java how to connect sql server2008

learning java connect to the database , the following problems encountered

adding that three packets before the question is just : java.lang.ClassNotFoundException: jdbc.microsoft.sqlserver :/ / 127.0.0.1:1433; databaseName = spdb1


added followed by : java.sql.SQLException: No suitable driver found for jdbc.microsoft.sqlserver :/ / 127.0.0.1:1433; databaseName = spdb1

requested understand friends , heroes tell me , hoping to understand the point to say thank you !

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no suitable driver . com.microsoft.jdbc.sqlserver.SQLServerDriver
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project configuration to increase library file
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quickly hung up . . . They might engage in a day ! ! . . . . . . . Hey novices. . . . . . . . . . . . . . 00,
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to that can be used under or how to use ah put where I put JDBC2.0, 3.0,4.0 ; they have made of them. . . . . Depressed ah

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Although now a .... but still thankyousomuch ^ ^