(Reproduced: http://www.hollischuang.com/archives/1606)GitHub Address: Https://github.com/liufeiSAP/javaStudy.gitIn Java, there are a number of more useful class libraries, and they usually define a series of methods with common functionality. This article summarizes the most common Java utility classes and their most commonly used methods. Methods in both classes and classes are sorted by popularity.The classes and methods listed in this paper are co
Utility tools under Linux--calculators
1. BC Instruction addition,
4. BC Instruction Division (advanced), shown, 10/3 is 3, because we do not specify a decimal point after a few, the default is taken to the integer part, and 10/100 is zero, the same reason, only to take the integer 0 part. Use the "scale=[number" command to specify a few points after the decimal point:The BC Command calculates the remainder,
6. BC Command Count index,
Failure phenomenon:
Lenovo Security Bulletin: LEN-9458
Potential impact: After running the Security cleanup utility, it is possible to recover drive data.
Severity: Medium
Impact Range: Lenovo-specific products
Summary description:
The Toshiba firmware used to clear the data on the following SSD does not conform to the Lenovo specification and is now determined to run the
Workaround:There are several ways to deal with this situation:1, the purchase of Third-party software (generally estimated that very few people buy)2, their own programming a small software to carry out, but this logic requirements are relatively high, and programming ability to have a certain level, this I temporarily did not.3, using the method introduced in this article, as to what is, then look:execute multiple scripts on SQL Server using sqlcmd :Sqlcmd: Use the sqlcmd
The osql tool allows you to enter T_SQL statements, system procedures, and text files, osql communicate with the server using ODBC
The osql utility allows to enter Transact-SQL statements, system procedures, and script files. This utility uses ODBC to communicate with the server.
Grammar:
osql
[-?] |
[-L] |
[
{
{-U login_id [p password]}
| E
[-S Server_name[\instance_name]] [H Wksta_name] [-D db_name]
[-L
Tags: 2.3 should convert int pre SSI TTY expression dataPowerShell has become a skill that Windows Ops people have to master, his strength is only used to realize, gossip not to say, here to record the PowerShell of the utility commands, help in the PowerShell struggle between the children's shoes Turn the result of the output into the type of object you want, for example, I have a decimal, but I just want his integer digits, here we can use the-as op
skip the password2, keep the cmd of the previous step does not close, the administrator runs another cmd, directly enter Mysql-u root-p Enter, display the input password, the direct return can be password-free login3, you can change the root password in the second cmd (see two).Note: The process MySQL does not have a net start MySQL operation.Four, net start MySQL when there is no startCheck to see if it is started, or if there is a mysqld.exe process running in the process.MyEclipse Database E
Cold backup:
Cold backup is completed in archive mode.
Close Database
Back up all data files, initialization parameter files, control files, redo logs, and archived redo logs.Parameter file: Show parameter spfile;Control File: Select * from V $ controlfile;Redo log file: Select * from V $ logfile;Archive log files: Select sequence #, first_time v $ loghist;
Hot Bac
Release date:Updated on:
Affected Systems:NEC Universal RAID UtilityDescription:--------------------------------------------------------------------------------Bugtraq id: 58087CVE (CAN) ID: CVE-2013-0706Universal RAID Utility is a software for managing RAID controllers.The NEC Universal RAID Utility does not have access restrictions and allows remote attackers to perform any RAID disk operations through T
packet, so far, route tracking between host A and host B is implemented.
Through the preceding parsing of the datagram, we can see that the Tracert command controls the TTL of the IP Message to implement route tracking to provide information about each hop from the router to the destination address. The ICMP echo request packet whose TTL is equal to 1 is sent first. The first vro in the path will discard the packet and send the packet back to the ICMP timeout error message. Then, each sending p
With D-Link Airplus Utility, you can set a wireless network card and connect to a wireless network. The method is as follows:1. Right-click my computer on the desktop and choose manage.2. Click services and services in the application, and click Wireless Zero Configuration.3. Right-click Wireless Zero Configuration, and click STOP-OK.4. Click the application on the desktop.5. Enter the D-Link router wireless management program. Www.2cto.com6. Click th
Solution:There are several methods to deal with this situation:1. Buy third-party software (usually few people buy it)2. I have to program a small software for execution, but this logic requirement is high and the programming capability must be at a certain level. I do not have this yet.3. Use the method described in this article:Use SQLCMD to execute multiple scripts on SQLServer:SQLCMD: The sqlcmd utility can be used to query the editor at a command
Failure phenomenon:
Lenovo Security Bulletin: LEN-5595
Potential impact: After running the Security cleanup utility, drive data may be restored.
Severity: Medium
Scope of Influence: Lenovo
Summary description:
The SanDisk firmware used to clear the data in these SSD does not conform to the specifications of Lenovo. It has been confirmed that, in some cases, the data in the affected SanDisk drive may be restored, even after running the ThinkPad D
visually displays HTML, CSS, and JavaScript execution, as well as important marginal effects on layout and garbage collection, to help you gain insight into the internal work of IE. You can strategically advantageous position and accurately understand the responsiveness of your application and the smoothness of your presentation. In order to identify the specific reasons affecting the performance of the application, more targeted to optimize the application.Skilled use of the UI response tool c
Share: I will not talk about the benefits of using the cos-html-cache static utility for WordPress. I have found several static WordPress methods on the Internet, cos-html-cache is found to be relatively reliable, but the installation method is not detailed enough in the plug-in instructions. I will add the following: 1. download the plug-in: in the "plug-in" section of the background management, click "Add new plug-in" to share: how to use the static
Redis Advanced Utility Features4. Persistence mechanismRedis is an in-memory database that supports persistence, which means that Redis often needs to synchronize the in-memory data to the hard disk to ensure persistence.Redis supports two persistence modes:(1), snapshotting (snapshot) is also the default mode.A snapshot is the default persistence method, which writes in- memory data to a binary file in the form of a snapshot, with the default file na
PHP utility functions, PHP functions
For the first time, write some of the more useful functions of your own work.
Array functions:
1 Array_column--Returns the column specified in the array
Usage One: Returns the column specified in the array
Application scenario: Take out the class ID and go to other tables to find out other information about the students.
Benefit: Reduce the number of queries to the database (all information is detected once by ID)
Do you still remember the last time Maxthon changed the UA event? UA is a request sent by the browser to indicate its identity to the server. It not only allows the website to collect statistics on visitor browser information, on some websites, different pages are specially designed for different UA to obtain the best display effect, while IE7 has not yet been released.CodeIf you only want to access IE6, there may be some compatibility issues or even access failure. In this case, you can use thi
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