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Chapter 2 attracting your attention-UI programming (8), chapter 2 ui2.4 call for the Menu key-Menu Friends who use Android phones should be familiar with the "Menu" Key of their phones. It is convenient and convenient to use, and does not need to occupy the application interface. Thanks to these features, many applications now use the Menu-Menu key. There are sev

Error messageInvalid byte 1 of 1-byte UTF-8 sequenceCause analysisIn Windows of the Chinese version, java is encoded as GBK by default, that is, although we have identified that we want to save xml in UTF-8 format, the files are actually saved in GBK format, so that is why we can use GBK, GB2312 encoding to generate xm

Error MessageInvalid byte 1 of 1-byte UTF-8 sequenceCause AnalysisIn Windows of the Chinese version, java is encoded as GBK by default, that is, although we have identified that we want to save xml in UTF-8 format, the files are actually saved in GBK format, so that is why we can use GBK, GB2312 encoding to generate xm

Error tipsInvalid byte 1 of 1-byte UTF-8 sequenceCause analysisIn the Chinese version of Windows, the default encoding of Java is GBK, which means that although we identify the XML to be saved as Utf-8 format but actually the file is saved in GBK format, so that's why we can use GBK, GB2312 encoding to generate XML fil

An exception occurred writing to an XML fileWorkaround: Use Notepad to open the XML file, save As, encode select UTF-8Byte 1 of the UTF-8 sequence of the java.lang.runtimeexception:org.dom4j.documentexception:1 byte is invalid.At Cn.itcast.user.dao.UserDao.add (userdao.java:65)At Test.dao.UserDaoTest.testAdd (userdaotest.java:23)At Sun.reflect.NativeMethodAccesso

1 Public Static voidMain (string[] args) {2 Doublen = 1, sum = 0;3 while(N ) {4sum + = 1/factorial (n);5n++;6 }7 System.out.println (sum);8 9 }Ten One Static DoubleFactorial (Doublem) { A if(m = =

Regular Expression of phone number (mobile phone number, 3-4 area code, 7-8 live video number, 1-4 extension code) (\ D {11}) | ^ (\ d {7, 8}) | (\ d {4} | \ d {3})-(\ d {7, 8 }) | (\ d {4} | \ d {3})-(\ d {7, 8 }) -(\ d {4} | \ d {3} | \ d {

In. NET Framework 2.0, the membershipprovider class roleprovider class is provided for our applications. Program Provides authentication and authorization services .. Net Framework 2.0 provides sqlmembershipprovider and roleprovider implemented based on SQL Server by default. To use membership implemented based on other databases, you must implement membershipprovider and roleprovider by yourself. In nhib.pdf, you only need to modify the configuration file to support multiple databases. If nhib

At present, I have 12 interfaces on hand in the outdoor 1/4 sweep Unit board, the initial understanding of the interface: OE is display enable, AB is row selectable, default high = 4 lines, all low = 1 rows, a low = 2 rows, b low = 3 rows. R is serial data, S is serial clock, L is latch and shift. To lsbfirst low-level output light, that is, Common Yang. It is wo