I just posted the following question but i made a mistake. What i want is not how to use Eclipse but how to build the tree-like structure. An element can have ... |
How would one test whether data structure built properly? I'm implementing kind of modified radix tree, and been wondering how do you check if your data structure builds up correctly.
Consider a ... |
I've got two classes; one interprets commands, and sends these commands to another class which executes them. I then want the class which executes the commands to be able to ... |
I am planning to implement a tree structure where every node has two children and a parent along with various other node properties (and I'd want to do this in Java ... |
I am looking for a validator to validate tree structure based configuration files.
e.g.
a.student.name joe
a.student.class arts
Can you suggest any ideas on validating such config. So far I have searched ... |
when we do node.getChildCount() , where node is the one of tree node ,in that case the method will only return the child count , but it will not consider the ... |
I have list of objects type Node (items). And Node class has children in it (childItems). I Want to print this structure in ol li html markup.
Preparing in a recursive ... |
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Im trying to fill up a tree with the entries from a text file and I can read the file and I know how to make a tree object. I just ... |
Please tell me how you create a tree structure in Smooks?
I try bind this xml with a NodeBean class:
<?xml version="1.0" encoding="UTF-8"?>
<node>
<name>root</name>
<node>
...
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I want to create that auto-complete search dropdown list in the below page and pop up search results in a tree view same as shown in the below page. Just open ... |
My brain has stopped working. If anyone out there can think of a good way to solve this problem, or just possibly give a few ideas to get my brain working again it would be massively helpful. I have a flat array of DTOs, populated from a ResultSet kind of like this: id name parent_id ---------------------------- 1 group1 null 2 group2 ... |
I am trying to figure out a way to check whether two multiway trees are identical or not in java. When i say identical, i mean whether two trees have the same physical layout ( given that rearranging the nodes is allowed ).. For instance |-- B A-- | |-- D is identical to |-- C-- | |-- E |-- D ... |
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TreeMap and TreeSet are implementations of a Map and a Set (respectively) using a tree as the underlying implementation, that's all. They are not usable as tree data structures. Maybe say a bit more about what you are trying to accomplish, and we can suggest some data structures and algorithms to use. Geoffrey |
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We always ask how far you've gotten and where you are stuck. Do you know how you want to make a tree in memory? Look in the JavaDoc for TreeNode and see if that gives you some ideas. How is the tree stored in the database? That will make a lot of difference when it comes time to load it. |
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Hi, I am writing a program to convert the SOAP message to a tree structure. The tree that I am going to create should be a N-Ary tree. I have created a class like the below one which is a data structure that acts as a node.Each element in the SOAP message is taken as an object.Complex elements( one object ) ... |
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If you need code for the tree structure itself you can check out DefaultMutableTreeNode. As for the tables, you will need just one. It needs one column with the key to the parent node. This key will be null for the root node(s). If I have such a table and need to convert it into a tree I usually loop twice: ... |
Hi I have a list of objects type Node (items). And Node class has children in it (childItems). I Want to print this structure in ol li html markup. Preparing in a recursive method. But there is some issue in my logic. Have a look on my code. The the size of the items will be 2. According to given sample ... |
Hi Is there a standard tree structure in Java? ( I just want to have to reinvent the wheel) I am looking for an utility that can make trees with more than two childeren per node. and is able to all kinds of things with it like. add leaf, remove leaf list childeren move childeren up/down in the childerens list sort ... |
Hi... Can ne one help m dis in dis.... i hav a text file which contains 3 to 4 lines lik a: abc;bcd;def b: def;xyz i hav to write a prog in which i hav to tak te text present in "a" (only abc,bcd.. by separeting comas) and display it in "a" group present in tree structure n similary b. Thanks ... |
TreeSet is not really useful to me because I want to store duplicated elements and TreeMap works with keys, which is not what I am looking for. First, I want to create a customized tree (choosing the number of nodes for each level, add/delete nodes...) applying a prune criteria to delete branches so my algorithm can work faster with the content ... |
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Hi, I have a problem which I'm findly rather complicated to solve. I want to create a tree-like structure in java where there is the Tree class. This class holds Category classes. Each of which hold SubCategory classes, which in turn can hold SubCategory classes. Do I have to work root upwards? For example is it possible to create a class ... |
Hi guys Not used Java in a while (or done much programming in a while to be honest) and i've been set the task of reading an XML document into a tree structure but without using any existing XML libraries. I'm a little bit stumped which line to go down and wondered if anyone had could help me out with a ... |
Hi there, I am in a datastructures class and we're supposed to create classes to represent an XML hierarchy in java. There is a base class that is inherited by the different node types (Document, Element, Text). Unfortunately I am running into an issue of keeping track of the parent nodes. Normally I would just create a method called setParent(Node parentNode) ... |
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1> How should i implement a "Tree Structure" in Java Based application.?How would i map the entries to the database table?how many tables will i require for this implementation.? List records = new ArrayList(); records.add("null"); records.add("Product"); records.add("Category"); records.add("P1"); records.add("P2"); records.add("P3"); records.add("C1"); records.add("C2"); records.add("C3"); so how should i implement a Tree Structure for the above record set. //P1,P2,P3 belong to Parent {Product} ... |
It's not clear what you're trying to accomplish, but I'm going to guess that maybe you want something like coroutines. Maybe someone has come up with a way to do something coroutine-like in Java, which (unless something very major has happened lately without telling me) doesn't have native support for coroutines. Why do you want to do this? Why not just ... |
/** * Branching node constructor. * Allows the left and right branches to be provided and sets * the value to 0 just in case someone attempts to access it. * * @param l a reference to the node on the left branch. * @param r a reference to the node on the right branch. */ |
"Java" can be termed the "Java Language". The language does not have trees. In more general usage "Java" can refer to a standard, desktop, delivered VM which includes the standard Java API. The types that you are asking about would be found in the following package. [http://java.sun.com/javase/6/docs/api/java/util/package-summary.html] "Java" could also refer to any other commonly available implementations. In that case probably ... |
Hello Guys, I am stuck in my project for a while and decided to contact you guys for ideas because am short of ideas how to get it done. This is the task: I have information like this from the server and have to create a tree structure from the information(data). The data from the server comes in this form: APP ... |
There are a bunch of problems with your question. First if you want to store a tree in textual way then XML would be a better choice. Much better than this. So that's the first question, why aren't you using XML? The next problem is that your example output doesn't match, in any way, the unformatted code you dumped above it. ... |
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Hi I wanted to create a software which is for network business(similar to AMWAY ). where people market the product and gets the commmision to his upper hierarchy i.e sharing the revenue to all his networked member.I wnated to create a pictorial representation of Tree structure iam confused which one to use JGraph or JGo or Jfreechart to design tree structure ... |
After a quick glance, I'd say the only way to change this tree is via the setLeft/setRight methods. BTW - getChildren is a very poor name for a method that actually returns the preorder-linearized subtree rooted at the target node. Not to mention that NumericNode behaves conceptually different from the other nodes by returning a copy instead of itself. |
Hi i have a simple tree structure as follows: A tree has a root. A root is just a node with no parent. A node has a list of children and a condition. The condition represents a label for the edge to the nodes parent. I want to have a nide way of printing it out for example say i have ... |
I'm working on a program which is going to contain a lot of settings for different users. What I decided to do is build a directory structure for the settings like the Registry does for Windows. I can think of a few ways to build this but I would like it to be pretty peppy and not waste too much space ... |
I am fairly sufficient programming in Java, however I have never had the need to use (or learn) ways of implementing tree structures; therefore i'll try and explain carefully what i'm trying to achieve. I need a method of grouping a small number of objects (no more than 20) in a logical way. The objects stored in the tree will be ... |
Hi, I'm coding a text app and I need to scan a given directory to print all the structure (subdirectories included). It will be a recursive method, so I'm thinking in putting all the information in a static tree data structure, and print it at the end using System.out.println(). Which is the best solution for that tree structure? A XML memory ... |
Hi, I am wondering is there any Java API to work on Tree based data structure. I could read in some forums / sites that teach me how to create tree based objects using collection. But I wanted to know is there any core java API that can be used directly for tree based operations. (like binary tree or other type ... |
I have a requirement to create a tree like data structure. I have four jsp's, int the first one, i display a list of parent items in form of checkboxes, based on what is selected in the first one, in the secong page i display the children(sub items) of the selected ones in form of checkboxes, similarly in the 3rd page ... |
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Hi, I have to implement tree structure in java. Each node in the tree can have child nodes. Also, I need to search for a node in this tree by passing some key. Can anyone guide how to implement such data structure in Java? I would like to use map collection. Anyother implementations are also welcome... |
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hi....in my application i have a xml and xslt ..i have to generate one html that will display the xml which will have 2 display area one is for navigator and one view area there will be a navigator which is display all the nodes with its hierrerchy and when we click a node its all attribute value will be shown ... |