Strange problem creating input stream in Java 1.4

I need to create an InputStream from a file that is in the same directory as the class App. But this code (in App)
File file = new File(App.class.getResource("filename").getFile());
InputStream is = new InputStream(file);
throws this exception:
java.io.FileNotFoundException: c:\my%20programs\filename (The system can not find the file specified)
The exception is only thrown in jdk1.4. In jdk1.3 everything works perfectly(as it should). What seems to happen is that the space in the directory name "my programs" is turned into "%20". This problem doesn't arise if directory names in the file path don't contain spaces or if I use the File(String) constructor.
Can someone, please, explain this anomaly or, at least, how I can get an InputStream in this situation without using the Class.getResource().getFile() call.

Did you try
InputStream is = new InputStream(file.getCanonicalPath ());
instead of
InputStream is = new InputStream(file);
It might work.

Similar Messages

Problem reading input stream of urlconnection within portal

Hi,
This may be a generic server issue rather than portal but since it's my portal app that's displaying the problem I'll post it here.
Part of my Portal attempts to POST to a remote server to retrieve some search results.
In environments A & B (both standalone instances) this works fine.
In environment C this works on the managed instances in the cluster but not the admin instance.
In environment D (again standalone) it fails, but if I add a managed instance it works from the managed instance.
The problem I'm seeing is that I get a stuck thread and the thread dump shows it is blocked attempting to read the resulting input from a urlconnection. (Using a buffered input stream).
I've copied the code to a standalone class that runs fine from the same server(s). I've pasted this code below, the contents of the test() method were copied directly from my webapp (urls changed here for clarity).
Does anyone know of any securitymanager issues that may cause this?
Or anything else for that matter?
Code sample:
package src.samples;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
public class POSTTest {
     public static boolean test()
     URL url = null;
     try {
     url = new URL
("http://hostx:80/myapp/search.html");
     catch (MalformedURLException e)
     e.printStackTrace();
     return false;
     URLConnection urlConn;
     DataOutputStream printout;
     BufferedReader input;
     urlConn = null;
     try {
     urlConn = url.openConnection();
     catch (IOException e)
     e.printStackTrace();
     return false;
     // Let the run-time system (RTS) know that we want input.
     urlConn.setDoInput (true);
     // Let the RTS know that we want to do output.
     urlConn.setDoOutput (true);
     // No caching, we want the real thing.
     urlConn.setUseCaches (false);
     // Specify the content type.
     urlConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
     // Send POST output (this is a POST because we write then read as per the JDK Javadoc)
     printout = null;
     String body = "";
     try {
     System.out.println("url=" + url.toString());
     printout = new DataOutputStream (urlConn.getOutputStream ());
     String content = "param1=A&param2=B&param3=C&param4=D&param5=E";
     System.out.println("urlParams= " + content);
     printout.writeBytes (content);
     System.out.println("written parameters");
     printout.flush ();
     System.out.println("flushed parameters");
     printout.close ();
     System.out.println("closed parameter stream");
     // <b>Get response data - this is where it blocks indefinitely</b>
     input = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
     System.out.println("got input");
     String str;
     while (null != ((str = input.readLine()))) {
     body = body + str + "\n";
     System.out.println("read input:");
     System.out.println(body);
     input.close ();
     System.out.println("closed input stream");
     catch (IOException e) {
     System.out.println("IOException caught: read failed");
     e.printStackTrace();
     return false;
     return true;
     * @param args
     public static void main(String[] args) {
          System.out.println("Test result= " + test());

In your recuperar() method, read the FTP input stream into a byte array. (You can do that by copying it to a ByteArrayOutputStream and then getting the byte array from that object.) Then, return a ByteArrayInputStream based on those bytes. After you call completePendingCommand(), of course.
That's one way.
PC²

Strange problem with procedure calling from Java!!!

I am using Oracle 8.1.7 Database, Oracle 8i Application server and WInNT platform.
I am facing a strange problem while inserting a String from Java to Oracle database through Procedure. When i am passing the String containing single quotes(e.g "test' and ' and ' end") and without including any escape charactes for the single quotes I am passing the String by the setString() method then the procedure is inserting the single quotes without any problem.
Of course when I am independently executing the procedure thru backend and passing the same String containing single quotes then the error message comes as " quoted string not properly terminated" which is justified,
I have even printed the String in a file through sql on the runtime of the procedure when it is called by Java and then also the String contatins single quotes that is passed through java without any escape characters. This means that procedure is inserting the String into the column without any hassles!!!!!
Can anyone tell me what may be the reason for the peculiar behaviour of Database?
Thanks

Sri Ram wrote:
No actually in the documentation of oracle database 10g plsql user guide, oracle explains the concept of declaring nested plsql subprograms he gave the example but in the main block he gave NULL, without calling any procedure.Can you provide a link to where in the Oracle documentation you saw this example?
in order to know which procedure is getting first i added a dbms statement in both the functions and called the function from the main block.
the original example was
DECLARE
PROCEDURE proc1(number1 NUMBER); -- forward declaration
PROCEDURE proc2(number2 NUMBER) IS
BEGIN
proc1(number2); -- calls proc1
END;
PROCEDURE proc1(number1 NUMBER) IS
BEGIN
proc2 (number1); -- calls proc2
END;
BEGIN
NULL;
END;
---------------------------------------------------------------------------------------------------------The original example is equivalent to:
BEGIN
NULL;
END;That is, the main block never calls anything. Either you are misinterpreting the Oracle documentation, or if the example came from a non-Oracle source as I suspect, the author of that example has a deeply flawed understanding of how programming works.
John

Problem creating inputs, outputs and text in Scilab Script Block

I have recently installed the Labview to Scilab Gateway. I am running Labview 11.0 and Scilab 5.3.3. The example files run properly, However, when I try to define any inputs, or outputs, there is no option to add the ports. The block also ignores any text I type in it or copy to it. I have been trying this on a blank vi.
Solved!
Go to Solution.

Hi Ronny,
I have a few more questions to help us debug this issue. You said you tried the same right-click procedure to create inputs and outputs on a normal script block and it worked as expected. What specifically do you mean by a "normal script block"?
How did you drop the empty Scilab script node on a blank VI? Did you drop it from a palette or paste it from another VI?
Can you post an image of your Help >> About LabVIEW screen (feel free to obscure your name, company, and license number)? If not, can you provide the LabVIEW version number specified from that screen? There have been a few patches to LabVIEW 2011 and it will help us to reproduce the issue if we know exactly which version you have. Also on that screen, do you have LabVIEW Base, Full, or Professional (or maybe an Evaluation or Student edition)? The Scilab script node will not work in LabVIEW Base and the right-click menu will look as you describe. You can verify your LabVIEW activation in the NI License Manager.
Do you have any other versions of LabVIEW installed on your computer? Is LabVIEW 2011 the most recent LabVIEW you installed? How about previous versions of Scilab? Do any previous versions remain or did you remove a previous version of Scilab AFTER installing Scilab 5.3.3?
Grant M.
Senior Software Engineer | LabVIEW Tablets | National Instruments

Problem using Input stream reader - unable to read values in variables

Hi,
I have a program that need to input an access code. If the code is correct a message appears "Valid access code". Till this part, the codes works fine.
The problem is here:
If not correct a prompt is displayed asking the user whether he want to input another code. Whether Y/N, the program always ask for the input. Can anyone tell me what's the problem in the code??
import     java.io.*;
public     class     testwhile
     public static void main(String args[])
          //initialisation for input
          InputStreamReader stdin =
                    new InputStreamReader(System.in);
          BufferedReader console =
                    new BufferedReader(stdin);
          //array to store copier access codes and associated max number of copies
          int[][] arr_copier = new int[3][2];
          int     i = 0;
          String c_code;
          int p_validrow; //use to input copier access code
          String     p_reply,p_tryagain, p_found;
          int copier_code;
          //assigning values to array
          arr_copier[0][0] = 450101;
          arr_copier[1][0] = 450202;
          arr_copier[2][0] = 430303;
          arr_copier[0][1] = 500;
          arr_copier[1][1] = 2000;
          arr_copier[2][1] = 100;
          p_tryagain ="N";
          p_found = "N";
          p_validrow = 0;
          c_code = "0";
          try
          do
                    System.out.print("Input code: ");
                    c_code = console.readLine();
                    copier_code = Integer.parseInt(c_code);
                    for (int r=0;r<=2;r++)
                         // System.out.println(r + " = " + arr_copier[r][0]);
                         if (copier_code == arr_copier[r][0])
                              System.out.println("Value found");
                              p_found = "Y";
                              p_validrow = r;
                              break; // to know row number so as to pick the number of copies for the selected access code
                         else
                              System.out.println("NOT found");
                              p_found = "N";
                    if (p_found == "N")
                         System.out.println("Invalid access code");
                         System.out.print("Do you want to try another code?");
                         p_tryagain = console.readLine();
                    else
                         System.out.println("VALID access code");
                         p_tryagain = "N";
               p_tryagain = p_tryagain;
               System.out.println("try again" + p_tryagain);
          while (p_tryagain != "N");
          catch(IOException ioex)
                    System.out.println("Error Exception" + ioex);
}

Never compare Strings using Object equality or inequality ("==" resp. "!=").
Use [url http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html#equals(java.lang.Object)]String#equals (or [url http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html#indexOf(java.lang.String)]String#indexOf or [url http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html#matches(java.lang.String)]String#matches).
Please use code tags when posting code. This means wrapping your text between [code[/b]][[/b]code] tags. See the [url http://forum.java.sun.com/help.jspa?sec=formatting]Formatting tips.

Hi problem in Input stream - Junk character

Hi
We are developing a application in which a java servlet reads a request from a xls file
The request is sent from a macro written in excel file.
The request sends a xml file content in byte form.
This we read in the servlet as a datainputstream.
While printing we encounter a problem
After every valid character a junk character is also getting printed(it is in form of a square).
example
< (junk) x (junk) m (junk).............
Can somebody help how to solve this
Thanks
Ottran
Message was edited by:
Ottran

Sounds to me like the XML is being encoded in some version of UTF-16, but you're ignoring that and acting as if it's in some single-byte encoding. I would certainly question the use of DataInputStream to read it, as that class has assumptions built into it which you could easily misuse.
And "printing" is a term that could use a whole lot of clarification, especially in the context of a Web application.

Having a strange problem. When streaming music and or music videos to my Apple TV from my Mac sometimes the Apple TV seems to loose the stream and the only way I can get it going again is to turn off home share on my Mac and then turn it on again.

I do not have this problem when streaming music/music videos from my IPAD or my Iphone

The speed is probably due to your network, it is quite indirect for mirror/AP.
For the audio, you cannot split audio and video so the audio will play where the video does.
Jules

Oracle Blob using Java help (Error: JVM_recv in socket input stream read )

I am trying to insert a record with Blob column (size of image 'mg.jpg' about 15KB) and I get the runtime error:
[java] java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
[java]      at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
[java]      at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
[java]      at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:333)
[java]      at oracle.jdbc.driver.OracleStatement.executeNonQuery(OracleStatement.java:2061)
[java]      at oracle.jdbc.driver.OracleStatement.doExecuteOther(OracleStatement.java:1940)
[java]      at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2709)
[java]      at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:589)
[java]      at test.ProvisioningParser.TestBlob.main(Unknown Source)
This is what code looks like: I am not sure what's wrong, any help appreciated. Thanks!
     try{
               Class.forName("oracle.jdbc.driver.OracleDriver");
               con = DriverManager.getConnection("jdbc:oracle:thin:@VALUED-20606295:1521:dbbook","jvending","jvending");
               java.util.zip.ZipInputStream zip = new java.util.zip.ZipInputStream(new java.io.FileInputStream(new java.io.File("D:\\work\\mywork\\source\\test\\ProvisioningParser\\test.par"))) ;
               int len = 0 ;
               java.util.zip.ZipEntry entry = null;
               do{
                    entry = zip.getNextEntry();
                    if (entry != null){
                         if (entry.getName().equalsIgnoreCase("mg.jpg")){
                              len = (int)entry.getSize();
                              break;
               }while(entry!=null) ;
               stmt = con.prepareStatement( "Insert into icon (parid, clientbundleid, id, iconfile ) values ( ?,?,?,?)"
                     stmt.setString(1,"101");
                     stmt.setString(2,"101");
                     stmt.setInt(3,1);
                     stmt.setBinaryStream( 4, zip, len);
               stmt.setQueryTimeout(0);
               stmt.executeUpdate();
               con.close();
          catch(Exception e){
               e.printStackTrace();
          }Thanks,
Rashmi

As a guess what you are doing with that zip stuff is very odd.
You do realize that it is just going to put some binary data into the blob right? And the methods that is going to use will not necessarily create a 'complete' zip file?
If you want a zip file then just load the file, dont use the zip classes.
And if you want part of a zip file, (and want to store the parts as a zip) then extract it from the file and create another zip entity using a byte stream rather than a file.
Finally I suspect your error with the blob occurs because you do not close the statement. But at any rate you should figure out how to do the blob code independent of the zip stuff.
And what oracle driver version are you using? Some of the older ones need oracle specific handling for blobs.

ImageIO - javax.imageio.IIOException: Can't get input stream from URL

Hi,
I'm developing a program which accesses a given URL of an image and saves it to a file. However when I try this I get the following error:
javax.imageio.IIOException: Can't get input stream from URL!
     at javax.imageio.ImageIO.read(Unknown Source)
     at ImageSave.main(ImageSave.java:12)
Caused by: java.net.ConnectException: Connection timed out: connect
     at java.net.PlainSocketImpl.socketConnect(Native Method)
     at java.net.PlainSocketImpl.doConnect(Unknown Source)
     at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
     at java.net.PlainSocketImpl.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at sun.net.NetworkClient.doConnect(Unknown Source)
     at sun.net.www.http.HttpClient.openServer(Unknown Source)
     at sun.net.www.http.HttpClient.openServer(Unknown Source)
     at sun.net.www.http.HttpClient.<init>(Unknown Source)
     at sun.net.www.http.HttpClient.New(Unknown Source)
     at sun.net.www.http.HttpClient.New(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
     at java.net.URL.openStream(Unknown Source)
     ... 2 moreThe internet connection I am using uses a proxy server and I think this is where the problem lies. I'm using Eclipse version 3.3 and I've tried changing the network settings to use the proxy's hostname and port but this still isn't working. I've also tried using System.setProperty("http.proxyHost", "hostname") and System.setProperty("http.proxyPort", "port") but that hasn't worked for me either. Below is my class in full.
import java.awt.image.*;
import javax.imageio.*;
import java.io.*;
import java.net.*;
public class ImageSave
     public static void main(String args[])
          try {
               URL url = new URL("http://www.example.com/image.jpg");
               BufferedImage image = ImageIO.read(url);
               ImageIO.write(image, "JPG", new File("image.jpg"));
          catch (Exception e) {
               e.printStackTrace();
}The error occurs with the line: BufferedImage image = ImageIO.read(url);
I have tried looking for a way to change how this specific method accesses the internet (e.g: a Proxy parameter with URLConnection) but there doesn't seem to be any.
Any help or suggestions would be greatly appreciated.
-Robert

Ah, that worked fine. I had thought of using that earlier but I was under the impression that the input stream would be HTML rather than an actual image. Not sure why.. Anyway, thanks very much for your help!
Here is the new code with your suggested revisions and a URLConnection to get the input stream:
import java.awt.image.*;
import javax.imageio.*;
import java.io.*;
import java.net.*;
public class ImageSave
    public static void main(String args[])
        try {
             // This is where you'd define the proxy's host name and port.
             SocketAddress address = new InetSocketAddress(hostName, port);
             // Create an HTTP Proxy using the above SocketAddress.
             Proxy proxy = new Proxy(Proxy.Type.HTTP, address);
             URL url = new URL("www.example.com/image.jpg");
             // Open a connection to the URL using the proxy information.
             URLConnection conn = url.openConnection(proxy);
             InputStream inStream = conn.getInputStream();
             // BufferedImage image = ImageIO.read(url);
             // Use the InputStream flavor of ImageIO.read() instead.
             BufferedImage image = ImageIO.read(inStream);
             ImageIO.write(image, "JPG", new File("image.jpg"));
        catch (Exception e) {
             e.printStackTrace();
}Edited by: Ragnarob on Apr 21, 2009 2:49 AM

Unexpected end of ZLIB input stream error while compiling

Hello
I am getting errors when i run RMIC and JAR apps in the same window, i've tried to close and open the input stream in between, tried delaying between the two , tried /I paramaeter, any one ?
Rmic stage pass OK
but i get Unexpected end of ZLIB input stream exception i some of the file on the jar stage :
Main batch :
start /B %SWIFT_LOCAL_HOME%\scripts\rmicAll.bat
start /B %SWIFT_LOCAL_HOME%\scripts\create_jar.bat
Jar exception :
adding: CVS/(in = 0) (out= 0)(stored 0%)
adding: CVS/Entries(in = 383) (out= 168)(deflated 56%)
adding: CVS/Repository(in = 13) (out= 15)(deflated -15%)
adding: CVS/Root(in = 60) (out= 60)(deflated 0%)
java.io.EOFException: Unexpected end of ZLIB input stream
at java.util.zip.InflaterInputStream.fill(InflaterInputStream.java:223)
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:141)
at java.util.zip.ZipInputStream.read(ZipInputStream.java:146)
at sun.tools.jar.Main.update(Main.java:508)
at sun.tools.jar.Main.run(Main.java:184)
at sun.tools.jar.Main.main(Main.java:1022)
C:\Eclipse_Workspace\Swift\scripts>date /T 1>>C:\Eclipse_Workspace\Swift\swift_build.txt
C:\Eclipse_Workspace\Swift\scripts>time /T 1>>C:\Eclipse_Workspace\Swift\swift_build.txt
C:\Eclipse_Workspace\Swift\scripts>echo Swift.jar Build Time : 1>C:\Eclipse_Workspace\Swift\swift_build.txt
C:\Eclipse_Workspace\Swift\scripts>"C:\Program Files\Java\jdk1.6.0_02\bin\jar" -uvf C:\Eclipse_Workspace\Swift\jars\swift.jar -C C:\Eclipse_Workspace\Swift swift_build.txt
java.io.EOFException: Unexpected end of ZLIB input stream
at java.util.zip.InflaterInputStream.fill(InflaterInputStream.java:223)
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:141)
at java.util.zip.ZipInputStream.read(ZipInputStream.java:146)
at sun.tools.jar.Main.update(Main.java:508)
at sun.tools.jar.Main.run(Main.java:184)
at sun.tools.jar.Main.main(Main.java:1022)

You seem to be adding the contents of CVS directories to the jar file. CVS directories contain internal information used by CVS. This suggests to me that you are either deliberately doing something really really strange, or you are doing something stupid out of ignorance.
The CVS directories suggest you are making a jar from your source code. Generally you compile the source code 'tree' and place the output (.class files etc) in another tree and create the jar from that second tree.
And PaulMiner is correct, you'll definitely need to change 'start' to 'call'. Do that first, then take a look at what is source code, and what it is that you want in your jar file and make sure it is all sensible, I suspect it isn't.

How do I return an input stream from a text file

Suppose there's a class with methods..
one of the methods is something like..
public int value() and has a return statement at the end obviously for returning an int value..
Another method reads a text file and creates an input stream..
Scanner data = new Scanner(new File(input.next()));
I want to return the data when I do a call to this method, but I'm not sure what the method heading would look like..

flounder wrote:
Are we supposed to magically know what those errors are? Do you think that copying and pasting the exact error messages and indicating the lines they occur on would be useful to us?Sorry about that..
I've replicated the same code below; and put the number of the line where the error is.
+cannot find symbol variable read     [line 21]+
+cannot find symbol variable read     [line 23]+
+cannot find symbol variable read     [line 29]+
+cannot find symbol variable read     [line 31]+
+cannot find symbol variable inputStream     [line 44]+
+calculate() in textInput cannot be applied to (java.util.Scanner)     [line 57]+
the reason I have the _______ for the createInputStream() method is because I'm not really sure what the heading type should be to return the input stream.
import java.io.*;
import java.util.*;
public class textInput
          public void requestFileName()
               Scanner input = new Scanner(System.in);
               System.out.print("Enter file name: ");
          public _______ createInputStream() throws FileNotFoundException
               Scanner input = new Scanner(System.in);
               Scanner read = new Scanner(new File(input.next()));
               return read;
          public void calculate() throws IOException
21           double max;
               double min;
23            int count = 0;
               double total = 0;
               if (read.hasNextDouble())
                    double temp = read.nextDouble();
29                 max = temp;
                    min = temp;
31                 count++
                    total += temp;
                    while (read.hasNextDouble())
                         double current = read.nextDouble();
                         count++;
                         min = Math.min(current, min);
                         max = Math.max(current, max);
                         total += current;
               System.out.println("Max of: " + max);
               System.out.println("Min of: " + min);
44            System.out.println("Average of " + total/count);
          public void close() throws IOException
               inputStream.close();
          public static void main(String[] args)
               textInput run = new textInput();
               try
57                 run.requestFileName();
                    run.createInputStream();
                    run.calculate();
                    run.close();
               catch(FileNotFoundException e)
                    System.out.println("File not found.");
                    System.exit(0);
               catch(IOException e)
                    System.out.prinln("File not found.");
                    System.exit(0);
}

Cached input stream?

the problem i got is that i got a lot of processes reading the same amount of bytes (6k) from disk at the same time. this will lead to the point where the IO starts blocking since it has to serve too much at once. a solution would be rading out larger chunks at once (like 100k) using something like a CachedImputStream. the CachedInputStream could be chained with a normal InputStream that reads the 6k out of it. this way the disks searches could be reduced a lot.
i was wondering if there is something like a cached input stream for java already or if i have to wirte one by myself? (note: a BufferedInputStream wouldn't solve the problem since it only tries to keep the buffer full in memory - i can't specify how many bytes to read from disk at once)

i can't specify how many bytes to read from disk at onceDo you mean the following method does not work?
read(byte[] bytes, int start, int length)?
You will probibly find that the OS reads a fixed size e.g. 8K, 16K, 32K or 64K depending on the block size of the disk regardles sof what you set. Using this option reduced the number of calls from your program to the OS, how the OS accesses the disk cannot be controlled in Java. (Your program can only provide a hint)
If performance is an issue, either reduce the number of concurrent requests or use higher performing disks such as SCSI or multiple SCSI drives mirrored/stripped.

Is this the best way to measure the speed of an input stream?

Hi guys,
I have written the following method to read the source of a web page. I have added the functionality to calculate the speed.
public StringBuffer read(String url)
        int lc = 0;
        long lastSpeed = System.currentTimeMillis();
        //string buffer for reading in the characters
        StringBuffer buffer = new StringBuffer();
        try
            //try to set URL
            URL URL = new URL(url);
            //create input streams
            InputStream content = (InputStream) URL.getContent();
            BufferedReader in = new BufferedReader(new InputStreamReader(content));
            //in line
            String line;
            //while still reading in
            while ((line = in.readLine()) != null)
                lc++;
                if ((lc % _Sample_Rate) == 0)
                    this.setSpeed(System.currentTimeMillis() - lastSpeed);
                    lastSpeed = System.currentTimeMillis();
                //add character to string buffer
                buffer.append(line);
        //catch errors
        catch (MalformedURLException e)
            System.out.println("Invalid URL - " + e);
        catch (IOException e)
            System.out.println("Invalid URL - " + e);
        //return source
        return buffer;
    }Is it faster to read bytes rather than characters?
This method is a very important part of my project and must be as quick as possible.
Any ideas on how I can make it quicker? Is my approach to calculating the speed the best way to it?
Any help/suggestions would be great.
thanks
alex

sigh
reading bytes might be slightly faster than reading chars, since you don't have to do the conversion and you don't have to make String objects. Certainly, you don't want to use readLine. If you're using a reader, use read(buf, length, offset)
My suggestion:
Get your inputstream, put a bufferedInputStream over it, and use tje loadAll method from my IOUtils class.
IOUtils is given freely, but please do not change its package or submit this as your own work.
====
package tjacobs;
import java.awt.Component;
import java.io.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.swing.JOptionPane;
public class IOUtils {
     public static final int DEFAULT_BUFFER_SIZE = (int) Math.pow(2, 20); //1 MByte
     public static final int DEFAULT_WAIT_TIME = 30 * 1000; // 30 Seconds
     public static final int NO_TIMEOUT = -1;
     public static final boolean ALWAYS_BACKUP = false;
     public static String loadTextFile(File f) throws IOException {
          BufferedReader br = new BufferedReader(new FileReader(f));
          char data[] = new char[(int)f.length()];
          int got = 0;
          do {
               got += br.read(data, got, data.length - got);
          while (got < data.length);
          return new String(data);
     public static class TIMEOUT implements Runnable {
          private long mWaitTime;
          private boolean mRunning = true;
          private Thread mMyThread;
          public TIMEOUT() {
               this(DEFAULT_WAIT_TIME);
          public TIMEOUT(int timeToWait) {
               mWaitTime = timeToWait;
          public void stop() {
               mRunning = false;
               mMyThread.interrupt();
          public void run () {
               mMyThread = Thread.currentThread();
               while (true) {
                    try {
                         Thread.sleep(mWaitTime);
                    catch (InterruptedException ex) {
                         if (!mRunning) {
                              return;
     public static InfoFetcher loadData(InputStream in) {
          byte buf[] = new byte[DEFAULT_BUFFER_SIZE]; // 1 MByte
          return loadData(in, buf);
     public static InfoFetcher loadData(InputStream in, byte buf[]) {
          return loadData(in, buf, DEFAULT_WAIT_TIME);
     public static InfoFetcher loadData(InputStream in, byte buf[], int waitTime) {
          return new InfoFetcher(in, buf, waitTime);
     public static String loadAllString(InputStream in) {
          InfoFetcher fetcher = loadData(in);
          fetcher.run();
          return new String(fetcher.buf, 0, fetcher.got);
     public static byte[] loadAll(InputStream in) {
          InfoFetcher fetcher = loadData(in);
          fetcher.run();
          byte bytes[] = new byte[fetcher.got];
          for (int i = 0; i < fetcher.got; i++) {
               bytes[i] = fetcher.buf;
          return bytes;
     public static class PartialReadException extends RuntimeException {
          public PartialReadException(int got, int total) {
               super("Got " + got + " of " + total + " bytes");
     public static class InfoFetcher implements Runnable {
          public byte[] buf;
          public InputStream in;
          public int waitTime;
          private ArrayList mListeners;
          public int got = 0;
          protected boolean mClearBufferFlag = false;
          public InfoFetcher(InputStream in, byte[] buf, int waitTime) {
               this.buf = buf;
               this.in = in;
               this.waitTime = waitTime;
          public void addInputStreamListener(InputStreamListener fll) {
               if (mListeners == null) {
                    mListeners = new ArrayList(2);
               if (!mListeners.contains(fll)) {
                    mListeners.add(fll);
          public void removeInputStreamListener(InputStreamListener fll) {
               if (mListeners == null) {
                    return;
               mListeners.remove(fll);
          public byte[] readCompletely() {
               run();
               return buf;
          public int got() {
               return got;
          public void run() {
               if (waitTime > 0) {
                    TIMEOUT to = new TIMEOUT(waitTime);
                    Thread t = new Thread(to);
                    t.start();
               int b;
               try {
                    while ((b = in.read()) != -1) {
                         if (got + 1 > buf.length) {
                              buf = expandBuf(buf);
                         buf[got++] = (byte) b;
                         int available = in.available();
                         if (got + available > buf.length) {
                              buf = expandBuf(buf);
                         got += in.read(buf, got, available);
                         signalListeners(false);
                         if (mClearBufferFlag) {
                              mClearBufferFlag = false;
                              got = 0;
               } catch (IOException iox) {
                    throw new PartialReadException(got, buf.length);
               } finally {
                    buf = trimBuf(buf, got);
                    signalListeners(true);
          private void setClearBufferFlag(boolean status) {
               mClearBufferFlag = status;
          public void clearBuffer() {
               setClearBufferFlag(true);
          private void signalListeners(boolean over) {
               if (mListeners != null) {
                    Iterator i = mListeners.iterator();
                    InputStreamEvent ev = new InputStreamEvent(got, buf);
                    //System.out.println("got: " + got + " buf = " + new String(buf, 0, 20));
                    while (i.hasNext()) {
                         InputStreamListener fll = (InputStreamListener) i.next();
                         if (over) {
                              fll.gotAll(ev);
                         } else {
                              fll.gotMore(ev);
     public static interface InputStreamListener {
          public void gotMore(InputStreamEvent ev);
          public void gotAll(InputStreamEvent ev);
     public static class InputStreamEvent {
          public int totalBytesRetrieved;
          public byte buffer[];
          public InputStreamEvent (int bytes, byte buf[]) {
               totalBytesRetrieved = bytes;
               buffer = buf;
          public int getBytesRetrieved() {
               return totalBytesRetrieved;
          public byte[] getBytes() {
               return buffer;
     public static void copyBufs(byte src[], byte target[]) {
          int length = Math.min(src.length, target.length);
          for (int i = 0; i < length; i++) {
               target[i] = src[i];
     public static byte[] expandBuf(byte array[]) {
          int length = array.length;
          byte newbuf[] = new byte[length *2];
          copyBufs(array, newbuf);
          return newbuf;
     public static byte[] trimBuf(byte[] array, int size) {
          byte[] newbuf = new byte[size];
          for (int i = 0; i < size; i++) {
               newbuf[i] = array[i];
          return newbuf;

Mac OS X MySQL Connect throws Unexpected end of input stream

With java version 1.4.2_05 I'm attempting to run an application which retrieves information from a MySQL database version 4.1 on Mac OS X Panther 10.3.6 The application operates without error on Windows and Linux using MySQL v4.0. Relevant Code appears below..
          private static final String DRIVER = "com.mysql.jdbc.Driver";
     private static final String URL = "jdbc:mysql://localhost:3306";
     boolean openConnection() throws SQLException, DatabaseException {
          try {
               if (con == null) {
                    StringBuffer sb = new StringBuffer(URL);
                    sb.append("/").append(getDatabase());
                    Class.forName(DRIVER);
                    /* Failure occurs here while calling getConnection on the
                    DriverManager class. */
                    con = DriverManager.getConnection(sb.toString(), getUser(), getPassword());
          } catch(SQLException sle) {
               sle.printStackTrace();
     } But on Mac X I'm seeing an exception thrown.
java.sql.SQLException: Communication link failure: java.io.IOException, underlying cause:
Unexpected end of input stream
** BEGIN NESTED EXCEPTION **
java.io.IOException
MESSAGE: Unexpected end of input stream
STACKTRACE:
java.io.IOException: Unexpected end of input stream
        at com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java:1096)
        at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:626)
        at com.mysql.jdbc.Connection.createNewIO(Connection.java:1562)
        at com.mysql.jdbc.Connection.<init>(Connection.java:491)
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
        at java.sql.DriverManager.getConnection(DriverManager.java:512)
        at java.sql.DriverManager.getConnection(DriverManager.java:171)I have checked to see that the proper permissions are established in the database. I've used the GRANT statement etc. It's unclear to me why I am having difficulty with the newer MySQL on Mac OS X. Any feedback is appreciated thanks.

I managed to solve this by having the MySQL server run as a service rather than attempting to start it via the application. So now the application can retrieve from the database without error.

ExecTask - java.io.EOFException: Unexpected end of ZLIB input stream

BOXI 3.1 FP 7 deployed on AIX environment with all the lang packs. Trying to install SP2 on AIX, when it comes to deploying the war files, AnalyticalReporting, the install encounters error. This error appears to be with size of the war file. Anyone came across this issue?
2010-03-30 10:10:00,633   Target - Target "expand_and_package" started.
2010-03-30 10:10:00,634   Delete - Deleting directory /export/home/Business_Objects/global/deployment/workdir/tomcat55/resources/web/AnalyticalReporting
2010-03-30 10:10:00,798    Mkdir - Created dir: /export/home/Business_Objects/global/deployment/workdir/tomcat55/resources/web/AnalyticalReporting
2010-03-30 10:10:00,828    Mkdir - Created dir: /export/home/Business_Objects/global/deployment/workdir/tomcat55/resources/AnalyticalReporting
2010-03-30 10:19:32,016 *ExecTask - java.io.EOFException: Unexpected end of ZLIB input stream
2010-03-30 10:19:32,016 ExecTask -      at java.util.zip.InflaterInputStream.fill(InflaterInputStream.java(Compiled Code))
2010-03-30 10:19:32,017 ExecTask -      at java.util.zip.InflaterInputStream.read(InflaterInputStream.java(Compiled Code))
2010-03-30 10:19:32,017 ExecTask -      at java.util.zip.ZipInputStream.read(ZipInputStream.java(Compiled Code))
2010-03-30 10:19:32,017 ExecTask -      at sun.tools.jar.Main.extractFile(Main.java(Compiled Code))
2010-03-30 10:19:32,017 ExecTask -      at sun.tools.jar.Main.extract(Main.java(Compiled Code))
2010-03-30 10:19:32,025 ExecTask -      at sun.tools.jar.Main.run(Main.java:228)
2010-03-30 10:19:32,025 ExecTask -      at sun.tools.jar.Main.main(Main.java:944)
2010-03-30 10:19:32,051 ExecTask - Result: 1
2010-03-30 10:19:32,162     Echo - Adding 'webiApplet/**' to the content to bundle with AnalyticalReporting's war file
2010-03-30 10:19:32,302      Jar - error while reading original manifest: Error opening zip file /export/home/Business_Objects/global/deployment/workdir/tomc
at55/application/AnalyticalReporting.war
2010-03-30 10:19:35,354      Jar - Building jar: /export/home/Business_Objects/global/deployment/workdir/tomcat55/application/AnalyticalReporting.war
2010-03-30 10:20:29,036      Zip - Building zip: /export/home/Business_Objects/global/deployment/workdir/tomcat55/resources/AnalyticalReporting.zip
2010-03-30 10:23:58,561    Mkdir - Created dir: /export/home/Business_Objects/global/deployment/workdir/tomcat55/resources/web/AnalyticalReporting/WEB-INF
2010-03-30 10:23:58,564     Copy - Copying 1 file to /export/home/Business_Objects/global/deployment/workdir/tomcat55/resources/web/AnalyticalReporting/WEB-I
NF
2010-03-30 10:23:58,597   Delete - Deleting directory /export/home/Business_Objects/global/deployment/workdir/tomcat55/resources/AnalyticalReporting
2010-03-30 10:35:00,636   Target - Target "expand_and_package" finished.

Hi,
Don't know which of this factors solved the problem:
1. Error server:
AIX 5.2
jdk 1.3.17 (minimum from docu: 1.3.11)
$ORACLE_HOME wasn't in the begining of $PATH
2. success server:
AIX 5.3
jdk 1.4.02
$ORACLE_HOME is now in the begining of $PATH
cheers Lao De

Strange problem creating input stream in Java 1.4

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