String tokenize resultset, and a new query on tokens

Hello all,
I have to read a field from tablea , the tokenize the resulting string to get a number of strings
then i have to query tableb based on all theese string
basically i get a number of keys from tableA
then look up th ekey-value table for their values and display them.
any help on both design & code would be greatly appreciated.
i was thinking of putting the tokenized key into an array & somehow query the other tableB on that array , but am not quite sure how to do that!!
Urgent help is appreciated!!

Looks like you've found a complicated way of asking for a SQL join. If that is what you mean, the following query will do for you nicely. It will return all value2's from tableb's rows that have a match on the value in somefield with someotherfield in tablea for all rows in tablea with the specified search value.
SELECT b.value2
FROM TableA a INNER JOIN TableB b ON b.somefield = a.someotherfield
WHERE a.value1 = <your search value>
If you want each value2 to be returned at most once, even if it exists in the tables more than once, you might add the DISTINCT key word as you did in your question, but I do not see the need for that from your question.
Good luck,
Richard

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SQL Server 2012 Management Studio Displays Error With "New Query" and Intellisense Works Intermittenly

I was upgrade to SQL Server 2012 and Visual Studio 2010 was upgraded with SP1 the same day.  This is x64 machine.
Microsoft SQL Server Management Studio      11.0.2100.60
Microsoft .NET Framework      4.0.30319.261
Operating System      6.1.7601
Problem 1) With SQL Server Management Studio, selecting "New Query" a warning box is displayed: "The 'Microsoft.Practices.EnterpriseLibrary.Configuration.Design.VisualStudioIntegration2010Package, Microsoft.Practices.EnterpriseLibrary.Configuration.Design.VisualStudioIntegration2010,
Version=1.0.0.0, Culture=netutral, PublicKeyToken=null' package did not load correctly.    The problem mayhave been cuased by a configuration change or by the installation of another extension. You can get more information by running the
application together with the /log parameter on the command line, and then examining the file ...\AppDate\Roaming\Microsoft\AppEnv\10.0\ActivityLog.xml'. Continue to show this error message?
Problem 2) In a Query Initellisense works intermittently but most of the time it will not display anything. I have tried Edit|Intellisense|Refresh Cach size and also seperately, Edit | Intellisense | List Members but neither has helped. Also
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Hi WallyJim,
For your first problem, possible workaround:
In Programs and Features (or Add/Remove Programs), right click the Microsoft Enterprise Library 5.0 Optional Update 1 program and select change. Remove the VisualStudio2010 integration.
Then, install the EnterpriseLibrary Configuration extension from Microsoft via the Extension Manager in VS2010. This will allow you to launch the configuration editor from VS2010, but will not be installed for SSMS.
For more information, please refer to
https://connect.microsoft.com/SQLServer/feedback/details/620532/error-message-on-new-query-window-opening.
For your second problem, the following conditions might affect the behavior of IntelliSense:
There is a code error above the cursor.
The insertion point is inside a code comment.
The insertion point is inside a string literal.
The automatic options are turned off.
For more information, refer to Troubleshooting IntelliSense (SQL Server Management Studio):
http://msdn.microsoft.com/en-us/library/ms173434.aspx.
Thanks,
Maggie
Please remember to mark the replies as answers if they help and unmark them if they provide no help. This can be beneficial to other community members reading the thread.

Parsing and String tokenizer

I am trying to use String Tokenizer to extract fields from a file then do a calculation on some of the fields.
My problem is when I try to parse the strings that need the calculations I get error codes as shown at the end of post. I don't see why the parsing shouldn't work.( error codes are class expected and incompatable types)
// ParsingTextFile.java: Process text file using StringTokenizer
import java.io.*;
import java.util.StringTokenizer;
public class ParsingTextFile1 {
/** Main method */
public static void main(String[] args) {
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   BufferedWriter bws = null;
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    String line=null;
    String sname = null;
   String mid1= null;
    String mid2 = null;
    String finalSc = null;
/ double midterm1 = 0;
    double midterm2 = 0;
    double finalScore = 0;
    // Computed total score
    double total = 0;
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      // Create file input and output streams
      brs = new BufferedReader(new FileReader("in.dat"));
      bws = new BufferedWriter(new FileWriter("out.dat"));
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      sname = tokenizer.nextToken();
      mid1 = tokenizer.nextToken();
      mid2 = tokenizer.nextToken();
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      midterm2 = double.parseDouble(mid2);)//this code not working
      finalScore = double.parseDouble(finalScore);//this code not working
      out = new PrintWriter(bws);
      total = midterm1*0.3 + midterm2*0.3 + finalScore*0.4;
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    catch (FileNotFoundException ex) {
      System.out.println("File not found: in.dat");
    catch (IOException ex) {
      System.out.println(ex.getMessage());
    finally {
      try {
        if (brs != null) brs.close();
        if (bws != null) bws.close();
      catch (IOException ex) {
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}[\code]
errorsC:\j2sdk1.4.1_06\bin\ParsingTextFile1.java:43: class expected
    midterm1 = double.parseDouble(mid1);
                      ^
C:\j2sdk1.4.1_06\bin\ParsingTextFile1.java:44: class expected
    midterm2 = double.parseDouble(mid2);
                      ^
C:\j2sdk1.4.1_06\bin\ParsingTextFile1.java:45: class expected
    finalScore = double.parseDouble(finalScore);
                        ^
C:\j2sdk1.4.1_06\bin\ParsingTextFile1.java:43: incompatible types
found   : java.lang.Class
required: double
    midterm1 = double.parseDouble(mid1);
                     ^
C:\j2sdk1.4.1_06\bin\ParsingTextFile1.java:44: incompatible types
found   : java.lang.Class
required: double
    midterm2 = double.parseDouble(mid2);
                     ^
C:\j2sdk1.4.1_06\bin\ParsingTextFile1.java:45: incompatible types
found   : java.lang.Class
required: double
    finalScore = double.parseDouble(finalScore);
                       ^
6 errors
Process completed.

while(line.hasMoreTokens())
sname = tokenizer.nextToken();
   mid1 = tokenizer.nextToken();
mid2 = tokenizer.nextToken();
   finalSc= tokenizer.nextToken();
    midterm1 = double.parseDouble(mid1)//this code not working
     midterm2 = double.parseDouble(mid2);)//this code not working
   finalScore = double.parseDouble(finalScore);//this code not working
}if it doesn't work then you need to add delimiter Or the token that you are trying to convert into is not valid.

Enabling Create New Query and Personalize in Check Status

Hi All,
We followed below steps Enable Create New Query and Personalize in Check Status
Go to the role of the user - PFCG - Authorizations - Change authorization data - Cross-application authorization objects - authorizations for Personal Object Work List (POWL) iViews
Specified the application ID POWL_APPID - SAPSRM_E_CHECKSTATUS
What should be done to enable define query and personalize for all users.
We have changed the following settings -
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Edited by: Nikhil Malvankar on Sep 12, 2011 5:57 AM

You could the following to check if the Query still exists in the database:
Open SQL Management Studio and connect to the SQL Server hosting the ConfigMgr database
In SQL Managemnt Studio, Expand Database, Expand CM_YourSiteCode
Expand tables and find the dbo.Queries table
Right-click the dbo.Queries table and select Select Top 1000 Rows
See if you can find your "ghost" Query
Please note - it IS NOT supported
to make direct changes to ConfigMgr database so I would properly call PSS on this one before you start getting creative.

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boolean ret = true;
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boolean ret = true;
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Please look at the code i am posing. I am showing step by step where its not adding the null values.
Any help is always appreciated.
Thanks in advance.
============================================================================
Frame1 Class
============
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====================
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Can someone please help me with this problem
Thanks.

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Hi I have the same problem like you ...
My SQL Definition:
CREATE OR REPLACE TYPE RMSPRD.NB_TAB_STOREDATA is table of NB_STOREDATA_REC
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   v_margin           NUMBER(6,2),
   v_ly_sales         NUMBER(20,4),
   v_ly_cost          NUMBER(20,4),
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   v_ly_margin        NUMBER(6,2),
   v_sales_variance   NUMBER(6,2)
CREATE OR REPLACE PACKAGE RMSPRD.NB_SALES_DATA
AS
v_sales_format_tab   nb_tab_storedata;
FUNCTION sales_data_by_format_gen (
      key_value         IN       VARCHAR2,
      l_to_date         IN       DATE DEFAULT SYSDATE-1,
      l_from_date       IN       DATE DEFAULT TRUNC (SYSDATE, 'YYYY')
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I have a PLSQL function .. that will return table ..
when i use this in sql developer it is working fine....
select * from table (NB_SALES_DATA.sales_data_by_format_gen('TSC',
                                    '05-Aug-2012',
                                    '01-Aug-2012') )
it returning table format record.
I am not able to call from VO object. ...
Hope you can help me .. please tell me step by step process...
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Object[] bindVars) {
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System.out.println("--> 3");
return st.getObject(1);
catch (SQLException e) {
e.printStackTrace();
throw new JboException(e);

JDBC-ResultSet and ArrayList

Hi guys,
I need a help. The situation is next: I�m trying to store some results of ResultSet into ArrayList. Unfortunately, when I�m retrieving the data from ArrayList, the result, which I�m getting, is only the last row of a table. The result is repeating as many times as ArrayList size is. Could somebody explain me why it happens?
There is a snippet of the code to get a data from the ResultSet and add it into ArrayList:
// Execute a query
String sql = "select * from user";
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          ArrayList list = new ArrayList();
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          while(rs.next()) {
CustomerBean cb = new CustomerBean();
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               if(rs.getString("last_name")!=null)cb.setLastName(rs.getString("last_name"));
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Another snippet of the code to retrieve the data from ArrayList:
for (int i = 0; i < cb.getUserData().size(); i++){
System.out.println("First -"+((CustomerBean)cb.getUserData().get(i)).getFirstName()); // hire an error
System.out.println("Last - "+((CustomerBean) cb.getUserData().get(i)).getLastName());// hire an error
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I might suggest something like this:
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ResultSet rs = stmt.executeQuery(sql);
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if ( lastName != null )
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if ( dateOfBirth != null )
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list.add( sb );
for (int i = 0; i < list.size(); i++){
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System.out.println("Last - "+((CustomerBean)list.get(i)).getLastName());// hire an error
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}Although this might not immediately solve your problem, it might help narrow down the area where the problem might exist.

Problems with string tokenizer

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          String variable = "";
          String accessModifier = "";
          StringTokenizer str = new StringTokenizer(checkText," \n", true);
          fileCheckBox.setText("");//clear file check box
          while(str.hasMoreTokens()) {//loop while there are more tokens to tokenize
               try{
                    checkText = str.nextToken();
                    //check for comments
                    if((checkText.startsWith("//")) || (checkText.equals("//")) ||
                       (checkText.startsWith("/**")) || (checkText.equals("/**")) ||
                       (checkText.startsWith("*")) || (checkText.equals("*"))) {
                         isComment = true;
                    if((checkText.equals("\n"))) isComment = false;
                    if(!isComment)
                         //check for access modifiers
                         if((checkText.equals("public")) || (checkText.equals("private")) ||
                            (checkText.equals("protected"))) {
                                      accessModifier = checkText;
                                 }else {
                                      accessModifier = "";
                         //check for data types
                         if((checkText.equals("boolean")) || (checkText.equals("char")) ||
                                 (checkText.startsWith("String")) || (checkText.equals("int"))) {
                                   dataType = checkText;
                                   variable = str.nextToken();//get variable expression
                                   System.out.println(accessModifier + " " + dataType + " " + variable);
               }catch(NoSuchElementException nsee) {//not enough tokens to complete operation
                    JOptionPane.showMessageDialog(null, "End of file");
                    return;//break from method
     }here is sample text
private String seven = "help";
char five[];
// String here
//int found
public boolean okay
and here is the output
String
char
String
boolean
//note the space before each output
hope someone can help
thanx in advance

1. Why do you check to see if the token starts with
//, /*, etc, etc. Later you check if the token
equals private, public, protected. It couldn't
equal if it started with a comment.if the token starts with a comment i dont want to read the rest of the line, so i set the isComment flag to true
2. I strongly suggest that you do it line by line.
Perhaps a string tokenizer that only tokenizes by
lines, then within that loop, another that tokenizes
by whitespace. i take it you mean putting the text into a bufferedreader and then using readLine()?? Bit new to string tokenization as you can possibly see
i managed to get the small test text to work more or less as i wanted but when ever i load a large code listing, the results are erratic to say the least
heres a section of this code
private int textNum = 0;/**Integer used to hold the text position within any given line*/
     private int lineNum = 0;/**Integer used to hold the line number within any given file*/
     static boolean application = false;/**Used to track if applet is ran from a browser or JAR file*/
     static boolean fileOpened = false;/**Used to track if file has already been opened*/
     static boolean isComment = false;
     private char lCurve = '(';
     private char rCurve = ')';
     private char lCurly = '{';
     private char rCurly = '}';
     private char lSquare = '[';
     private char rSquare = ']';
     String fullText = "";and heres the output
public int textNum //should be private!!!!
int lineNum //missing private
boolean application //missing static
boolean fileOpened //missing static
boolean isComment //missing static
//all below missing private
char lCurve
char rCurve
char lCurly
char rCurly
char lSquare
char rSquare
String fullText //not there at all

Implicit vs explicit close of resultsets and statements?

Hi friends.I am a newbie Java Developer..Okay Here goes
I have just made a LAN based Java application using Swing,JDBC with backend as MS-Access..The backend is on a shared network drive..
The application is distributed as jar files on the LAN PCs..
Everywhere I have connected to the database I have just closed the connection explicitly like this
con.close();
I do not close the associated resultset and statement explicitly
The specification says associated statements and resultsets close when you close
the connection,even if you don't explicitly close them
Also I am not using connection pool..its simple basic connection using DriverManager
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbcdbcSN name";
String user = "";
String pw = "";
con = DriverManager.getConnection(url, user, pw);
Statement stmt = con.createStatement();
String select = "" ;
ResultSet rows = stmt.executeQuery(select);
On the net everyone says to explicitly close everything..but I did not know that
earlier..
If specification says everything closes on
closing connection why do ppl insist on closing everything explicitly..?
Or is this driver dependent..don't the drivers go through the specification..
My driver is the Sun JDBC ODBC bridge.....
I found this method DriverManager.setLogwriter()
It prints out a trace of all JDBC operations..
So I ran a sample program with this method included...
I redirected output to a log file..
In that program I just explicitly close the connection without closing the
statements and resultsets explicitly...
After running the program and seeing the log I saw that the statements
and resultsets are closed implicitly If I just close the connection explicitly..
I am putting the log file and the code..
Have a look at the end of the log file..
Code
import java.sql.;
import java.io.;
class gc4test
public static void main(String args[])
Connection con = null;
try
FileWriter fwTrace = new FileWriter("c:\\log.txt");
PrintWriter pwTrace= new PrintWriter(fwTrace);
DriverManager.setLogWriter(pwTrace);
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbc:odbc:pravahcon";
String user = "admin";
String pw = "ash123";
con = DriverManager.getConnection(url, user, pw);
Statement stmt = con.createStatement();
Statement stmt1 = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
Statement stmt2 = con.createStatement();
Statement stmt3 = con.createStatement();
Statement stmt4 = con.createStatement();
Statement stmt5 = con.createStatement();
Statement stmt6 = con.createStatement();
Statement stmt7 = con.createStatement();
String select = "SELECT * FROM Users" ;
ResultSet rows = stmt.executeQuery(select);
ResultSet rows1 = stmt1.executeQuery(select);
while(rows.next())
con.close();
catch (ClassNotFoundException f)
System.out.println(f.getMessage());
System.exit(0);
catch (SQLException g)
System.out.println(g.getMessage());
System.exit(0);
catch (Exception e)
System.out.println(e.getMessage());
System.exit(0);
End of Log File
Setting statement option (SQLSetStmtAttr), hStmt=50275112, fOption=25
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
Fetching (SQLFetch), hStmt=50274224
End of result set (SQL_NO_DATA)
*Connection.close
8 Statement(s) to close
*Statement.close
Free statement (SQLFreeStmt), hStmt=50281544, fOption=1
deregistering Statement sun.jdbc.odbc.JdbcOdbcStatement@2e7263
*Statement.close
Free statement (SQLFreeStmt), hStmt=50277224, fOption=1
deregistering Statement sun.jdbc.odbc.JdbcOdbcStatement@1bf216a
*Statement.close
*ResultSet.close
*ResultSet has been closed
Free statement (SQLFreeStmt), hStmt=50274224, fOption=1
deregistering Statement sun.jdbc.odbc.JdbcOdbcStatement@156ee8e
*Statement.close
Free statement (SQLFreeStmt), hStmt=50280464, fOption=1
deregistering Statement sun.jdbc.odbc.JdbcOdbcStatement@c20e24
*Statement.close
Free statement (SQLFreeStmt), hStmt=50278304, fOption=1
deregistering Statement sun.jdbc.odbc.JdbcOdbcStatement@12ac982
*Statement.close
*ResultSet.close
*ResultSet has been closed
Free statement (SQLFreeStmt), hStmt=50275112, fOption=1
deregistering Statement sun.jdbc.odbc.JdbcOdbcStatement@e0e1c6
*Statement.close
Free statement (SQLFreeStmt), hStmt=50276144, fOption=1
deregistering Statement sun.jdbc.odbc.JdbcOdbcStatement@6ca1c
*Statement.close
Free statement (SQLFreeStmt), hStmt=50279384, fOption=1
deregistering Statement sun.jdbc.odbc.JdbcOdbcStatement@1389e4
Disconnecting (SQLDisconnect), hDbc=50271048
Closing connection (SQLFreeConnect), hDbc=50271048
Closing environment (SQLFreeEnv), hEnv=50270880
So like what these implicitly closed statements and resultsets are different from explicitly closed
resultsets and statements..?

Please do not crosspost/doublepost the same question again. It is rude in terms of netiquette.
Stick to one topic: [http://forums.sun.com/thread.jspa?threadID=5393387&messageID=10745794#10745794].

How to retrieve IndividualStrings from a txt file using String Tokenizer.

hello can any one help me to retrieve the individual strings from a txt file using string tokenizer or some thing like that.
the data in my txt file looks like this way.
Data1;
abc; cder; efu; frg;
abc1; cder2; efu3; frg4;
Data2
sdfabc; sdfcder; hvhefu; fgfrg;
uhfhabc; gffjcder; yugefu; hhfufrg;
Data3
val1; val2; val3; val4; val5; val6;
val1; val2; val3; val4; val5; val6;
val1; val2; val3; val4; val5; val6;
val1; val2; val3; val4; val5; val6;
i need to read the data as an individual strings and i need to pass those values to diffarent labels,the dat in Data3 i have to read those values and add to an table datamodel as 6 columns and rows depends on the data.
i try to retrieve data using buffered reader and inputstream reader,but only the way i am retrieving data as an big string of entire line ,i tried with stringtokenizer but some how i was failed to retrive the data in a way i want,any help would be appreciated.
Regards,

Hmmm... looks like the file format isn't even very consistent... why the semicolon after Data1 but not after Data2 or Data3??
Your algorithm is reading character-by-character, and most of the time it's easier to let a StringTokenizer or StreamTokenizer do the work of lexical analysis and let you focus on the parsing.
I am also going to assume your format is very rigid. E.g. section Data1 will ALWAYS come before section Data2, which will come before section Data3, etc... and you might even make the assumption there can never be a Data4, 5, 6, etc... (this is why its nice to have some exact specification, like a grammar, so you know exactly what is and is not allowed.) I will also assume that the section names will always be the same, namely "DataX" where X is a decimal digit.
I tend to like to use StreamTokenizer for this sort of thing, but the additional power and flexibility it gives comes at the price of a steeper learning curve (and it's a little buggy too). So I will ignore this class and focus on StringTokenizer.
I would suggest something like this general framework:
//make a BufferedReader up here...
do
String line = myBufferedReader.readLine();
if (line!=null && line.trim().length()>0)
line = line.trim();
//do some processing on the line
while (line!=null);So what processing to do inside the if statement?
Well, you can recognize the DataX lines easily enough - just do something like a line.startsWith("Data") and check that the last char is a digit... you can even ignore the digit if you know the sections come in a certain order (simplifying assumptions can simplify the code).
Once you figure out which section you're in, you can parse the succeeding lines appropriately. You might instantiate a StringTokenizer, i.e. StringTokenizer strtok = new StringTokenizer(line, ";, "); and then read out the tokens into some Collection, based on the section #. E.g.
strtok = new StringTokenizer(line, ";, ");
if (sectionNo==0)
//read the tokens into the Labels1 collection
else if (sectionNo==1)
//read the tokens into the Labels2 collection
else //sectionNo must be 2
//create a new line in your table model and populate it with the token values...
}I don't think the delimiters are necessary if you are using end-of-line's as delimiters (which is implicit in the fact that you are reading the text out line-by-line). So the original file format you listed looks fine (except you might want to get rid of that rogue semicolon).
Good luck.

Help!! i dont know how to make use of token from string tokenizer :(

Hi,
I would like to ask how to manipulate the token that are taken from string tokenizer. For example :
input = a b 1 f 986
supposed output:
a
b
1
f
986
How to make the output look like this?
Output = (a,b,f),(1,986)
Below is the source code of Algebra.java
import java.io.*;
import java.util.*;
* Read and print, using BufferedReader from System.in, onto System.out
public class Algebra {
public static void main(String[] av) {
try {
BufferedReader is = new BufferedReader(new InputStreamReader(System.in));
String inputLine;
System.out.print("Input =");
while ((inputLine = is.readLine()) != null) {
System.out.println("Output="+inputLine);
StringTokenizer st =
new StringTokenizer(inputLine, ", |");
while (st.hasMoreElements())
System.out.println("Token: " + st.nextElement());
break;
is.close();
} catch (IOException e) {
System.out.println("IOException: " + e);
Thank You

You can modify this to serve your goal.
BufferedReader is=null;
try {
is = new BufferedReader(new InputStreamReader(new FileInputStream("Data.txt")));
StreamTokenizer st = new StreamTokenizer(is);
int n=0,k=0,q=0;
String[] s=new String[20];
String[] s0=new String[10];
while(st.nextToken() != StreamTokenizer.TT_EOF) {
        switch(st.ttype) {
          case StreamTokenizer.TT_EOL:
            s[k] = new String("EOL");k++;
            break;
          case StreamTokenizer.TT_NUMBER:
            s0[q] = Double.toString(st.nval);q++;
            break;
          case StreamTokenizer.TT_WORD:
            s[k] = st.sval; // Already a String
             k++;
            break;
          default: // single character in ttype
            s[k] = String.valueOf((char)st.ttype); k++;
        } //end of while
   //   Some output processing here
}catch(IOException ioe){
   ioe.printStackTrace();
}catch(ArrayIndexOutOfBoundsException bx){
   System.err.println(bx);
}finally{
       try{      if(is !=null)     is.close();}catch(IOException ioe){;}
}

String Tokenizer/ Multiple Client app.

Hi all,
I am developing a multi user pure Java App.
My situation:
1. client request server for connection. > server accepted
2. client send his details (name*|*group*|*ID)
3. server receive the string, update itself and other client accordingly
My problem:
1. to send client detail (name*|*group*|*ID), String tokenizer is being used? and *|" serve as delimeter ?
2. how do create an statement that count the total user connected to server or leave the server
3. and how to assign an identifier to each connected client, thus server can perform differ operation based on the identifier.
Thanks Ya, if someone can provide me some suggestions
Happy Life

To answer your problems directly
1. Client Info: Yes, read all information from the client using an inputstream. convert that into a String, and use StringTokenizer (str, "|") to parse the information
2. # of clients: After a client has connected to your server, they will be automatically shunted to another port that that user alone communicates on. You should set up a new thread to listen to data being sent on that port. Keep these listeners in an array/vector/arraylist and use getSize()
3. The identifier could just be their port #

String tokenizer manipulation

Hi,
I would like to ask how to manipulate the token that are taken from string tokenizer. For example :
input = a b 1 f 986
supposed output:
a
b
1
f
986
How to make the output look like this?
Output = (a,b,f),(1,986)
How to make the program will be able to recognize and arrange the data into the output that i want.
Below is the source code of Algebra.java
import java.io.*;
import java.util.*;
* Read and print, using BufferedReader from System.in, onto System.out
public class Algebra {
public static void main(String[] av) {
try {
BufferedReader is = new BufferedReader(new InputStreamReader(System.in));
String inputLine;
System.out.print("Input =");
while ((inputLine = is.readLine()) != null) {
System.out.println("Output="+inputLine);
StringTokenizer st =
new StringTokenizer(inputLine, ", |");
while (st.hasMoreElements())
System.out.println("Token: " + st.nextElement());
break;
is.close();
} catch (IOException e) {
System.out.println("IOException: " + e);
Thank You

I'd make two arrays and fill them separately depending on whether you can parse the token as an int or not. Try running this code:
import java.io.*;
import java.util.*;
* Read and print, using BufferedReader from System.in, onto System.out
public class Main {
public static void main(String[] av) {
    int numbers[] = new int[20];
    String variables[] = new String[20];
    int numberPosition = 0;
    int variablePosition = 0;
    try {
        BufferedReader is = new BufferedReader(new InputStreamReader(System.in));
        String inputLine;
        System.out.print("Input =");
        while ((inputLine = is.readLine()) != null) {
            StringTokenizer st =
            new StringTokenizer(inputLine, ", |");
            while (st.hasMoreElements()) {
                String token = st.nextToken();
                try {
                    int i = Integer.parseInt(token);
                    numbers[numberPosition++] = i;
                } catch (NumberFormatException e) {
                    variables[variablePosition++] = token;
            System.out.print("(");
            for (int x = 0; x < variablePosition -1; x++)
                System.out.print(variables[x]+",");
            System.out.print(variables[variablePosition-1]+")");
            System.out.print("(");
            for (int x = 0; x < numberPosition -1; x++)
                System.out.print(numbers[x]+",");
            System.out.print(numbers[numberPosition-1]+")");
            break;
    } catch (IOException e) {
        System.out.println("IOException: " + e);
}Sample Output:
Input =a b 1 f 986
(a,b,f)(1,986)
press any key to exit...

In your lab05, replace instructor's Tokenizer class and MyStackQueue packag

Objective:
The objective of this lab is to get you some experience in processing strings character by
character and in implementing stacks and queues in a class package.
The programming assignment:
In your lab05, replace instructor’s Tokenizer class and MyStackQueue package with your own.
Requirements:
1. You must use an array to implement your queue.
2. You must use a linked list to implement your stack.
3. You must use the following frame work to implement your tokenizer.
class Tokenizer {
private char [] Buf;
private int cur;
Tokenizer(String infixExpression) {
Buf = infixExpression.toCharArray();
cur = 0;
Token nextToken() {
1. Skip blanks.
2. if (cur>=Buf.length) return null;
3. If the next character is a digit, keep reading until a non-digit is read.
Convert the string of digits into an integer.
String Digits = new String(Buf, start, len);
int num = Integer.valueOf(Digits).intValue();
Create and return an operand.
4. Otherwise, use the next character to create and return an operator.
class Tokenizer {
     private char[] Buf;
     private int cur;
     Tokenizer(String infixExpression) {
          Buf = infixExpression.toCharArray();
          cur = 0;
     Token nextToken() {
          int bufLength = Buf.length;
          Object obj = null;
          // ignore blank space
          while (cur < bufLength && Buf[cur] == ' ') {
               cur++;
          // if given string having only space return null
          if (cur >= Buf.length)
               return null;
          StringBuilder value = new StringBuilder();
          // Iterate through each element of string array and construct an string
          // for consecutive digits
          while (cur < bufLength && Buf[cur] <= '9' && Buf[cur] >= '0') {
               value.append(Buf[cur]);
               cur++;
          // if digits are there convert all digits as an integer value and create
          // operand
          if (value.length() > 0) {
               obj = new Operand(Integer.parseInt(value.toString()));
          // if at cur position no digit is present then create operand with the
          // same non digit value
          else {
               obj = new Operator(Buf[cur]);
               cur++;
          return ((Token) (obj));
package StackAndQueue;
public class Queue {
     private int front;
     private int rear;
     private int capacity;
     private Object S[];
     public Queue() {
          front = 0;
          rear = -1;
          capacity = 100;
          S = new Object[capacity];
     public boolean isEmpty() {
          return S[front] == null;
     public void enqueue(Object obj) {
          int insertionPoint = (rear + 1) % capacity;
          if (S[insertionPoint] == null) {
               S[insertionPoint] = obj;
               rear = insertionPoint;
          } else {
               System.out.println("Queue capacity is full");
     public Object dequeue() {
          if (S[front] != null) {
               Object obj = S[front];
               S[front] = null;
               front = (front + 1) % capacity;
               return obj;
          } else {
               System.out.println("Queue is empty");
               return null;
     public String toString() {
          StringBuilder state = new StringBuilder("[");
          for (int i = front; i < capacity; i++) {
               if (S[i] != null) {
                    state.append(S[i] + ", ");
          for (int i = 0; i < front; i++) {
               if (S[i] != null) {
                    state.append(S[i] + ", ");
          if (state.length() > 1) {
               state.delete(state.length() - 2, state.length() - 1);
          state.append("]");
          return state.toString();
package StackAndQueue;
import java.util.LinkedList;
import java.util.List;
public class Stack {
     List<Object> linkedList = null;
     public Stack() {
          linkedList = new LinkedList<Object>();
     public boolean isEmpty() {
          return linkedList.size() == 0;
     public void push(Object obj) {
          linkedList.add(obj);
     public Object pop() {
          int topIndex = linkedList.size() - 1;
          if (topIndex >= 0) {
               Object obj = linkedList.get(topIndex);
               linkedList.remove(topIndex);
               return obj;
          } else {
               return null;
     public Object top() {
          int topIndex = linkedList.size() - 1;
          if (topIndex >= 0) {
               return linkedList.get(topIndex);
          } else {
               return null;
}

So you want us to do what ?
Edited by: sabre150 on Oct 9, 2012 3:17 PM
Cross posted to http://www.coderanch.com/t/594750/Servlets/java/your-lab-replace-instructor-Tokenizer .

String tokenize resultset, and a new query on tokens

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