Tree traversal Java Program

Hi,
I need the below implementation in JAVA :
Scenario : Need to traverse once through all nodes of a tree
Input :
(i) Starting node of traversal
(ii) List of nodes in the Tree
(iii) Parent of all nodes, say, mapping like (each_node, list_of_its_parent) (OR) (each_node, list_of_its_child)
Eg TREE :
A___________________ F
| | | |
|__B | | |
| C D_____|
| |___
H | |
E G
In the above example
(node, child_list) :--
=============
(A, {B,C,D})
(B, {H})
(C, {E,G})
(F, {D})
In the above tree, if any node is given as the starting node, I need to traverse through the complete tree visiting all nodes once.
Please help,
Thanks
Sam

That is not a tree;Does it matter? You can always traverse a DAG as a
tree can't you? The A in DAG means acyclic so a DAG
is always also a tree.Check the definitions before you reply please: a DAG
is not "aways also" a tree; no discussion about it. Don't confuse
matters.Who's confusing matters? You introduced the DAG so
you explain why and what consequences it has!No, I just gave a name to what the OP said: s/he didn't show a tree,
s/he showed a DAG; that's all I did.
So a DAG can not always be expanded to a tree? Is that what you're
saying?There's no 'expanding' here; A tree is a very restricted DAG instead.
kind regards,
JosAnd zip up please. Your fake intimacy isn't always wellcome.Stay out of this discussion then; easy as that: a) you lack the knowledge
to participate in this discussion and b) you don't like my friendly greetings,
so the best thing for you, and for this discussion, is that you stay out of it.
kind regards,
Jos

Similar Messages

Java program/package in project tree

On a fairly large web services project I am working on I started using
workshop to develop a couple of straight java programs and put them in the
project tree right next to the jws programs. This worked great, I could
take advantage of the debugging and code completion type editing capability
in Workshop. Last week I moved this source code, plus all of the common
classes, into a directory under the top level project directory
(com/myCompany/api/structures and com/myCompany/api/util) and copied the
programs into there (Workshop changed the package names appropriately). It
all ran fine.
This week another developer got the latest pull from source control with the
directory mentioned above but cannot build. The message is "Package
com.myCompany.api.util not found in import". I am looking right at the file
structure and is the same as on the original machine that it was built on.
Any idea why it cannot find that file/directory/package?
Is there anyway to forceworkshop to build a java program? The build menu
command is disabled when working on a java file.
It would be great to have a section in the support docs about writing java
classes in Workshop. We are determined to keep our jws's (what's the plural
of jws!) lean and use helper functions and/or business object/model
functionality for the bulk of the work. I know V1 of workshop has not
focused on this java editing capability but it is there and it's pretty
strong. Without this you have
to work in a seperate IDE to write helper classes do a build there and then
come back to Worskhop.
I'd like to know things like 1) when and how does workshop decide to do a
build of the java classes 2) is it possible to put other source code like
libraries somewhere so that I could debug right into these? and 3) how does
workshop resolve it's package structure at build time (other than
web-inf/classes)?
Thanks!

Well, our problem seems to be fixed but I'm not sure why. The java classes
had not been deleted from the top of the project tree. When we deleted them
suddenly the import started working ... go figure ... maybe it was something
else we did. I would still be interested in answers to my more general
questions about java source in workshop if possible ...
thx
"Dave Remy" <[email protected]> wrote in message
news:[email protected]...
On a fairly large web services project I am working on I started using
workshop to develop a couple of straight java programs and put them in the
project tree right next to the jws programs. This worked great, I could
take advantage of the debugging and code completion type editingcapability
in Workshop. Last week I moved this source code, plus all of the common
classes, into a directory under the top level project directory
(com/myCompany/api/structures and com/myCompany/api/util) and copied the
programs into there (Workshop changed the package names appropriately).It
all ran fine.
This week another developer got the latest pull from source control withthe
directory mentioned above but cannot build. The message is "Package
com.myCompany.api.util not found in import". I am looking right at thefile
structure and is the same as on the original machine that it was built on.
Any idea why it cannot find that file/directory/package?
Is there anyway to forceworkshop to build a java program? The build menu
command is disabled when working on a java file.
It would be great to have a section in the support docs about writing java
classes in Workshop. We are determined to keep our jws's (what's theplural
of jws!) lean and use helper functions and/or business object/model
functionality for the bulk of the work. I know V1 of workshop has not
focused on this java editing capability but it is there and it's pretty
strong. Without this you have
to work in a seperate IDE to write helper classes do a build there andthen
come back to Worskhop.
I'd like to know things like 1) when and how does workshop decide to do a
build of the java classes 2) is it possible to put other source code like
libraries somewhere so that I could debug right into these? and 3) howdoes
workshop resolve it's package structure at build time (other than
web-inf/classes)?
Thanks!

How to call another directory java program?

Hi All,
For Example:
My program is here in two directories.Let Think that directory names like A and B.
Let Program names like Aprog(A directory) and Bprog(B directory).
I want to call Aprog to Bprog method.
How to call?
Plz., help me ASAP.
--Mohan

My program is here in two directories.Let
Think that directory names like A and B.
It's more complicated than that. A java program consists of multiple .class files. In general you have one or more "trees" of directories of .class files, where the structure of the tree reflects the package structure. So a the class file for "org.dingbat.Thingy" is <basedir>/org/dingbat/Thingy.class where <basedir> is some directory on the class path.
So referencing one class from another in different directories requires that the source provides the "fully qualified name" of the class (usually on an import) and making sure that, if it's in a different class file tree, both base directories are on the class path.

Java Programming Questions

I have taken a couple class in Java programming in just regular programming with GUI/console. I am looking to further my programming skills and wonder what course I need to take to become a java programmer for companies. I am confused on all this language in Java and there does not seem to be any reference to explain exactly what these technologies are. Example is.....What is J2EE? What is .JSP? Are they the same things? What environment is most commonly used in jobs? What about Java certifications?

Here's the path tree to become a Java Programmer from Sun Microsystems:
http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getlppage?page_id=212&path=SJPF
There are other paths like Web Development and Databasing, so click around if you're interested in those. I think for a standard Java Programming job you will want the "Java Programming for Professionals - Sun Certified Java Programmer".
However, most Jobs are specialized and require skills like JSP Development or Java Enterprise. Look around at a job search site and see what types of skills Java jobs are asking for.
I've noticed, for example, that Java web jobs generally require: PHP, HTML, JSP, XML, SQL, etc.

Binary Tree in Java - ******URGENT********

HI,
i want to represent a binary tree in java. is there any way of doing that.
thanx
sraphson

HI,
i want to represent a binary tree in java. is there
e any way of doing that.
thanx
sraphsonFirst, what is a binary tree? Do you know how the binary tree looks like on puesdo code? How about a representation in terms of numbers? What is a tree? What is binary? The reason I ask is, what do you know about programming?
Asking to represent a binary tree in java seems like a question who doesn't know how it looks like in the first please. Believe me, I am one of them. I am not at this level yet. If you are taking a class that is teaching binary trees and you don't know how it looks like, go back to your notes.
Sounds harsh, but it is better to hear it from a person that doesn't know either then a boss that hired you because Computer Science was what you degree said. Yet, you don't know how to program?
Telling you will not help you learn. I can show you tutorials of trees would be start on where to learn.
HOW TO USE TREES (oops this is too simple, but it is a good example)
http://java.sun.com/docs/books/tutorial/uiswing/components/tree.html
CS312 Data Structures and Analysis of Algorithms
(Here is a course about trees. Search and learn)
http://www.calstatela.edu/faculty/jmiller6/cs312-winter2003/index.htm

Binary trees in Java

Hi there
Do you have any suggestions about how to implement trees or binary trees in Java?
As far as I know there are already some libraries for that, but I don't know how to use them. Was trying to get some implementation examples but I'm still very confused.
How can I use for example:
removeChild(Tree t)
addChild(Tree t)
isLeaf()
Thanks in advance

Lulu wrote:
Hi there
I have several questions about binary trees
Let's see, I use TreeMap to create them with the following code:
TreeMap treeMap = new TreeMap<Integer, String>();
treeMap.put("first", "Fruit");
treeMap.put("second","Orange");
treeMap.put("third", "Banana");
treeMap.put("fourth", "Apple");You've defined the map to hold integer keys and strings as values, yet you're trying to add string keys and string values to it: that won't work.
If this is a map how do I define if the data should go to the left or to the right of certain node?That is all done for you. In a TreeMap (using the no-args constructor), you can only store objects that are comparable to each other (so, they must implement the Comparable interface!). So the dirty work of deciding if the entry should be stored, or traversed, into the left or right subtree of a node, is all done behind the scenes.
Also note that TreeMap is not backed up by a binary tree, or a binary search tree, but by a red-black tree. A red-black tree is a self balancing binary tree structure.
Should I have dynamical keys so that they increase automatically when adding new data?
According to a webpage I should use Comparator(), is that to find the data in the tree and retrieve the key?
ThanksI am not sure what it is you want. I am under the impression that you have to write a binary tree (or a binary search tree) for a course for school/university. Is that correct? If so, then I don't think you're permitted to use a TreeMap, but you'll have to write your own classes.

Need help with jsp that uses a java program

Hi, sorry for my english but i am italian.
I've got a problem: i use java builder and i have a java program(this program has got a main and includes libraries) about graphich on tree, this program visualizes these trees and makes operations on these.
Now i must use JSP so that a client can see this program (this program is on the server) and can interact with it.
I can't use applet.I must use only jsp.
Who can tell me how can i start???
Thanks.

If you are not allowed to use an applet, then you are limited by what can be achieved with HTML in a browser.
You would have to figure out how to render it with HTML, then program your jsp to write out this html programatically.

A simple Java program to be compiled with ojc and executed with java.exe

Hi ,
This thread is relevant to Oracle Java Compiler (file ojc) and jave.exe file.
I have written a simple java program which consists of two simple simple classes and using the JDev's 10.1.3.2 ojc and java files , i'm trying to execute it after the successful compilation....
The problem is that trying to run it... the error :
Exception in thread "main" java.lang.NoClassDefFoundError: EmployeeTest
appears.
How can i solve this problem...????
The program is as follows:
import java.util.*;
import corejava.*;
public class EmployeeTest
{ public static void main(String[] args)
   { Employee[] staff = new Employee[3];
      staff[0] = new Employee("Harry Hacker", 35000,
         new Day(1989,10,1));
      staff[1] = new Employee("Carl Cracker", 75000,
         new Day(1987,12,15));
      staff[2] = new Employee("Tony Tester", 38000,
         new Day(1990,3,15));
      int i;
      for (i = 0; i < 3; i++) staff.raiseSalary(5);
for (i = 0; i < 3; i++) staff[i].print();
class Employee
{ public Employee(String n, double s, Day d)
{ name = n;
salary = s;
hireDay = d;
public void print()
{ System.out.println(name + "...." + salary + "...."
+ hireYear());
public void raiseSalary(double byPercent)
{ salary *= 1 + byPercent / 100;
public int hireYear()
{ return hireDay.getYear();
private String name;
private double salary;
private Day hireDay;
For compilation... i use :
D:\ORACLE_UNZIPPED\JDeveloper_10.1.3.2\jdev\bin\ojc -classpath D:\E-Book\Java\Sun_Java_Book_I\Corejava EmployeeTest.java
For execution , i issue the command:
D:\ORACLE_UNZIPPED\JDeveloper_10.1.3.2\jdk\bin\java EmployeeTest
NOTE:I tried to use the jdk of Oracle database v.2 but the error :
Unable to initialize JVM appeared....
Thanks , a lot
Simon

Hi,
Thanks god....
I found a solution without using Jdev.....
C:\oracle_files\Java\Examples>SET CLASSPATH=.;D:\E-Book\Java\Sun_Java_Book_I\Corejava
C:\oracle_files\Java\Examples>D:\ORACLE_UNZIPPED\JDeveloper_10.1.3.2\jdk\bin\javac EmployeeTest.java
C:\oracle_files\Java\Examples>D:\ORACLE_UNZIPPED\JDeveloper_10.1.3.2\jdk\bin\java EmployeeTest
What does Ant has to do with this?Sorry, under the Ant tree a classpath label is found....I'm very new to Java and JDev...
You need to include the jar file that has the Day method in it inside project properties->libraries.I have not .jar file.. just some .java files under the corejava directory.... By the way , I have inserted the corejava directory to the project pressing the button Add Jar/Directory.... , but the problem insists..
Thanks , a lot
Simon

Send signal from java program to Excel document

Hi
I have a Java-program that once a day brings information from a website on the internet. When this has been done, I want to send a signal to an Excel document to run a vba-macro. The "signal" can e.g. be to put a value in a certain cell in the Excel document.
Any ideas on how to do this?

Thanks gtRpr I didnt actually know what webservices are so I looked them up, below is one of definintions i got, and this is not what I want. The class that i write will be only used by me and only to extract data from one website.
>
Web services allow organizations to communicate data without intimate knowledge of each other's IT systems behind the firewall.
secruity is not a problem, so there should be no need to encypt. Here is the kind of steps that I have put together so far, please could you comment on them...
1. find out what the textfields are called on the website that need //do this by hand once
2. parse the website username and password
3. traverse to correct web page
4. return page info in xml format //sorry im new to this side of programming, is it easy to convert html - xml
5. need to strip out all unessary xml comments to reveal me with my specific data
Thanks
Edited by: calypso on Aug 8, 2008 2:15 AM

Setting persitent system environment variables using java program

hai,
Iam tryng to write installation for an application,which require to set some persistent system environment variables using java program. I have tried using set command Runtime.getRuntime().exec("cmd /c set blah blah "),but this applies only to that particular DOS promt only,i presume.And this is not perisistent.please do help.
Biju

The solution I proposed worked only on Windows XP/2003.
The following solution will work on Windows NT/2000/XP/2003 with JDK 1.2+.
1- Download the [url http://www.gjt.org/download/time/java/jnireg/registry-3.1.3.zip]JNIRegistry zipped archive.
2- Open the registry-3.1.3.zip file and extract in the folder of your choice ( Eg. c:\setenv ) only the 2 first files (when sorted by path): ICE_JNIRegistry.dll and registry.jar.
You don't need to keep the folder tree in the extraction.
3- Create the following SetEnv.java file in the same folder ( Eg. c:\setenv ).
import com.ice.jni.registry.Registry;
import com.ice.jni.registry.RegistryKey;
import com.ice.jni.registry.RegStringValue;
import com.ice.jni.registry.RegistryValue;
public class SetEnv
    static final String REG_HKLM_SUBKEY_NAME = "SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment";
    public static void main(String[] args)
    throws Exception
        new SetEnv().exec(args);
    void exec(String[] args)
    throws Exception
        if (args.length != 2)
            throw new IllegalArgumentException("\n\nUsage: java SetEnv {varName} {varValue}\n\n");
        String varName = args[0];
        String varValue = args[1];
        RegistryKey key = null;
        RegStringValue value;
        try
            key = Registry.HKEY_LOCAL_MACHINE.openSubKey(REG_HKLM_SUBKEY_NAME, RegistryKey.ACCESS_ALL);
            value = new RegStringValue(key, varName, RegistryValue.REG_EXPAND_SZ);
            value.setData(varValue);
            key.setValue(value);
            key.flushKey();
        finally
            try { key.closeKey(); }
            catch (Exception e) {}
}4- Compile it.
javac -classpath .;registry.jar SetEnv.java
5- Run it. varName and varValue are strings of your choice.
java -classpath .;registry.jar -Djava.library.path=. SetEnv varName varValue

Parsing xml in java program

In the following code i M NOT able to understand the use of part of code that is in BOLD
int tableno=tree.getChildCount();
*for(int table=0;table<tableno;table++){*
*if(table==0){*
tree=((DefaultMutableTreeNode)tree.getFirstChild());
*}else{*
tree=((DefaultMutableTreeNode)tree.getNextSibling());
tag1=(Tag)tree.getUserObject();
tableobj=(Table)tag1.getObject();
int rowno=tree.getChildCount();
*for(int rows=0;rows<rowno;rows++){*
*if(rows==0){*
tree=((DefaultMutableTreeNode)tree.getFirstChild());
*}else{*
tree=((DefaultMutableTreeNode)tree.getNextSibling());
tag1=(Tag)tree.getUserObject();
int colno=tree.getChildCount();
*for(int cols=0;cols<colno;cols++){*
*if(cols==0){*
tree=((DefaultMutableTreeNode)tree.getFirstChild());
*}else{*
tree=((DefaultMutableTreeNode)tree.getNextSibling());
tag1=(Tag)tree.getUserObject();
columnobj=(Column)tag1.getObject();
int inner=tree.getChildCount();
*for(int k=0;k<inner;k++){*
*if(k==0){*
tree=((DefaultMutableTreeNode)tree.getFirstChild());
*}else{*
tree=((DefaultMutableTreeNode)tree.getNextSibling());
tag1=(Tag)tree.getUserObject();
*if(tag1.getName().equalsIgnoreCase("image")){*
imagetag=(Images)tag1.getObject();
*if(imagetag.getId().equalsIgnoreCase("3")){*
*if(!lightimage.equals("")) {*
* imagetag.setURL(lightimage);*
*}*

This is the simplest way to read data from an XML file into a Java program. I have also included some basic error checking, so you can directly cut-paste this code with a few changes ofcourse. All you have to do is change the XML tags within the program to match those that are present in your XML file.
XML File
+<book>+
+<person>+
+<first>Kiran</first>+
+<last>Pai</last>+
+<age>22</age>+
+</person>+
+<person>+
+<first>Bill</first>+
+<last>Gates</last>+
+<age>46</age>+
+</person>+
+<person>+
+<first>Steve</first>+
+<last>Jobs</last>+
+<age>40</age>+
+</person>+
+</book>+
Java Progarm for Parsing the above XML File:
import java.io.File;
import org.w3c.dom.Document;
import org.w3c.dom.*;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class ReadAndPrintXMLFile{
public static void main (String argv []){
try {
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
Document doc = docBuilder.parse (new File("book.xml"));
// normalize text representation
doc.getDocumentElement ().normalize ();
System.out.println ("Root element of the doc is " +
doc.getDocumentElement().getNodeName());
NodeList listOfPersons = doc.getElementsByTagName("person");
int totalPersons = listOfPersons.getLength();
System.out.println("Total no of people : " + totalPersons);
for(int s=0; s<listOfPersons.getLength() ; s++){
Node firstPersonNode = listOfPersons.item(s);
if(firstPersonNode.getNodeType() == Node.ELEMENT_NODE){
Element firstPersonElement = (Element)firstPersonNode;
NodeList firstNameList = firstPersonElement.getElementsByTagName("first");
Element firstNameElement = (Element)firstNameList.item(0);
NodeList textFNList = firstNameElement.getChildNodes();
System.out.println("First Name : " +
((Node)textFNList.item(0)).getNodeValue().trim());
NodeList lastNameList = firstPersonElement.getElementsByTagName("last");
Element lastNameElement = (Element)lastNameList.item(0);
NodeList textLNList = lastNameElement.getChildNodes();
System.out.println("Last Name : " +
((Node)textLNList.item(0)).getNodeValue().trim());
NodeList ageList = firstPersonElement.getElementsByTagName("age");
Element ageElement = (Element)ageList.item(0);
NodeList textAgeList = ageElement.getChildNodes();
System.out.println("Age : " +
((Node)textAgeList.item(0)).getNodeValue().trim());
}//end of if clause
}//end of for loop with s var
}catch (SAXParseException err) {
System.out.println ("** Parsing error" + ", line "
+ err.getLineNumber () + ", uri " + err.getSystemId ());
System.out.println(" " + err.getMessage ());
}catch (SAXException e) {
Exception x = e.getException ();
((x == null) ? e : x).printStackTrace ();
}catch (Throwable t) {
t.printStackTrace ();
//System.exit (0);
}//end of main
There are better implementations of reading XML files which would work for any XML file. The above one would require a few changes every time the XML tag names change. But this is much more simpler than the other programs.

Error while running a Java Program

Can anyone help me,
I am getting the following error while running a Java program, Below is the exception thrown, please help.
java.nio.BufferOverflowException
at java.nio.Buffer.nextPutIndex(Buffer.java:425)
at java.nio.DirectByteBuffer.putChar(DirectByteBuffer.java:463)
at org.jetel.data.StringDataField.serialize(StringDataField.java:295)
at org.jetel.data.DataRecord.serialize(DataRecord.java:283)
at org.jetel.graph.DirectEdge.writeRecord(DirectEdge.java:216)
at org.jetel.graph.Edge.writeRecord(Edge.java:288)
at com.tcs.re.component.RESummer1.run(RESummer1.java:505)
java.nio.BufferOverflowException
at java.nio.Buffer.nextPutIndex(Buffer.java:425)
at java.nio.DirectByteBuffer.putChar(DirectByteBuffer.java:463)
at org.jetel.data.StringDataField.serialize(StringDataField.java:295)
at org.jetel.data.DataRecord.serialize(DataRecord.java:283)
at org.jetel.graph.DirectEdge.writeRecord(DirectEdge.java:216)
at org.jetel.graph.Edge.writeRecord(Edge.java:288)
at com.tcs.re.component.RECollectCont.run(RECollectCont.java:304)

Ok, let's see. Write the following class:
public class Grunt {
public static void main(String[] args) {
System.out.println("Hello Mars");
}Save it as "C:\Grunt.java", compile by typing:
javac c:\Grunt.javaRun by typing:
java -classpath "C:\" GruntDoes it say "Hello Mars"? If yes, go back to your program and compare for differences (maybe you used the "package" statement?).
Regards

Running a java program a set number of times

This is a general question. Is it possible to make a java program run only 5 times for the sake of arguement.
Basically I want to write a program that will give the user some flexibility when it will actually run another Java program, but I only want them to be able to say "not now' for a set number of times. When the last time comes the other program will launch. I was initially thinking of the Do Whilw loop, but this needs to work when the program is restarted.
Program starts, it has 5 times it will run before it does something else(doesn't really matter now I think). User takes option "Not Now" and the program ends, but warns the user this will run 4 more times before you will need to do something.
This process will repeat until the user takes the option "Ok install now" or the time limit expires and the install occurs anyway. Can someone point me in the right direction.

ok I see so it's like one those programs that you download for free on the internet and they give you a set amount times to use it before you have to pay for it. but in this case when the number of times you use it equals 5 (or when the user clicks ok) a different java app will open automatically.
My first thought would be to Write a Serialized object to disk using objectOutputStream that stores the number of times the application has been opened. and each time the program runs it checks for the serialized object and then you can do something like what I posted before. of course if were worried about security the user could always look for the object and erase it, if so then I guess we would have to come up with another plan of attack
Hope this helps

Running a java program

This shows how dumb i am.
I have a java program all wrote. How can i run it without using the compiler? Can i have a .exe file or something that I just have to click on to run??
Thanks again
Agdude

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\awaguespack>cd jbproject\untitled1\classes\untitled1
C:\Documents and Settings\awaguespack\jbproject\untitled1\classes\untitled1>java
form
Exception in thread "main" java.lang.NoClassDefFoundError: form (wrong name: unt
itled1/form)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
C:\Documents and Settings\awaguespack\jbproject\untitled1\classes\untitled1>dir
Volume in drive C has no label.
Volume Serial Number is C065-81CA
Directory of C:\Documents and Settings\awaguespack\jbproject\untitled1\classes\
untitled1
07/24/2003 02:21 PM <DIR> .
07/24/2003 02:21 PM <DIR> ..
07/24/2003 02:21 PM 7,655 form.class
1 File(s) 7,655 bytes
2 Dir(s) 36,031,016,960 bytes free
C:\Documents and Settings\awaguespack\jbproject\untitled1\classes\untitled1>echo
%classpath%
%classpath%
C:\Documents and Settings\awaguespack\jbproject\untitled1\classes\untitled1>

Running a java program at "Start Up"

Besides running an html file with an applet in it. Are there any simple ways to launch a java program every time the computer is turned on.
I am not asking for specific directions, but rather just an idea, and i will go find my own guide.

Well two ideas (if ur on windows) u could try are -
one, if you had a class file you could simply create a
batch file on windows that says java <class> and then
put that batch file in your startup so that the class
is run at startup or else you could think of modifying
the registry keys on windows to run this class at
startup - whichever works for you.Or you could just jar the program up, adding a Main-Class indicator in the manifest, and then add a shortcut to the jar to the startup folder, as someone else stated. Theres little need to go messing around with DOS batch in modern windows.

Tree traversal Java Program

Similar Messages

Maybe you are looking for