After an upgrade to XP and Java 1.6 one of our intranet apps is experiencing a problem when running a java applet in the browser. The java applet is a document ... |
I try to open a large number of files but after 5000 files or so I get
Exception in thread "Main" java.io.IOException: The device is not connected
Is this the expected behavior? ... |
Hi
I have a web application running in cluster mode with a load balancer.
It consists in two tomcats (T1, and T2) addressing only one DB.
T2 is nfs mounted to T1. This is ... |
I am looking for a list of platform-specific (JRE-specific) of IOException messages indicating disk is full or out of space.
So far I have:
Windows: "There is not enough space on the disk"
Solaris/Linux?: ... |
"The major difference between a thing
that might go wrong and a thing that
cannot possibly go wrong is that when
a thing that cannot possibly ... |
I have the following 3 lines of the code:
ServerSocket listeningSocket = new ServerSocket(earPort);
Socket serverSideSocket = listeningSocket.accept();
BufferedReader in = new BufferedReader(new InputStreamReader(serverSideSocket.getInputStream()));
The compiler complains about all of these 3 lines and its ... |
I just had a test on java and we had to give the definition of
1) Static:
2) IOExcepion:
What I said for static was...a static method is used to define a ... |
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I had very errorsome Exception handling with if-clauses. An exception occurs if not found path. An exception returns the function again. The function is recursive. Safe?
$ javac SubDirs.java
$ java SubDirs
Give ... |
Do you agree that the designers of Java class java.io.IOException should have made it an unchecked run-time exception derived from java.lang.RuntimeException instead of a checked exception derived only from java.lang.Exception?
I think ... |
Is there a way to get from the IOException object the file that fails?
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Hi:
I am trying to download an xml file using Stream and things was fine , until the xml size became bigger than 9 MB , so i've got this error
java.io.IOException: ... |
why we use 'Throws IOException' in java File handling. i mean what is the purpose of using these two words in File handling??
Please help...
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Is there any way to programatically differentiate between what caused an IOException? For example java will throw an IOException, if there was an error during writing. How can i tell, if ... |
I am using webdriver api (Selenium) and when I am trying to test a site (which I can view and browse normally in my browsers), I get the following message over ... |
Why does RAD7 give a compile error of
The constructor IOException(Exception) is undefined
on the following line
throw new IOException(ex);
The Javadoc for Java 1.6/6.0 states that IOException has a |
Most of the IO operation requires try catch block or throws . Why is try catch or throws not required for System.out.print or println. If there is any exception inside these ... |
What's wrong with this code
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
/**
*
* @author Master
*/
public class Server {
try
{
ServerSocket S = new ...
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import java.io.*;
import java.lang.*;
public class Propogate1
{
String reverse(String name)
{
if(name.length()==0)
throw IOException("name");
String reverseStr="";
for(int i=name.length()-1;i>0;--i)
{
reverseStr+=name.charAt(i);
}
return reverseStr;
}
public static void main(String[] args)throws IOException
{
String name;
try
{
Propogate1 ...
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I was trying out a piece of code that I found off a website tutorial for an SSL EchoServer and EchoClient.
The code of the client is as follows:
import java.io.*;
import java.net.*;
import javax.net.ssl.*;
public ...
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I have the following error:
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: flexitime.UniSystems
What is the usual reason for this?
I am trying to read a file in called storage.dat.
The code where it gets the error is
private ...
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Is there a reason why createNewFile() method from java.io.File throws an IOException, but mkdir() from the same class does not?
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I'm trying to verify the signature of a message, but I am getting the following exception being thrown.
Exception in thread "main" java.security.SignatureException: Signature encoding error
at sun.security.rsa.RSASignature.engineVerify(RSASignature.java:185)
...
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I am using NTauth.jar provided by j-integra in one of my projects. The code looks like following
String server = "172.5.1.21";
String domain = "wwwww";
String username = "yyyyyy";
String password = "zzzzzz";
com.linar.jintegra.NTLMAuthenticate.validate(url, domain, username, ...
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try {
//String location = dir1.getCanonicalPath()+"\\app_yamb_test1\\mySound.au";
//displayMessage(location);
AudioInputStream audio2 = AudioSystem.getAudioInputStream(getClass().getResourceAsStream("mySound.au"));
Clip clip2 = AudioSystem.getClip();
clip2.open(audio2);
...
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I need some help with understanding the IOException. I've reviewed a lot of information on the internet, and looked at the technical specifications at Oracle's Java website.
Am I correct in my ... |
I am executing a below program which call the shell through java and I am getting the excepton please help me.
program:
import java.io.*;
import java.util.*;
public class ProcessExample {
/**
* @param args
*/
public ...
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I have a lot of jobs (not all) failing on my Jenkins-server (Windows 7, installed as service) with:
10:04:01 Started by upstream project "X281-Integration" build number 324
10:04:26 java.io.IOException: Unable to ...
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when i execute the below code
File f = new File("c:/sample.pdf");
PdfWriter.getInstance(document, new FileOutputStream(f));
document.open();
System.out.println("opening the document..");
PdfPTable headerTable=new PdfPTable(9);
PdfPCell cellValue = new PdfPCell(new Paragraph("Header 1"));
cellValue.setColspan(1);
headerTable.addCell(cellValue);
cellValue = new PdfPCell(new Paragraph("Header 2"));
headerTable.addCell(cellValue);
cellValue = new PdfPCell(new ...
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This is probably a newbie question, but hope you can help me. :) I have something like this:
try
{
//try to do something there
}
catch (IOException e)
{
//handle the exception
e.printStackTrace();
}
I am using NetBeans ... |
i have to create four pdf files using itext.while running the code first two of the are succesfully created.the remaning two occuring an Exception "ExceptionConverter: java.io.IOException: The document has no pages."
Here ... |
im trying to do my sempahore homework with JBACI, but i cant use it (after long steps to make it run, im sure i did them right) because terminal shows me ... |
Im getting this error when i run my Applet Application,can any body guess why is it coming ?
java.io.IOException: Error closing named pipes
...
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I have this strange problem when I execute this piece of code:
cdrFiles = dir.list(filter);
System.out.println("cdrFiles length: " + cdrFiles.length);
if (cdrFiles.length >= 1) {
System.out.println("there is 1 or ...
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I am currently using the AndEngine and doing a XML parser and using it as a level creator.
I have tried various methods to read the .xml file but I keep ... |
vikassawant hi, I am trying to import excel file in JTable.For that I used following code, import com.zfqjava.swing.*; import org.apache.poi.hssf.usermodel.*; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.poifs.filesystem.POIFSFileSystem; FileDialog fd=new FileDialog(new Frame()); fd.setMode(FileDialog.LOAD); ... |
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hi all, i am getinga really werid IOexception which i have never encountered before.i am using tomcat for my servlets. The request parameters are send thru the browser .when my parameter values contans spaces the browser successfully converts them to %20 and appropriate messages are displayed.. but when i try to test by passing '%%abc' (example value: note it explicitly contains ... |
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Hello friends.. I am including my test code which establishes a ssl connection to a server and posts an HTTP Post request .which then sends the response back. This code works fine with jdk1.3.1_01. But when i try to run the same code sample on j2sdk1.4.2_02, i get Socket Exception. Unexcpected end of file error just after the System.out.println(hello....10)statement. On searching ... |
A friendly place for programming greenhorns! Register / Login Java Forums Java I/O and Streams Keep getting ioexception...please help Post by: Greg Anthony, Greenhorn on Apr 18, 2004 11:18:00 I have two classes. Class ItemRecord defines the record in my input file and OrderCalculator4 opens the file and should load some arrays up with the data in the file. ... |
I have a problem where when a create an new filelist object I want it to populate using a the constructor. The problem is that I get an IOException error if I use the contructor this way. I can call it externally without problems (i.e. fl.populatelist() . Code below public class Filelist { private List listOfFiles = new ArrayList(); Filelist() { ... |
I guess the interviewer could have meant "You're copying a file over a network, but the file is large, so it takes a long time. The network is fairly unreliable, so often network problems interrupt the transfer. What should you do?" ...in which case the answer would involve splitting the file up, and probably using checksums to ensure correct recomposition at ... |
OK, so I have this program, which reads two characters, appends them to a StringBuffer, adds the resulting string to a Vector, and does the same until the end of file is reached. Now, since I didn't managed to remember or find anything on the documentation about an End Of File flag (I remember you can see if you reached it ... |
Hi, I have a utility for export and import of data. I am saving a file in excel format and then importing the same file to the database. When I try to import the same exported file, I get IOException - Invalid Header signature. But, if I first open the exported file in MS excel and then do - save as ... |
Hi, void mark(int readlimit) this method "Marks" the current position in this input stream. void reset() Repositions this stream to the position at the time the mark method was last called on this input stream. These two methods r of FilterInputStream class.... well i dun know much abt PGp keys(Whatever) but it seems u want to read from a file. this ... |
Hello, I am in instructor at a community college and I have many students who can't get something to work under Windows 2000 with jdk1.3. They are trying to perform a simple System.in.read() and they get this: java.io.IOException: The handle is invalid at java.io.FileInputStream.readBytes(Native Method) at java.io.FileInputStream.read(FileInputStream.java:183) at java.io.BufferedInputStream.fill(BufferedInputStream.java:186) at java.io.BufferedInputStream.read(BufferedInputStream.java:204) at Demo.main(Demo.java:8) Exception in thread "main" I can't reproduce this ... |
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Hi, We encountered an error when trying to make a secure connection/https posts to URL "java.io.IOException: unsupported keyword ?". We are using JDK 1.3.1, Weblogic 6.1SP5 in SUN Solaris. We have imported the following "Comodo Class 3 Security Services CA"/GTE Cuber Trust to the truststore. We were able to do a secure connection to other URL who are using verisign certs. ... |
Yong, Javaranch tip: If you are going to post more than a line or two of your code, wrap the code in UBB CODE tags. Doing so preserves your indenting which makes it easier to read. If it's easier to read, more people will read it and you will stand a better chance of getting help. There is a button on ... |
Hi, Runtime rtime = Runtime.getRuntime(); Process child = rtime.exec("/bin/bash"); BufferedWriter outCommand = new BufferedWriter(new OutputStreamWriter(child.getOutputStream())); outCommand.write("/users/scripts/softlinks.sh "+file_location+" "+file_location1+" "+a_mib_names); outCommand.flush(); I added the above lines to the exising code now i am getting the following error. java.io.IOException: Not enough space at java.lang.UNIXProcess.forkAndExec(Native Method) at java.lang.UNIXProcess.(UNIXProcess.java:52) at java.lang.Runtime.execInternal(Native Method) at java.lang.Runtime.exec(Runtime.java:566) at java.lang.Runtime.exec(Runtime.java:428) at java.lang.Runtime.exec(Runtime.java:364) at java.lang.Runtime.exec(Runtime.java:326) Pls let me know. Required ... |
Hi, Iam working in Java Sound API. I wanted to jump to a location in the audifile, so im using AudioInputStream's skip() method. It works file for Mu-Law format. I was able to skip and play from the jumped location for Mu-Law format. But when comes to A-Law format or PCM Signed format, the skip() method throws an exceptio like this.... ... |
I am developing a class library that provides access to a Server based application over TCP/IP sockets. All functional operations possible through my class library essential invoke a request-response cycle over the underlying socket connection to my server. So, for almost all of these operations an IOException can be generated while sending the request and/or reading the response over the wire. ... |
Hello, I am in instructor at a community college and I have many students who can't get something to work under Windows 2000 with jdk1.3. They are trying to perform a simple System.in.read() and they get this: java.io.IOException: The handle is invalid at java.io.FileInputStream.readBytes(Native Method) at java.io.FileInputStream.read(FileInputStream.java:183) at java.io.BufferedInputStream.fill(BufferedInputStream.java:186) at java.io.BufferedInputStream.read(BufferedInputStream.java:204) at Demo.main(Demo.java:8) Exception in thread "main" I can't reproduce this ... |
I created a program in which I can read and write objects to a sequential file. I want to be able to write multiple objects. After which I want to read the objects back sequentially. what should I do to reposition the file pointer to the start of the file ? which stream do I need to close and open |
Chinedu: Here are a couple of points to help you get started. You can read a string from the keyboard using the following sequence // Create a BufferedReader using System.in. BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String str; System.out.print("Enter a number: "); str = br.readLine(); // read the string entered by the user To convert the string into an integer, you ... |
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Hi. I have two classes: Logic.java and Main.java In Main.java, a file is selected and the absoulute path is returned. This should then be passed to the Logic.java class which will read the top line of that file and return that as a String back to the Main.java class to be displayed in a jTextField. The method within Main.java that should ... |
Hi,I get the below error while trying to send an email using java mail API.The same code when i run from desktop is working fine.But when i deploy it on the server as a war file,i get the below error javax.mail.MessagingException: IOException while sending message; nested exception is: java.io.FileNotFoundException: /Error_20080825.xls (No such file or directory) at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:676) at javax.mail.Transport.send0(Transport.java:189) at javax.mail.Transport.send(Transport.java:118) ... |
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public synchronized void run(){ boolean temp=false; System.out.println("shut run " +"shut.bat "+this.IPaddr+" "+this.User+" "+this.Passwd); try{ p = Runtime.getRuntime().exec("shut.bat "+this.IPaddr+" "+this.User+" "+this.Passwd); // newly added##### //String cmd = "shut.bat"+this.IPaddr+" "+this.User+" "+this.Passwd; //p = Runtime.getRuntime().exec(cmd); // ########### System.out.println(p); System.out.println("Shutdown is in progress "); in = new BufferedReader(new InputStreamReader(p.getErrorStream())); line=null; while ((line = in.readLine()) != null){ //System.out.println(this.IPaddr+line); if(!temp) //mw.updateMsg(this.IPaddr+" --- > "+"Connecting ....."); System.out.println(this.IPaddr+" --- ... |
Hi mates While reading a FileInputStream I am experiencing following exception. Please help me to identify the reason java.io.IOException: Bad file descriptor at java.io.FileInputStream.readBytes(Native Method) at java.io.FileInputStream.read(Unknown Source) at java.io.DataInputStream.read(Unknown Source) at logic.ICCSChequeImagesReport.downloadChequeImagesFromDocumentServer(ICCSChequeImagesReport.java:337) at logic.ICCSChequeImagesReport.extractChequeImages(ICCSChequeImagesReport.java:303) at logic.ICCSChequeImagesReport.extract(ICCSChequeImagesReport.java:292) at logic.ICCSChequeImagesReport.(ICCSChequeImagesReport.java:85) at logic.Logic8011470.print(Logic8011470.java:1547) at logic.Logic8011470.printImages(Logic8011470.java:1542) at logic.Logic8011470.pressed(Logic8011470.java:293) at comet.Form.processDisplayEvents(Form.java:365) at comet.Form.executeInternal(Form.java:335) at comet.Form.execute(Form.java:315) at logic.Logic8011470.onSearchButtonPressed(Logic8011470.java:594) at logic.Logic8011470.pressed(Logic8011470.java:264) at comet.Form.processDisplayEvents(Form.java:365) at comet.Form.executeInternal(Form.java:335) at comet.Form.execute(Form.java:315) ... |
i have a probleme with rrd4j in my program i have to do 40 000 rrd update in 5 minutes my error message is : java.io.IOException: Read failed, file C:\Documents and Settings\RRDatabase\62736@adsl.gnet.tn\62736@adsl.gnet.tn.rrd not mapped for I/O at org.rrd4j.core.RrdNioBackend.read(Unknown Source) at org.rrd4j.core.RrdBackend.readString(Unknown Source) at org.rrd4j.core.RrdPrimitive.readString(Unknown Source) at org.rrd4j.core.RrdString.get(Unknown Source) at org.rrd4j.core.Datasource.getDsName(Unknown Source) at org.rrd4j.core.RrdDb.getDsNames(Unknown Source) at org.rrd4j.core.Sample.(Unknown Source) at org.rrd4j.core.RrdDb.createSample(Unknown Source) at ... |
Hi! I got this stack trace: Caused by: java.io.IOException: Server returned HTTP response code: 403 for URL: https://some.server.com/foo/services/FooService?wsdl at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) at java.net.URL.openStream(Unknown Source) at com.sun.xml.internal.ws.wsdl.parser.RuntimeWSDLParser.createReader(Unknown Source) at com.sun.xml.internal.ws.wsdl.parser.RuntimeWSDLParser.resolveWSDL(Unknown Source) at com.sun.xml.internal.ws.wsdl.parser.RuntimeWSDLParser.parse(Unknown Source) at com.sun.xml.internal.ws.client.WSServiceDelegate.parseWSDL(Unknown Source) at com.sun.xml.internal.ws.client.WSServiceDelegate.(Unknown Source) at com.sun.xml.internal.ws.client.WSServiceDelegate.(Unknown Source) at com.sun.xml.internal.ws.spi.ProviderImpl.createServiceDelegate(Unknown Source) at javax.xml.ws.Service.(Unknown Source) at com.fo.bar.SomeService.(SomeService.java:77) ... How can javax.xml.ws.Service. (the constructor protected Service(java.net.URL ... |
I don't know why. I put 'throws IOException' after the method name. I have an assignment to write a driving game in command line (all in ascii) and this method gets the X coordinate of the car in the track array. Characters f, g and h move the car left and right or keep it in place. public int getCarPosition() throws ... |
Hi guys! I am getting a java.io.IOException: Premature EOF - for some urls, yet different on each execution - after executing the following function. Any ideas? public static void urlReader(String url, String path, String fileName) { String inputLine = null; URL x = null; BufferedReader in = null; createFile(path, fileName); try { // Create file FileWriter fwstream = new FileWriter(path + ... |
Hello everybody, I have written a class that reads a file in a format I built from scratch. It's a sequence of chunks, each made of an integer and a GZIPped block of serialized objects. The integer specifies the size of the block, in order to allow fast seeking. While reading, it also constructs an index of the position of each ... |
Hi, I have this code.But I don't know how to call to senderEngine method. please tell me how to call to senderEngine method. import java.io.*; import java.net.*; import javax.swing.*; import java.awt.*; import java.awt.event.*; public class senderGUI implements ActionListener{ JFrame senderGUIFrame=new JFrame(); JPanel senderGUIPanel=new JPanel(); JTextArea senderGUITArea=new JTextArea(); JScrollPane senderGUIScroll=new JScrollPane(senderGUITArea); JButton senderGUISend=new JButton("Send"); JButton senderGUICancel=new JButton("Cancel"); static String msg=""; senderGUI(){ senderGUIFrame.setBounds(10,10,400,400); ... |
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I had written a program using HSSF api to copy a excel sheet to a cvs file. The program works fine as a stand-alone application. I tried to integrate it with an existing code. I got an issue. The following is the code // create FOS for PnR sheet FileOutputStream csvFileOut = new FileOutputStream(pnrCsvFileName); System.out.println("===> csvFileOut created"); InputStream srcFis = new ... |
Hi, I'm currently in the Exceptions section (of my java course) and my program below relates to the same. About the program: To take input from the user a number (integer), check whether its prime number or not and display the appropriate message to standard output. Issue faced: The exception thrown is IOException and the catch block should handle the same. ... |
I created an I/O stream say FileInputStream, when i am over using it i call its close() method. But my IDE shows error and suggest it to be wrapped inside a try-catch block. Now if exception occurs in closing the stream how will it finally get closed? Even i put the close() statement in 'finally block', it suggests to enclose in ... |
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Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: java.io.IOException: Could not get shell folder ID list at sun.awt.shell.Win32ShellFolderManager2$ComInvoker.invoke(Win32ShellFolderManager2.java:506) at sun.awt.shell.Win32ShellFolder2.getFileSystemPath(Win32ShellFolder2.java:563) at sun.awt.shell.Win32ShellFolderManager2.getRecent(Win32ShellFolderManager2.java:112) at sun.awt.shell.Win32ShellFolderManager2.get(Win32ShellFolderManager2.java:251) at sun.awt.shell.ShellFolder.get(ShellFolder.java:219) at sun.swing.WindowsPlacesBar.(WindowsPlacesBar.java:64) at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.updateUseShellFolder(WindowsFileChooserUI.java:512) at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.installComponents(WindowsFileChooserUI.java:194) at javax.swing.plaf.basic.BasicFileChooserUI.installUI(BasicFileChooserUI.java:136) at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.installUI(WindowsFileChooserUI.java:127) at javax.swing.JComponent.setUI(JComponent.java:673) at javax.swing.JFileChooser.updateUI(JFileChooser.java:1763) at javax.swing.JFileChooser.setup(JFileChooser.java:360) at javax.swing.JFileChooser.(JFileChooser.java:333) at javax.swing.JFileChooser.(JFileChooser.java:286) at MyXenonConc.XenonConcUI.jMenuItem3ActionPerformed(XenonConcUI.java:1909) at MyXenonConc.XenonConcUI.access$300(XenonConcUI.java:31) at MyXenonConc.XenonConcUI$7.actionPerformed(XenonConcUI.java:1267) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.AbstractButton.doClick(AbstractButton.java:357) at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1225) ... |
import java.io.*; public class passSample { public static void main(String args[]) throws IOException { InputStreamReader isReader = new InputStreamReader(System.in); BufferedReader br = new BufferedReader(isReader); FileWriter myFile = new FileWriter("E:/test.txt"); BufferedWriter bw = new BufferedWriter(myFile); System.out.println("Nhap vao, go~ 010 de ket thuc."); String str = new String(); while( !(str = br.readLine()).equalsIgnoreCase("010") ) { bw.write(str); bw.newLine(); } bw.flush(); myFile.close(); } } |
public static void urlReader(String url, String path, String fileName) { String inputLine = null; URL x = null; BufferedReader in = null; createFile(path, fileName); try { // Create file FileWriter fwstream = new FileWriter(path + fileName); BufferedWriter out = new BufferedWriter(fwstream); x = new URL(url); in = new BufferedReader(new InputStreamReader(x.openStream())); while ((inputLine = in.readLine()) != null) { if (inputLine.length() > 0) ... |
Hi. Is throws java.io.IOException can be used together with char only? How about int, String, long... ... for example, class ReadChar { public static void print( long num ) throws java.io.IOException{ System.out.println( "Type a number and press [Enter]" ); num = (long)System.in.read(); System.out.println( "You typed " + num ); } } In this case, when I type 7, it stated I ... |
public class callMethod extends JFrame implements ActionListener { JButton button; callMethod(){ button=new JButton("show"); button.addActionListener(this); add(button); } public static void main(String[] args) throws IOException { callMethod cm=new callMethod(); cm.setSize(200,100); cm.setVisible(true); } public void actionPerformed (ActionEvent e) { if (e.getSource()==button) { MyFile file=new MyFile(); String[][] show=file.method("get", "20"); //error mentioned in this line .. .. } } |
Yes, I think that's okay. Because the method that calls it is actually a constructor with just one line in it's body...the call to parseURL. So if parseURL throws the exception, the constructor just won't be created, and the program will exit. Correct? (I may be wrong, and if so, please correct me!) |
public static String SAVE_DIRECTORY = "C:/ozzypos/"; public static void writeNewOrders(Order order) { String filename = createDirectory("orders/") + String.format(Date.getFormattedDate(false) + "_%d.pos",order.getOrderID()); FileOutputStream fos = null; ObjectOutputStream out = null; try { fos = new FileOutputStream(filename); [COLOR="DarkGreen"]//Line 41[/COLOR] out = new ObjectOutputStream(fos); out.writeObject(order); out.close(); } catch (IOException ex) { ex.printStackTrace(); } } public static String createDirectory(String subdirectory) { String finalDirectory = SAVE_DIRECTORY + ... |
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My class assigned me to write a fractions class. //Colin Steele //CSC2310 import java.io.*; import java.util.*; import java.awt.*; public class Fractions { public static void main(String[] args) { Fraction f1 = new Fraction(1,1); int x; InputStreamReader input = new InputStreamReader(System.in); x=input.read(); } } --------------------Configuration: -------------------- C:\Users\Colin\Desktop\Stuff\CSC2310\Colinsteele.j ava:13: unreported exception java.io.IOException; must be caught or declared to be thrown x=input.read(); ^ 1 ... |
I know it's better to cover a general exception in the header of the method but, why couldn't I do the following? public void writeList() { try { PrintWriter out = new PrintWriter( new FileWriter("OutFile.txt")); // for (int i = 0; i < SIZE; i++) { // out.println("Value at: " + i + " = " + // vector.elementAt(i)); // } ... |
I am using TextPad to enter the code - then Tools > Compile then Run. All the other 30 examples have run OK using this method. Yes - I checked running the program from the command line and it is OK!! I will ask the question in the TextPad forum. Thanks for your help Alan |
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public static void main(String[] args) throws IOException, InterruptedException { // declaration section: // declare a server socket and a client socket for the server // declare an input and an output stream ServerSocket batchServer = null; Socket clientSocket = null; String line; DataInputStream is; PrintStream os; Runtime rt = Runtime.getRuntime(); String[] cmd = new String[1]; // creating a new ServerSocket object ... |
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Hi Folks, I have create 2 classes, ClassA and ClassB. ClassA does all of the file handling operations, for example reading writing and exceptions like IOE and EOF. ClassB creates an instance of ClassA and adds or removed text from from file. The trouble I am running into is that as soon as I create instance of ClassA in ClassB, I ... |
Definitely place your close() in a finally block, and be sure that close() statement is surrounded by its own try-catch, where in the catch all you will do is log the exception. As an aside, your original code does not have to be that complex. If the exception propagates out of the main() method, the JVM will print a stack trace ... |
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you see, using the 1st code without the "while", i let the server shows its respond to the client using System.out.println messages. It respond to the client exactly what it shoud be. but unfortunately, the client just didnt load the next image. the program works correctly except for the part where the client didnt show the image that its supposed to...so ... |
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Hi, Please open the link below http://java.sun.com/docs/books/tutorial/essential/exceptions/putItTogether.html In scenario 1:- it says that Here's the complete output from the ListOfNumbers program that appears when an IOException is thrown. Entering try statement Caught IOException: OutFile.txt PrintWriter not open but in Scenario 2: The try Block Exits Normally, it says In this scenario, all the statements within the scope of the try block ... |
Hi , I have a java program in that i am creating a file in /home directry and then i am execeuting the file from my java class. The command that being used is "exec more mylog.out". When i tries to execute its giving an error shell error java.io.IOException: java.io.IOException: exec: not found. Pls help me to find out the solution ... |