Re: TreeSet behavior Programming Software Development by solomon_13000 ….add("b"); t1.add("7"); //t2 = (TreeSet)t1.subSet("5", "c"); try{ t1…;7"); System.out.println("T-2"); t2 = (TreeSet)t1.subSet("5", "c"); System.out… TreeSet behavior Programming Software Development by solomon_13000 … main(String[] args){ TreeSet<String> t1 = new TreeSet<String>(); TreeSet<String> t2 = new TreeSet<String>(); t1….add("b"); t1.add("7"); t2 = (TreeSet)t1.subSet("5", "c"); try{ t1… TreeSet - non-static variable friends cannot be referenced from a static context Programming Software Development by ttboy04 …error msg when I complie this program. If I create TreeSet inside the Names method body there is no errors when…someone be kind enough to help me out here. Creating TreeSet must remain as private instance variable. Thanks in advance and… class Test { private Set<String> friends = new TreeSet<String>(); //if I bring this in the body… TreeSet, internal implementation Programming Software Development by Phaelax Does anyone know how the compareTo() in TreeSet is implemented? I needed a sorted list of String elements and was going to use a binary chop method to find if a search key was in the list. Is this how the TreeSet does it already? Reason I'm asking is because speed is very important in this case. TreeSet always finds duplicate Programming Software Development by ceyesuma Hello all. I have the TreeSet Component that won't add any thing uising the add … Treeset recursion methods question Programming Software Development by Syrne … given the task to finish writing the definitions of the Treeset class methods. I'm currently at the [B]headSet[/B… Java TreeSet Assistance Programming Software Development by destined2bbless …; import java.util.Scanner; import java.util.TreeSet; import java.util.Set; public class ProcessPublisher …()); } { Set<String> set = new TreeSet<String>(); //publisherList.add(publisherRecord.getPublisherName()); //StringBuffer … Re: Java TreeSet Assistance Programming Software Development by ~s.o.s~ …I'm very new to Java Steps: [LIST] [*]Declare a TreeSet<String> instance variable for your class [*]Read the… [*]Write a separate method to print the contents of the TreeSet as desired [/LIST] > 5 1/2 weeks not…than enough IMO given that reading the documentation of the TreeSet class and absorbing the examples doesn't take more … Re: Java TreeSet Assistance Programming Software Development by ~s.o.s~ > Using the TreeSet class, how do I accomplish this It's pretty simple; … last entry i.e. the publisher name to a [icode]TreeSet<String>[/icode]. So you'd probably have a… which returns the list of all publisher names in the TreeSet. Of course, to make it more *OO*, you need to… How to store BufferedReader data in a TreeSet? Programming Software Development by sarah.mathieson.7 … any duplicate lines. I think that using a TreeSet would be my best option. Unfortunately I don'… to get my input from the BufferedReader into the TreeSet. This is what I have tried: public static…throws IOException { SortedSet<String> ts = new TreeSet<String>(); //make arrayList of bufferedReader Strings, add… method header for TreeSet Programming Software Development by ttboy04 … answer. Thanks. [CODE]public class Food { private TreeSet<String> myList = new TreeSet<String>(); public Food() { super(); myList… = new TreeSet<String>(); } public String shoppingList(… Re: How to store BufferedReader data in a TreeSet? Programming Software Development by NormR1 > how to get my input from the BufferedReader Look at the BufferedReader class for a method that will return a String when a line is read from the file. Then you can add that String to the TreeSet Re: How to store BufferedReader data in a TreeSet? Programming Software Development by sarah.mathieson.7 I'm pretty sure I want the method readLine(). To add this line to the TreeSet does ts.add(r.readline()) work? Or does this statement not make any sense? Or should it be in several statements? Best Practice for Iterating and Changing Objects in TreeSet Programming Software Development by freedomflyer Hello everyone. I have a TreeSet<State> that I want to iterator over in …order to change the States within the TreeSet (more specifically, a private subclass within each state). However, I… Re: TreeSet behavior Programming Software Development by JamesCherrill Try printing the exception - it's message will help. ps: subSet gives a "live" view, not a copy Re: TreeSet behavior Programming Software Development by JamesCherrill I don't think you read my post properly. 1. Java kindly throws you an Exception which contains a message explaining what and why. You should ALWAYS print the Exception in your catch blocks so you can see that information. It WILL help. 2. I drew your attention to the way that subset works because that's important to understanding this result. I … Re: TreeSet - non-static variable friends cannot be referenced from a static context Programming Software Development by NormR1 The friends variable only exists when there is an instance of the Test class created using new. The Names() method exists outside of any instance of the Test class. Either create an instance of the Test class and use object.variable syntax to access the variable Or remove static from Names() definition Or make friends static. [QUOTE] how I want … Re: TreeSet - non-static variable friends cannot be referenced from a static context Programming Software Development by ttboy04 thanks NormR1 - solved Re: TreeSet always finds duplicate Programming Software Development by AbhikGhosh have you instantiated the Set? if not it will not allow to add. Re: TreeSet always finds duplicate Programming Software Development by ceyesuma [QUOTE=AbhikGhosh;1107917]have you instantiated the Set? if not it will not allow to add.[/QUOTE] Instantiated the set and it works. I am creating tabbed panels from the set. If I close and re run the program how do I have that list to use? Re: TreeSet always finds duplicate Programming Software Development by AbhikGhosh You can put elements into the set and then Serialize it.That way your instance of the set will be saved. You can de-serialize it later and retrieve the instance. Re: TreeSet always finds duplicate Programming Software Development by ceyesuma [QUOTE=AbhikGhosh;1108629]You can put elements into the set and then Serialize it.That way your instance of the set will be saved. You can de-serialize it later and retrieve the instance.[/QUOTE] thanks I will have to look that up. I just learned how to write a file. I thought writing a file would save the set. Do you know how to put a … Re: TreeSet always finds duplicate Programming Software Development by AbhikGhosh Well you may try this: [code] File file = new File("testFile.txt"); try { //create the file file.createNewFile(); //write into file //read from the file } catch(Exception e) { e.printStackTrace(); } [/code] Re: TreeSet always finds duplicate Programming Software Development by AbhikGhosh What do you want to find duplicates in? Re: TreeSet always finds duplicate Programming Software Development by ceyesuma I am going to explore the set serialization to save strings to load in tabs and see if it is good. But, on creating a file. I will also need to be able to create a file that (r,w) and name it a specific name and put it in a specific dir. Is all this possible? Re: TreeSet always finds duplicate Programming Software Development by AbhikGhosh Well I have written a code that creates a file,writes into it and reads from it. Hope this helps you. [CODE] import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; public class… Re: TreeSet always finds duplicate Programming Software Development by ceyesuma [QUOTE=AbhikGhosh;1109128]Well I have written a code that creates a file,writes into it and reads from it. Hope this helps you. [CODE] import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.InputStreamReader; import … Re: TreeSet always finds duplicate Programming Software Development by AbhikGhosh [QUOTE=ceyesuma;1109197] I have to find out how to serialize tab names [/QUOTE] I am not sure exactly what you mean by this.And what functionality do want in classes? Re: TreeSet always finds duplicate Programming Software Development by AbhikGhosh hi ceyesuma if it helped you why dont u mark it as solved? Re: Treeset recursion methods question Programming Software Development by JamesCherrill I can't explain the logic, but the public method is the one that gets called initially (that's why it's public), and the private method is the "helper" (being private it can only be called from within the class). There's no reason why a recursive method can't be void. Recursive just means that the method calls itself. Two method …