fileutils

OutOfMemory error when using Apache Commons lineIterator

由 非 Y 不嫁゛ 提交于 2019-12-10 20:58:02
问题 I'm trying to iterate line-by-line a 1.2GB file using Apache Commons FileUtils.lineIterator . However, as soon as a LineIterator calls hasNext() I get a java.lang.OutOfMemoryError: Java heap space . I've already allocated 1G to the java heap. What am I doing wrong in here? After reading some docs, isn't LineIterator supposed to be reading the file from the file system and not loading it into memory? Note the code is in Scala: val file = new java.io.File("data_export.dat") val it = org.apache

Progress bar with Apache FileUtils.copyDirectory(…)

由 こ雲淡風輕ζ 提交于 2019-12-10 15:53:50
问题 Does anyone know any way of implementing progress bar for Apache's FileUtils.copyDirectory(File src, File dst) ? I don't see anything helpful in JavaDocs and API. Seems like a common use case in dealing with batch disk operations, so I'm not sure if I miss something obvious. 回答1: I guess you will have to do that yourself. I see this immediate solution: Find all files you are about to copy and count the number or total file size first (depending on what your progress bar should measure) Copy

Check Duplicate File content using Java

由 旧巷老猫 提交于 2019-12-06 11:01:59
We have a 150 Gb data folder. Within that, file content is any format (doc, jpg, png, txt, etc). We need to check all file content against each other to check if there are is duplicate file content. If so, then print the file path name list. For that, first I used ArrayList<File> to store all files, then used FileUtils.contentEquals(file1, file2) method. When I try it for a small amount of files(Folder) it's working but for this 150Gb data folder, it's not showing any result. I think first storing all files in an ArrayList makes the problem. JVM Heap problem, I am not sure. Anyone have better

Java - Copy file to another directory using FileUtils and copyFileToDirectory - doesn't work -?

由 徘徊边缘 提交于 2019-12-04 18:34:10
问题 I would like to copy a file from one directory to another using Java and the FileUtils classes of apache org commons. I wrote up a quick java program to test on my local system. Here is the code. The file exists, but the copying of the file to another directory isn't working. What am I missing? Is there some improper syntax somewhere? import org.apache.commons.io.FileUtils; import java.io.File; class MoveFile { public static void main(String[] args) { MoveFile myobj = new MoveFile(); myobj

Java - Copy file to another directory using FileUtils and copyFileToDirectory - doesn't work -?

由 我们两清 提交于 2019-12-03 12:47:36
I would like to copy a file from one directory to another using Java and the FileUtils classes of apache org commons. I wrote up a quick java program to test on my local system. Here is the code. The file exists, but the copying of the file to another directory isn't working. What am I missing? Is there some improper syntax somewhere? import org.apache.commons.io.FileUtils; import java.io.File; class MoveFile { public static void main(String[] args) { MoveFile myobj = new MoveFile(); myobj.moveTheFile(); } public void moveTheFile () { try { File destDir = new File("C:\\Folder1\\temp2"); File

Java- CSV / Delete column in csv file

由 ℡╲_俬逩灬. 提交于 2019-12-02 12:11:24
问题 I try to delete a column in csv file in Java. for example, I have this csv file ID name1 name2 name3 1 hello hell hel 2 try tr t 3 browser bro br and I want the after the next operation: (delete csvFile, 2) it will be: ID name1 name3 1 hello hel 2 try t 3 browser br I found only operations that invlove rows and not column. 回答1: The only way to delete a column in a CSV file is to remove the header and the information of this column in the whole file, that is for each row of the file. Even if

Ruby FileUtils alias on Mac?

由 浪子不回头ぞ 提交于 2019-12-02 10:51:56
How do I use Ruby's fileutils to make an alias on Mac's filesystem? Symbolic link would work too, either one. Or would I need to use some sort of shell script to do so? Patrick Oscity Use FileUtils::symlink : FileUtils.symlink(src, dest) To learn how to make an alias via AppleScript, see https://apple.stackexchange.com/questions/51709/can-i-create-a-desktop-shortcut-alias-to-a-folder-from-the-terminal As a side note: except for the aliases (via AppleScript), Ruby will handle this correctly on any supported file system. 来源： https://stackoverflow.com/questions/20678630/ruby-fileutils-alias-on

FileUtils not showing suggestion to import predefined class for Screenshot functionality in selenium WebDriver

由 删除回忆录丶 提交于 2019-12-02 03:12:46
问题 I am not allowed to use FileUtils in the program and error is shown when doing so. Even no suggestion is showing to import this pre-defined Class. I tried to search the solution but what I found was to import the class. But in my case even suggestion is not showing to import any class. Hovering on the "FileUtils" shows the suggestion to create FileUtils class/interface. Below is my code: package captureScreenshot; import java.io.File; import java.io.IOException; import org.apache.commons.io

FileUtils not showing suggestion to import predefined class for Screenshot functionality in selenium WebDriver

由 女生的网名这么多〃 提交于 2019-12-02 00:32:20
I am not allowed to use FileUtils in the program and error is shown when doing so. Even no suggestion is showing to import this pre-defined Class. I tried to search the solution but what I found was to import the class. But in my case even suggestion is not showing to import any class. Hovering on the "FileUtils" shows the suggestion to create FileUtils class/interface. Below is my code: package captureScreenshot; import java.io.File; import java.io.IOException; import org.apache.commons.io.FileUtils; //Getting Error at this line import org.openqa.selenium.By; import org.openqa.selenium

How to save a .pdf from a browser?

由 二次信任 提交于 2019-12-01 11:55:48
I tried to save .pdf file using different methods I found on stackoverflow including FileUtils IO , however, I would always get it damaged. As I opened the damaged file using a notepad I got the following stuff: <HEAD> <TITLE> 09010b129fasdf558a- </TITLE> </HEAD> <HTML> <SCRIPT language="javascript" src="./js/windowClose.js"></SCRIPT> <LINK href="./theme/default.css" rel="stylesheet" type="text/css"> <LINK href="./theme/additions.css" rel="stylesheet" type="text/css"> <BODY leftmargin="0" topmargin="0"> <TABLE cellpadding="0" cellspacing="0" width="100%"> <TR> <TD class="mainSectionHeader"> <A
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