用JavaBean编写SQL Server数据库连接类

//类conn.db.conndb.java package conn.db; import java.sql.*; public class conndb {  connection conn;  resultset rs;  private int count;  public conndb() {  try {  class.forname("sun.jdbc.odbc.jdbcodbcdriver");   } catch (exception ex) {}  }  public resultset executequery(string sql){  try {  conn=drivermanager.getconnection("jdbc:odbc:mysql","dxaw","123");  statement stat=conn.createstatement(resultset.type_scroll_sensitive, resultset.concur_updatable);  rs=stat.executequery(sql);  } catch (exception ex1) {  }  return rs;  }  public void executeupdate(string sql){  try {  conn = drivermanager.getconnection("jdbc:odbc:mysql", "dxaw","123");  statement stat=conn.createstatement();  stat.executequery(sql);  } catch (exception ex2) {  }  } }