Cannot retrieve the data from excel sheet

hi all ...
i am trying to retrieve the data from excel sheet and at the same time i am inserting the data into mysql database.
code is as follows
try{             Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");             conn1=DriverManager.getConnection("jdbc:odbc:"+estr,"","");             Class.forName("com.mysql.jdbc.Driver");             conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/"+ t_dsn ,"root","manager");             sql="select * from student_info";             srch2 = conn.prepareStatement(sql);             rs1 = srch2.executeQuery();             String query  = "select * from ["+einput+"$]";             String query1= "select  count(*) from ["+einput+"$]";             st  = conn1.createStatement();             rs  = st.executeQuery(query);             ResultSetMetaData rsmd = rs.getMetaData();             c = rsmd.getColumnCount();//gets the column count             rs1  = st.executeQuery(query1);             while (  //loop to get no. of rows             {                 r = rs1.getInt(1);             }             rs = st.executeQuery(query);             for(i=1;i<=r;i++){       ;                 for(j=1;j==c;j++) {                     a = rs.getString(j);                     b= rs.getString(j);                     d = rs.getString(j);                 }       ;                 PreparedStatement ps2 = conn.prepareStatement("insert into materials_out values(?,?,?)");                 ps2.setString(1,a);                 ps2.setString(2,b);                 ps2.setString(3,d);                 ps2.executeUpdate();             }         }catch(Exception e){             e.printStackTrace();         }
but it is showing error as :
java.sql.SQLException: [Microsoft][ODBC Driver Manager] Data source name too long
at sun.jdbc.odbc.JdbcOdbc.createSQLException(
at sun.jdbc.odbc.JdbcOdbc.standardError(
at sun.jdbc.odbc.JdbcOdbc.SQLDriverConnect(
at sun.jdbc.odbc.JdbcOdbcConnection.initialize(
at sun.jdbc.odbc.JdbcOdbcDriver.connect(
at java.sql.DriverManager.getConnection(
at java.sql.DriverManager.getConnection(
at Outward_register.jButton2ActionPerformed(
at Outward_register.access$400(
at Outward_register$5.actionPerformed(
at javax.swing.AbstractButton.fireActionPerformed(
at javax.swing.AbstractButton$Handler.actionPerformed(
at javax.swing.DefaultButtonModel.fireActionPerformed(
at javax.swing.DefaultButtonModel.setPressed(
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(
at java.awt.Component.processMouseEvent(
at javax.swing.JComponent.processMouseEvent(
at java.awt.Component.processEvent(
at java.awt.Container.processEvent(
at java.awt.Component.dispatchEventImpl(
at java.awt.Container.dispatchEventImpl(
at java.awt.Component.dispatchEvent(
at java.awt.LightweightDispatcher.retargetMouseEvent(
at java.awt.LightweightDispatcher.processMouseEvent(
at java.awt.LightweightDispatcher.dispatchEvent(
at java.awt.Container.dispatchEventImpl(
at java.awt.Window.dispatchEventImpl(
at java.awt.Component.dispatchEvent(
at java.awt.EventQueue.dispatchEvent(
at java.awt.EventDispatchThread.pumpOneEventForFilters(
at java.awt.EventDispatchThread.pumpEventsForFilter(
at java.awt.EventDispatchThread.pumpEventsForHierarchy(
at java.awt.EventDispatchThread.pumpEvents(
at java.awt.EventDispatchThread.pumpEvents(
please help me ...

please help me ... The question has nothing to do with 'getting' data from excel and certainly not with putting it into MySQL.
The stack trace specifically tells you that your connection string is wrong.
It also tells you which connection string is wrong.
Which you can use to determine specifically which one is wrong. And which you did not provide that info to us.

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