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昨天被问到什么叫DDL,DML时没反应过来，以前的数据库基础都交给老师了...Data Define Language ,Data Manipulate Language行级锁和表级锁的概念也是的...共享锁和互斥锁...在开发的时候离开了概念的指导有时候还是会很麻烦的 阅读全文
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The SAP R/3 system presents a Windows interface with several of the familiar Windows functions for screen manipulation. The apparent simplicity of the interf ace hides the power of the menus residing ... 阅读全文
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Purpose The POI project consists of APIs for manipulating various file formats based upon Microsoft's OLE 2 Compound Document format using pure Java. In short, you can read and write MS Excel files u... 阅读全文
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import org.apache.poi.hssf.usermodel.*;导入POI后调用HSSFWorkbook对象，示例为: try{ // 创建对Excel工作簿文件的引用 FileInputStream fin=new FileInputStream(fname); File fexcel =new File(fname); try{ HS... 阅读全文