Java SubStrings

Hey guyz,
I really need some help here on the logic/ algorithm for thiz question...Now I have to identify whether the text that I have typed in the textArea is a java operator or not n extract all the operator found in the textarea...Seems to me like I have done it properly, but there iz somethin wrong...Itz givin me the same operator as output
import java.util.* ;
import java.awt.event.*;
import java.awt.*;
import java.io.*;
import javax.swing.*;
public class MyOperators extends JFrame implements ActionListener {
    private JTextArea space, output ;
    private Container c ;
    private JLabel title ;
    private JButton check ;
    private int count ;
    private JPanel pan1, pan2, pan3 ;
    private String operators[] = {"++","--","!","~","<<",">>",">>>",">=","<=",
    "!=","==","instanceof","&&","||","^","?:","+=","-=","*=","/=","%="} ;
    private String operators1[] = {"+","-","*","/","%","!",">","<","&","|","="} ;
    private ArrayList alist ;
    public MyOperators()
         super("Check Operators");
      c = getContentPane();
         space = new JTextArea() ;
         space.setSize(200, 200) ;
         output = new JTextArea() ;
         output.setSize(200, 200) ;
         title = new JLabel() ;
         title.setText("Please Enter your text") ;
         check = new JButton("Check") ;
         check.addActionListener(this);
         check.setSize(70, 30) ;
         pan1 = new JPanel() ;
         pan1.add( title ) ;
         pan2 = new JPanel() ;
         pan2.setLayout( new GridLayout(3, 1) ) ;
         pan2.add( space ) ;
         pan2.add( output ) ;
         pan2.add( check ) ;
         c.add(pan1,BorderLayout.NORTH);
         c.add(pan2,BorderLayout.CENTER);
         setSize(300,300);
      setVisible(true);
      setDefaultCloseOperation(EXIT_ON_CLOSE);
    public static void main (String args[])
          MyOperators op = new MyOperators() ;
    public void actionPerformed(ActionEvent a)
        Object obj = a.getSource();
        alist = new ArrayList() ;
        String value[] ;
        count = 0;
        String display = "" ;
        int m = -1 ;
        int q = -1 ;
        StringBuffer wholetext = new StringBuffer(space.getText()) ;
        if( obj == check ){
            for(int i = 0; i < operators.length; i++){
                    m = wholetext.indexOf(operators) ;
if( m < 0 & i < operators1.length ){
q = wholetext.indexOf(operators[i]) ;
if( m > 0 ){
alist.add( wholetext.substring(m, m + (operators[i].length()) )) ;
else if( q > 0 ){
alist.add( wholetext.substring(q, q + (operators1[i].length()) )) ;
for(int i = 0; i < alist.size(); i++){
Iterator iter = alist.iterator() ;
value = new String[alist.size()] ;
value[i] = (String)iter.next() ;
display += value[i] + "\n";
output.setText(display);
Can someone kindly highlight where is the mistake and how to correct it?

corlettk wrote:
q and m are used to capture the index of the sub-string(operators) in the string of text.Why the two sets of operators? ... and why those two (strange) groupings?
Edited by: corlettk on 9/03/2008 10:20
And oh yeah... my comment about MEANINFUL variable names still stands... you MUST learn to write readable code if you want to make a living at this. It ain't optional. Period.If u look at the array u would understand....there are 2 arrayz.....If I need to track a "+" sign operator in the String of text...Itz goin to accept ("++") increment operator string as 2 separate ("+" "+" )addition operator....Thatz y I separate them into 2 different arrayz
Edited by: raggy on Mar 9, 2008 3:25 AM

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Substrings in java

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When I run the code above, I want it to search the string and return all occurrences of "is". When I run the loop it prints "is" alright, but goes into an infinite loop. Why? I suspect I need a stopping condition, but I can't figure.

Why would you think i would ever be -1? Calling indexOf() returns the location of the first occurrence of the substring. So if it exists, every time you loop you'll find the word 'is' in the same spot.
Try using the other indexOf() method
[http://java.sun.com/javase/6/docs/api/java/lang/String.html#indexOf(java.lang.String,%20int)]
Edited by: newark on Apr 21, 2008 12:58 PM

Substituting substrings (java 1.2)

Please help me design a method called
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I need to locate substring text1 within a general string. Then substitute substring text1, with text2. The following code does not seem to work: substring(k, text1.length()) = text2. Please help, thanks.

I think this should work...
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Hey folks,
i stumbled about the following problem: I want to read IDs from a textfile (around 100.000 lines) an store them in a List or HashMap for later use. When I store them as Integers there is no problem, but when I store them as Strings I quickly run out of memory. The IDs are 6 chars long, so an Integer would use 2 Bytes and an unicode String 12. When I run the following code the memeory usage is ca. 13 MB, but when nbot commenting out the add-command for the string list, it qucikly raises up to ca. 70 MB and then throws the OutOfMemoryError. I tried a run with -mx1024M then the programm succesfully terminates but it uses a peak heap of 300 MB! Can anyone explain these differences?
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import java.io.FileInputStream;
import java.io.InputStreamReader;
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P.S.: I also tried HashMaps instead of List, same failure! :-(
Edited by: schneidexe on Feb 7, 2008 4:15 PM

kajbj wrote:
kajbj wrote:
What happens if you replace the line
String str = line.substring(10, 16);
with
String str = new String(line.substring(10, 16));
?I should probably explain why I want this tested.
A call to substring creates a substring that chares the character data with the original string (in this case the whole line), so all of your substrings are still forcing the whole lines to be kept in memory. Calling new String() on the substrings will create a new string that doesn't share the character data, so the char[] will be truncated and the string that is referencing the whole line can be GC:ed
KajThat did it! Thank you very much. I did not test this, because I generated the substring in both cases. But I think in the first case (w/o storing in in the List) the GC frees the memeory because the generated substring isn't used anymore after it's creation.
So thanx again!
schneidexe
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Or you might want to look at the Scanner class.
http://java.sun.com/j2se/1.5.0/docs/api/index.html

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My regular expression is a very long one and the
Pattern.compile just take too long. The worst case
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DIR_CT_LOGGIN    /usr/sap/X32/SYS/global
DIR_CT_RUN              /usr/sap/X32/SYS/exe/run
DIR_DATA              /usr/sap/X32/DVEBMGS32/data
DIR_DBMS              /usr/sap/X32/SYS/SAPDB
DIR_EXECUTABLE /usr/sap/X32/DVEBMGS32/exe
DIR_EXE_ROOT     /usr/sap/X32/SYS/exe
DIR_GEN              /usr/sap/X32/SYS/gen/dbg
DIR_GEN_ROOT    /usr/sap/X32/SYS/gen
DIR_GLOBAL        /usr/sap/X32/SYS/global
DIR_GRAPH_EXE /usr/sap/X32/DVEBMGS32/exe
DIR_GRAPH_LIB   /usr/sap/X32/DVEBMGS32/exe
DIR_HOME             /usr/sap/X32/DVEBMGS32/work
DIR_INSTALL        /usr/sap/X32/SYS
DIR_INSTANCE     /usr/sap/X32/DVEBMGS32
DIR_LIBRARY      /usr/sap/X32/DVEBMGS32/exe
DIR_LOGGING     /usr/sap/X32/DVEBMGS32/log
DIR_MEMORY_INSPECTOR   /usr/sap/X32/DVEBMGS32/data
DIR_ORAHOME       /oracle/X32/102_64
DIR_PAGING                            /usr/sap/X32/DVEBMGS32/data
DIR_PUT                            /usr/sap/X32/put
DIR_PERF                            /usr/sap/tmp
DIR_PROFILE      /usr/sap/X32/SYS/profile
DIR_PROTOKOLLS     /usr/sap/X32/DVEBMGS32/log
DIR_REORG                          /usr/sap/X32/DVEBMGS32/data
DIR_ROLL                          /usr/sap/X32/DVEBMGS32/data
DIR_RSYN                            /usr/sap/X32/DVEBMGS32/exe
DIR_SAPHOSTAGENT     /usr/sap/hostctrl
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DIR_SETUPS                           /usr/sap/X32/SYS/profile
DIR_SORTTMP     /usr/sap/X32/DVEBMGS32/data
DIR_SOURCE     /usr/sap/X32/SYS/src
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If Statement in java.awt paint

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}    // end of Bmi classI have written the above code to calculate someones BMI (Body Mass Index). Basically as you can see it recieves a weight and height from the user and calculates the rest. But whilst that good I would like to know how I can make it tell the user something to the effect of "Your overweight" or "Your underweight". The if statement runs like this:
if (wt > max)This forum doesn't quite handle <> properly. The greater and less than symbols. So above you will see > this is the html character code for a greater than symbol so please read it as such.
And then if wt is greater than max then it will say "Your overweight".
But I can't figure out how to include it in the above program. Becuase it won't run in paint, atleast it won't the way I have done it previously. So can you think of any other ways?
Help much appreciated,
Simon

Thanks very much that works well.
Simon
My code now looks like this: import java.applet.Applet; //bring in the applet class
import java.awt.*;             //bring in the graphics class
import java.awt.event.*;      //bring in the event class
import java.text.DecimalFormat;    //bring in the decimal format class
import java.lang.Float;       //bring in the float class
public class Bmi extends Applet implements ActionListener {   //begin program and start ActionListener
Label weight, height;    //define Label variable
TextField weighttext, heighttext;    //define TextField variables
Button calculate;     //define button variables
float index, wt, ht, max, min;    //define float variables
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public void init() {    //begin init()
weight = new Label("Please enter your weight in Kg. (2 decimal places): ");   //define content of Label weight
weighttext = new TextField(6);            //define size of TextField
height = new Label("Please enter your height in Metres (2 decimal places): ");   //define content of Label height
heighttext = new TextField(5);    //define size of TextField
calculate = new Button("Calculate!!");       //define content of Button
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add(weighttext);   //add TextField weighttext to the GUI
add(height);      //add Label height to the GUI
add(heighttext);     //add TextField heighttext to the GUI
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wt = 0;     //reset wt to 0
index = 0; //reset index to 0
ht = 0;      //reset ht to 0
max = 0;      //reset max to 0
min = 0;    //reset min to 0
public void actionPerformed( ActionEvent e ) {   //run upon return of button
wt = Float.parseFloat(weighttext.getText()); //convert weighttext from String to Float
ht = Float.parseFloat(heighttext.getText());    //covert heighttext from String to Float
repaint();     //refresh paint area
public float indexer() //begin indexer method
    float ind;    //delare local variable ind
    ind = wt/(ht*ht);      //perform calculation
    return ind;    //make indexer() the value of variable ind
} // end of indexer method
public float maxWeight() //begin maxWeight method
    float maxwt;    //declare local variable maxwt
    final float UPPER = 25.0f;   //declare variable UPPER as a float with a decimal value of 25.0
    maxwt = UPPER*ht*ht;      //perform calculation
    return maxwt;          //make maxWeight() the value of variable maxwt
} // end of maxWeight method
public float minWeight()   //begin minWeight method
    float minwt;    //declare local variable minwt
    final float LOWER= 20.0f;   //declare variable LOWER as a float with a decimal value of 20.0
    minwt = LOWER*ht*ht;    //perform calculation
    return minwt;      //make minWeight() the value of variable minwt
} // end of minWeight method
public void you(Graphics g)
String statement;
if(wt > max) statement="You are very fat";
else if(wt < min) statement="You are very thin";
else statement="You are in the recommended weight range for your height";
g.drawString(statement, 20,210);
public void paint(Graphics g)    //begin paint method, define g as Graphics
    you(g);
    index=indexer();   //covert method indexer() to variable index
    max=maxWeight();      //convert method maxWeight() to variable max
    min=minWeight();     //convert method minWeight() to variable min
    g.setFont(new Font("Verdana", Font.ITALIC, 15));    //define font, weight and size
    g.setColor(new Color(90,90,90));     //set new colour
    g.drawRect(5,100,300,75);      //define size of rectangle
    g.setColor(new Color(255,107,9));   //set new colour
    g.drawString("BMI is " + fmt2.format(index) + " for " + fmt2.format(wt) + "kg",20,120);   //create string in paint, define its on screen position
    g.drawString("Maximum bodyweight is " + fmt2.format(max) + "kg", 20,140);   //create string in paint, define its on screen position
    g.drawString("Minimum bodyweight is " + fmt2.format(min) + "kg", 20,160);     //create string in paint, define its on screen position
} // end of paint method
}    // end of BmiThanks again,
Simon

SSO java sample application problem

Hi all,
I am trying to run the SSO java sample application, but am experiencing a problem:
When I request the papp.jsp page I end up in an infinte loop, caught between papp.jsp and ssosignon.jsp.
An earlier thread in this forum discussed the same problem, guessing that the cookie handling was the problem. This thread recommended a particlar servlet , ShowCookie, for inspecting the cookies for the current session.
I have installed this cookie on the server, but don't see anything but one cookie, JSESSIONID.
At present I am running the jsp sample app on a Tomcat server, while Oracle 9iAS with sso and portal is running on another machine on the LAN.
The configuration of the SSO sample application is as follows:
Cut from SSOEnablerJspBean.java:
// Listener token for this partner application name
private static String m_listenerToken = "wmli007251:8080";
// Partner application session cookie name
private static String m_cookieName = "SSO_PAPP_JSP_ID";
// Partner application session domain
private static String m_cookieDomain = "wmli007251:8080/";
// Partner application session path scope
private static String m_cookiePath = "/";
// Host name of the database
private static String m_dbHostName = "wmsi001370";
// Port for database
private static String m_dbPort = "1521";
// Sehema name
private static String m_dbSchemaName = "testpartnerapp";
// Schema password
private static String m_dbSchemaPasswd = "testpartnerapp";
// Database SID name
private static String m_dbSID = "IASDB.WMDATA.DK";
// Requested URL (User requested page)
private static String m_requestUrl = "http://wmli007251:8080/testsso/papp.jsp";
// Cancel URL(Home page for this application which don't require authentication)
private static String m_cancelUrl = "http://wmli007251:8080/testsso/fejl.html";
Values specified in the Oracle Portal partner app administration page:
     ID: 1326
     Token: O87JOE971326
     Encryption key: 67854625C8B9BE96
     Logon-URL: http://wmsi001370:7777/pls/orasso/orasso.wwsso_app_admin.ls_login
     single signoff-URL: http://wmsi001370:7777/pls/orasso/orasso.wwsso_app_admin.ls_logout
     Name: testsso
     Start-URL: http://wmli007251:8080/testsso/
     Succes-URL: http://wmli007251:8080/testsso/ssosignon.jsp
     Log off-URL: http://wmli007251:8080/testsso/papplogoff.jsp
Finally I have specified the cookie version to be v1.0 when running the regapp.sql script. Other parameters for this script are copied from the values specified above.
Unfortunately the discussion in the earlier thread did not go any further but to recognize the cookieproblem, so I am now looking for help to move further on from here.
Any ideas will be greatly appreciated!
/Mads

Pierre - When you work on the sample application, you should test the pages in a separate browser instance. Don't use the Run Page links from the Builder. The sample app has a different authentication scheme from that used in the development environment so it'll work better for you to use a separate development browser from the application testing browser. In the testing browser, to request the page you just modified, login to the application, then change the page ID in the URL. Then put some navigation controls into the application so you can run your page more easily by clicking links from other pages.
Scott

SSO between a Java EE application (Running on CE) and r/3 backend

Hi All,
Over the past few days I have been trying to implement a SSO mechanism between NW CE Java Apps and R/3 backend without any success. I have been trying to use SAP logon tickets for implementing SSO.
Below is what I need:
I have a Java EE application which draws data from R/3 backend and does some processing before showing data to the users. As of now the only way the Java App on CE authenticates to r/3 backend is by passing the userid and pwds explicitly. See sample authentication code below:
BindingProvider bp = (BindingProvider) myService;
Map<String,Object> context = bp.getRequestContext();
context.put(BindingProvider.USERNAME_PROPERTY, userID);
context.put(BindingProvider.PASSWORD_PROPERTY, userPwd);
Now this is not the way we want to implement it. What we need is when the user authenticates to CE ( using CE's UME) CE issues a SAP logon ticket to the user. This ticket should be used to subsequently login to other system without having to pass the credentials. We have configured the CE and Backend to use SAP logon tickets as per SAP help.
What I am not able to figure out is: How to authenticate to SAP r/3 service from the java APP using SAP logon tickets. I couldnt find any sample Java code on SAP help to do this. (For example the above sample code authenticates the user by explicitly passing userid and pwd, I need something similar to pass a token to the backend)
Any help/pointers on this would be great.
Thanks,
Dhananjay

Hi,
Have you imported the java certificate into R/3 backend system ? if so.
Then just go to backend system and check on sm50 for each applicaion instance of any error eg.
SM50-> Display files (ICON) as DB symbol with spect.(cntrlshiftF8)
You will get logon ticket details.
with thanks,
Rajat

'Unable to Launch Application Error' - Java Web Start Running Under MS IIS.

I am attempting to render the following .jnlp in MS IE:
<?xml version="1.0" encoding="utf-8"?>

<jnlp
   codebase="http://localhost/LottoMadness/"
   href="LottoMadness.jnlp">
   <information>
     <title>LottoMadness Application</title>
     <vendor>Rogers Cadenhead</vendor>
     <homepage href="http://localhost/LottoMadness/"/>
     <icon href="lottobigicon.gif"/>
   </information>
   <resources>
     <j2se version="1.5"/>
     <jar href="LottoMadness.jar"/>
   </resources>
   <application-desc main-class="LottoMadness"/>
</jnlp>I've deployed the .jnlp, .gif, and .jar to MS IIS, running locally on my PC.
When I attempt to render the .jnlp in IE I obtain an 'Application Error' window stating 'Unable to Launch Application'. Clicking details gives me:
com.sun.deploy.net.FailedDownloadException: Unable to load resource: http://localhost/LottoMadness/LottoMadness.jnlp
     at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getResource(Unknown Source)
     at com.sun.deploy.net.DownloadEngine.getResource(Unknown Source)
     at com.sun.javaws.Launcher.updateFinalLaunchDesc(Unknown Source)
     at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
     at com.sun.javaws.Launcher.launch(Unknown Source)
     at com.sun.javaws.Main.launchApp(Unknown Source)
     at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
     at com.sun.javaws.Main$1.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)I have configured MS IIS for Web Start, by setting the Extension/Content Type fields to .jnlp and application/x-java-jnlp-file.
(The .jnlp is basically from 'Programming with Java in 24 Hours', as this is the book I am learning Java from.)

AndrewThompson64 wrote:
I am not used to seeing references to a local server that do not include a port number.
E.G. http://localhost:8080/LottoMadness/
I have deployed the following HTML (HelpMe.html) to the web server:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
     <title>Untitled</title>
</head>
<body>
Help Me!
</body>
</html>When I attempt to render the URL in IE, I see the page just fine. The URL is use is:
http://localhost/LottoMadness/HelpMe.htmlSo, I think my web server setup and usage is ok.
>
As an aside, what happens if (your MS IIS is running and) you click a direct link to..
[http://localhost/LottoMadness/LottoMadness.jnlp|http://localhost/LottoMadness/LottoMadness.jnlp]
When I click this link I get the error and exception I cited in my previous post.

Partner Application written in other language than PL/SQL and Java

I have an application written in another language than PL/SQL or Java. I want to integrate this application as an Partner apps where I use the same user repository as Portal.
Can I integrate the application by calling a stored PL/SQL-procedure based on the PLSQL SSO APIs examples that authenticates the user based on the username/password in portal and redirects the user to the application ?
Are there any examples / references where this has been done ?
Jens

Check out the PDK referance for URL-Services, which allow you to integrate with any web based service/content.
http://portalstudio.oracle.com/servlet/page?_pageid=350&_dad=ops&_schema=OPSTUDIO

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