用try{...}catch{....}捕作异常。import java.sql.*; 
import java.lang.*; 
public class Databaseapp{ public static void main(String args[]){ 
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); 
Connection myconnection=DriverManager.getConnection("jdbc:odbc:estdb","sa",""); 
Statement mystatement=myconnection.createStatement(); 
ResultSet query=mystatement.executeQuery("select * from est_info"); 
while (query.next()) 
System.out.println(query.getString("est_id")+query.getString("est_name")); 
}catch(Exception e){
System.out.println("Error:"+e.toString());
}
} }