Files.probeContentType() is an instance of FileTypeDetector class's abstract method String FileTypeDetector.probeContentType(), it's an extension based detector. So extend it in a new class or even anonyinter class (cannot do that because FileTypeDet…

问题 在导入java.io.console的时候出现"Usage of API documented as @since 1.6+"…

通过standard reports查看Disk Usage,选中Database,右击,选择Reports->Standard Reports->Disk Space Usage,截图如下 在Disk Usage 报表中,Data Files Space Usage分为4部分:Index , Data,Unallocated 和 Unused. Index 是Index 结构实际占用的space Data 是table objects实际占用的space Unused 是已经allocate…

OpenCascade MeshVS Usage eryar@163.com Abstract. MeshVS means Mesh Visualization Service. It can be used to representation mesh in different style, such as colored stress patterns mesh, mesh with text and mesh like vector(with arrow). So MeshVS usual…

关于这个在eclipse中运行java程序的错,首先确认你的jdk,jre是否完整,并且与你的eclipse的位数相同,当然我相信这个错误大家应该都会去检查到. 第二个关于addDimensionedImage的配置这个在 如果你出现前段时间可以运行程序,但是好久没用,突然出现usage这个错误的情况,那么双击进去这个选项: 我的配置中,这个mainClass原先是一大串balabala的东西,然后改完就正确了,如果你的jre和所需求的不符合,在这个界面中的上方同样会提示,暂时只有这么多  QA…

本文转载自:http://blog.csdn.net/myfxx/article/details/21096949 今天在用eclipse启动项目的时候发现了一个问题,就是每次启动项目的时候,eclipse都会弹出一个Subclipse Usage的弹框,很是让人觉得不爽,那么这个框是什么意思呢,我们又如何取消这个弹框呢,下面就来实践一下. 1.这个弹框的意思,如果英文不好的童鞋随便用一个翻译软件就能够翻译出来并能够大体了解其含义: 2.接着我们来看看如何取消这样的一个弹框: Windows--…

转自:http://www.sqlusa.com/bestpractices/training/scripts/dynamicsql/ Dynamic SQL & Stored Procedure Usage in T-SQL Important security article related to dynamic SQL: How To: Protect From SQL Injection in ASP.NET ------------ -- Dynamic SQL QUICK SYNTA…

在Linux下使用subversion尝试链接VisualSVN server搭建的svn库,可能会报下面错误, svn: OPTIONS of 'https://server.domain.local/svn/repo': SSL handshake failed: SSL error:Key usage violation in certificate has been detected. (https://server.domain.local) google了这个问题,发现这个在Visu…

随着时间的累积,在没有很好的规划的情况下,数据库中也许会存在大量长期不被使用的索引,如果快速的定位这些索引以便清理便摆在案头.我们可以使用"alter index ××× monitoring usage;"命令将索引至于监控状态下,经过一定的监控周期,那些不被使用到的索引便会在具体Schema下的v$object_usage视图中得以体现.展示一下这个过程,供参考.友情提示:生产数据库中的索引添加和删除一定要慎重,需要做好充分的测试. 1.环境准备 --1.创建表T SQL>…

在 cd  /home/hadoop/hadoop-2.5.2/bin 下 执行的./hdfs namenode -format 报错[hadoop@node1 bin]$ ./hdfs namenode –format 16/07/11 09:21:21 INFO namenode.NameNode: STARTUP_MSG:/************************************************************STARTUP_MSG: Starting Na…

http://elinux.org/Device_Tree_Usage Device Tree Usage     Top Device Tree page This page walks through how to write a device tree for a new machine. It is intended to provide an overview of device tree concepts and how they are used to describe a mac…

在Java 7中增加了新的一个方法——probeContentType,其主要作用是可以判断文件的content type.相应代码如下所示: import java.io.IOException; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; public class FileContentType { public static void main(String[] arg…

昨天使用hadoop跑五一的数据,发现报错: Container [pid=,containerID=container_1453101066555_4130018_01_000067] GB physical memory used; GB virtual memory used. Killing container. 发现是内存溢出了,遇到这种问题首先要判断是map阶段溢出还是reduce阶段溢出,然后分别设置其内存的大小,比如: 在运行hive sql前加上 : (map) 或者 (red…

转载自:http://developer.android.com/intl/zh-cn/tools/debugging/debugging-memory.html Because Android is designed for mobile devices, you should always be careful about how much random-access memory (RAM) your app uses. Although Dalvik and ART perform ro…

import getopt import sys def usage(): print 'this is a usage.' def main(): try: print sys.argv #sys.argv[0],表示文件路径,sys.argv[1:],表示用户输入所有参数 #hp:i, 带有:表示需要跟参数,后面的长参数需要带‘=’ options,args = getopt.getopt(sys.argv[1:],"hp:i:",["help","i…

There are three DMVs you can use to track tempdb usage: sys.dm_db_task_space_usagesys.dm_db_session_space_usagesys.dm_db_file_space_usage The first two will allow you to track allocations at a query & session level. The third tracks allocations acros…

Get_File_Name is built-in function of Oracle Forms 6i, used to get the file name with address by browsing the file. You can browse a specific extension name file or with multiple extensions using wild cards.   In this example I am showing three diffe…

一个很奇怪的42000的错误,折腾了我一晚上.... 我的系统是Spring + SpringMVC + MyBatis结构, 数据库的mapper以及model等文件都是用MyBatisGenerator自动生成的,一切都很快就完成了. 我的表结构module如下: mysql> desc module; +----------+---------------+------+-----+---------+----------------+ | Field | Type | Null | Ke…

Random Usage sometimes, we hope to generate some random infor to manipulate our data structor. we can use random class to achieve this goal. the refer link in MSDN,Random example source using System; using System.Text; using System.Windows.Media; nam…

Shell script for logging cpu and memory usage of a Linux process http://www.unix.com/shell-programming-and-scripting/223177-shell-script-logging-cpu-memory-usage-linux-process.html…

du - estimate file space usage , 计算文件的磁盘大小 语法格式: du [OPTION] ... [FILE] 描述: 汇总每个文件的磁盘大小, 递归汇总目录的大小, 默认输出所有目录的大小, 默认的大小单位是k. 常用参数: -a : 输出所有文件的大小,不只有 目录 -b:按照字节为单位输出文件的大小 -c :增加一个汇总的total字段 -h :大小按照可读的格式输出, -S :不包括子目录的大小 -s: 只显示总大小 --exclude=PATTERN :…

Memory Usage On linux, there are commands for almost everything, because the gui might not be always available. When working on servers only shell access is available and everything has to be done from these commands. So today we shall be checking th…

The Linux “du” (Disk Usage) is a standard Unix/Linux command, used to check the information of disk usage of files and directories on a machine. The du command has many parameter options that can be used to get the results in many formats. The du com…

取消windows–>perferences–>general–>startup and shutdown里最下面的Subclipse Usage report 勾选即可…

Subversion clients receive the following error message when attempting to connect to VisualSVN Server: svn: OPTIONS of 'https://server.domain.local/svn/repo': SSL handshake failed: SSL error:Key usage violation in certificate has been detected. (http…

Many new learners can not make sure the usage scenarios of readonly and const keywords. In my opinion, the main reason of using readonly keyword is the efficiency. but in most occasions, efficiency isn’t treated as the high level. so I’m willing to u…

最近使用Swipe.js,发现中文的资料很少,试着翻译了一下.能力有限,翻译难免错漏,请指出,多谢!如果想获得国外较多而全的文档,还是用google. 一了解SwiperSwiper 是一款免费以及轻量级的移动设备触控滑块的框架,使用硬件加速过渡(如果该设备支持的话).主要使用与移动端的网站.网页应用程序(web apps),以及原生的应用程序(native apps).主要是为IOS而设计的,同时,在Android.WP8系统以及现代桌面浏览器也有着良好的用户体验. 特征(feature)1.…

Usage Scenarios The following sections describe some example scenarios on how to use CLI in applications. Using a boolean option A boolean option is represented on a command line by the presence of the option, i.e. if the option is found then the opt…

原地址: 报告 improper Advertising identifier [IDFA] Usage. Your app contains the Advertising Identifier [IDFA] API but you have not indicated its usage on the prepare for Upload page in iTunes Connect. http://www.cocoachina.com/bbs/read.php?tid=197462&pag…

This usage table lets usbhidctl decode the HID data correctly for the APC RS/XS1000's. This work was obtained from riccardo@torrini.org. Sample output is available both with and without the table. Note that the default /usr/share/misc/usb_hid_usages…