. For debugging: print out the String being searched for with delimiters to verify the computer is using what you expect. What is the relationship between studentName and book.studentName? [QUOTE]i have a comparator function.. in the class:[/QUOTE] Can you explain what a "… Re: Hashmap, ArrayList and Comparator 13 Years Ago by NewOrder [CODE] class Student{ String studentName; String studentSurname; String studentSubject; int daysBookBorrowed; String booksName; @Override public String toString() { return "Student [booksName=" + booksName + ", daysBookBorrowed=" + daysBookBorrowed + ", studentName=" … Re: Hashmap, ArrayList and Comparator 13 Years Ago by NormR1 Did you read and understand my previous post? Let me repeat it in case you didn't read it: For debugging: print out the String being searched for with delimiters to verify the computer is using what you expect. What is the relationship between studentName and book.studentName? Re: Hashmap, ArrayList and Comparator 13 Years Ago by NewOrder [CODE] import java.io.*; import java.util.HashMap; public class StudentSearchSystem{ public static void main(String[] args){ Console console=System.console(); String studentName = null; String studentSurname = null; String studentSubject = null; int daysBookBorrowed = 0; String booksName = null;… Re: Hashmap, ArrayList and Comparator 13 Years Ago by NormR1 Did you read and understand my previous post? Where is the debug code? What is the relationship between studentName and book.studentName? Re: Hashmap, ArrayList and Comparator 13 Years Ago by NormR1 Did you read and understand my previous post? Where is the debug code? What is the relationship between studentName and book.studentName? Re: Hashmap, ArrayList and Comparator 13 Years Ago by NewOrder lol StudentName is th input the user types in. book.studentName... is a reference to the student class my question was concertning this line alone: [CODE]if(dic.containsKey(book.studentName)){// [/CODE] i think think that i need to re-write it in a different way.. may be add nother Arraylist<> and use its methods to extract the … Re: Hashmap, ArrayList and Comparator 13 Years Ago by NormR1 Still don't see any debug code. I guess you'll keep changing the code until it works. Good luck with your project. Re: Hashmap, ArrayList and Comparator 13 Years Ago by NewOrder Norm i could debug the whole thing using eclipse. my question was,, can you search a string inside an object which holds string dic.containskey(person.name); i think i need to change [CODE] HashMap<String, Object> dic=new HashMap<String, Object>();[/CODE] i think i need to change Object to ArrayList<object>// … Re: Hashmap, ArrayList and Comparator 13 Years Ago by JamesCherrill Hello again NewOrder. It looks like you just drove Norm away again. I've had a chance to re-charge my batteries, so I'll give this a quick try. 1. Going to "ArrayList<object>" won't help. 2. Do you just want to search on the student's name? If so, this is the key in the HashMap, so you can use containsKey. The problem with …