help无法打开登录 'test' 中请求的数据库。登录失败。

Question

D:\Borland\JBuilder2006\jdk1.5\bin\javaw -classpath "C:\Documents and Settings\yi\jbproject\untitled1\classes;C:\Program Files\Microsoft SQL Server 2000 Driver for JDBC\lib\mssqlserver.jar;C:\Program Files\Microsoft SQL Server 2000 Driver for JDBC\lib\msutil.jar;C:\Program Files\Microsoft SQL Server 2000 Driver for JDBC\lib\msbase.jar;D:\Borland\JBuilder2006\jdk1.5\lib\dt.jar;D:\Borland\JBuilder2006\jdk1.5\lib\tools.jar;D:\Borland\JBuilder2006\jdk1.5\lib\htmlconverter.jar;D:\Borland\JBuilder2006\jdk1.5\lib\jconsole.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\javaws.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\ext\sunjce_provider.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\ext\localedata.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\ext\sunpkcs11.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\ext\dnsns.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\plugin.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\deploy.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\im\thaiim.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\im\indicim.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\charsets.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\jsse.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\rt.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\jce.jar"  CourseAppl 
java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]无法打开登录 'test' 中请求的数据库。登录失败。
at com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source)
at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
at com.microsoft.jdbc.sqlserver.tds.TDSRequest.processErrorToken(Unknown Source)
at com.microsoft.jdbc.sqlserver.tds.TDSRequest.processReplyToken(Unknown Source)
at com.microsoft.jdbc.sqlserver.tds.TDSLoginRequest.processReplyToken(Unknown Source)
at com.microsoft.jdbc.sqlserver.tds.TDSRequest.processReply(Unknown Source)
at com.microsoft.jdbc.sqlserver.SQLServerImplConnection.open(Unknown Source)
at com.microsoft.jdbc.base.BaseConnection.getNewImplConnection(Unknown Source)
at com.microsoft.jdbc.base.BaseConnection.open(Unknown Source)
at com.microsoft.jdbc.base.BaseDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at CourseAppl.getConnection(CourseAppl.java:61)
at CourseAppl.display(CourseAppl.java:80)
at CourseAppl.main(CourseAppl.java:111)
Exception in thread "main" java.lang.NullPointerException
at CourseAppl.display(CourseAppl.java:81)
at CourseAppl.main(CourseAppl.java:111)
Error Trace in getConnection() : [Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]无法打开登录 'test' 中请求的数据库。登录失败。