ioexception

Using e.printStackTrace() in Java

由 霸气de小男生 提交于 2019-12-04 08:12:41
问题 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 IDE and for some reason the printStackTrace is underlined in a squiggly line. When I press Alt+Enter, it says Throwable.printStackTrace() should be removed. What does this mean? Could anyone give more insight as what this may mean? Or can I ignore this? Thanks! 回答1: It is just

Unreported exception java.io.IOException when compiling Java code

由 心已入冬 提交于 2019-12-04 06:22:14
问题 I am experiencing a problem with this code: public class gravityv1 { public static double[] calculategravity(double[] mass, int[] diameter) { double[] gravity = new double[mass.length]; for (int n = 0; n < mass.length; n++) { gravity[n] = (6.67E-11 * mass[n]) / Math.pow((diameter[n] / 2), 2); } return gravity; } public static void print(double[] gravity, double[] mass, int[] diameter, String[] planet) { System.out.println(" Planetary Data"); System.out.println("Planet Diameter(km) Mass(kg) g

when does java.util.zip.ZipFile.close() throw IOException?

由 独自空忆成欢 提交于 2019-12-04 05:40:27
Under what circumstances would java.util.zip.ZipFile.close() throw an IOException? Its method signature indicates that it can be thrown, but from the source code there doesn't seem to be any place where this could happen, unless it's in native code. What corrective action, if any, could be taken at the point where that exception is caught? From the API docs on ZipFile.close() : Closing this ZIP file will close all of the input streams previously returned by invocations of the getInputStream method. And InputStream.close() throws an IOException , so ZipFile.close() has to throw it too.

Java IOException - Stream Closed

由 北战南征 提交于 2019-12-04 03:33:11
问题 I get " IOException : Stream Closed" when I run this program. The text contains many lines of data. Program should read each line, do necessary function and write the output to a new file. I am confused as to which writer should be closed first and where. import java.net.*; import java.io.*; public class URLReader { public static void main(String[] args) throws Exception { BufferedReader br = null; try { // change this value FileInputStream fis = new FileInputStream("C:\\Users\\Rao\\Desktop\

IOException - Cannot load file

由 ⅰ亾dé卋堺 提交于 2019-12-04 03:29:48
问题 I have an app that shows GIF images. It all works fine if image is saved in drawable , and I access it like this is=context.getResources().openRawResource(R.drawable.mygif); movie = Movie.decodeStream(is); But I need to download image from internet, so I'm saving it to CacheDir, that works fine. I tried the following to read it. try { is = new BufferedInputStream(new FileInputStream(new File(context.getCacheDir(), "mygif.gif"))); } catch (FileNotFoundException e) { // TODO Auto-generated

java.io.IOException: Stream closed

由 空扰寡人 提交于 2019-12-04 02:41:02
For multiple image retrieval I am calling a PhotoHelperServlet with an anchor tag to get imageNames(multiple images) as follows PhotoHelperServlet to get names of Images protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // Getting userid from session Image image = new Image(); image.setUserid(userid); ImageDAO imageDAO = new ImageDAO(); try { List<Image> imageId = imageDAO.listNames(image); if (imageId == null) { // check if imageId is retreived } request.setAttribute("imageId", imageId); //Redirect it to home page

Didn't find class on path DexPathList

由 独自空忆成欢 提交于 2019-12-04 02:13:31
问题 I was attempting to update my project to targetSdk 23, but I decided I wasn't up for it given all the deprecations. I didn't want to go through it so I reverted to an older version on mercurial, and now all I get is this error and I can't get the damn app to run again. What could possibly be going wrong? 12-21 02:36:00.545 437-437/com.elgami.customizer E/AndroidRuntime﹕ FATAL EXCEPTION: main Process: com.elgami.customizer, PID: 437 java.lang.RuntimeException: Unable to instantiate application

How to debug “Sharing Violation” when trying to delete a file

由 牧云@^-^@ 提交于 2019-12-04 00:54:49
I have a multi threaded C# application which creates files, opens them for processing, then deletes them once finished. This application can expect anywhere from 1 - 100 files to be processed. Somewhat randomly (most likely attributed to the multi threaded nature of the application) I get a sharing violation when I try to delete a file after processing. My gut says, well Vic, you didn't properly close/dispose the file before trying to delete it. And I would go with my gut if it happened for every file, but it doesn't. So, I'm trying to find out where I'm making a mistake. Anyone out there have

Hadoop IOException failure to login

由 ⅰ亾dé卋堺 提交于 2019-12-04 00:18:09
I'm pretty new to Hadoop. However, I've been able to successfully setup hadoop 2.7.3 with Java 7 in the cluster mode on my servers. Everything works totally fine. But then, when I try to switch to Java 8 and start dfs, there is an error: Exception in thread "main" java.io.IOException: failure to login at org.apache.hadoop.security.UserGroupInformation.loginUserFromSubject(UserGroupInformation.java:824) at org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:761) at org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:634) at

IOException for drive full or out of space

由 跟風遠走 提交于 2019-12-03 13:05:47
问题 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?: Not enough space GCJ: No space left on device I wish Java would make an IOException subclass for this... 回答1: The wording is actually a system message, not one from the JRE. (POSIX compliant will return "Not enough space") As such, your best bet is to get a list of system error messages for
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