Connection con=...;
Statement stmt=...;
try{
con=...;
stmt=...;
}
catch(Exception ece){
....
}
finnally{
try {
con.close();
stmt.close();
}
catch(Exception e) {
}
}
Statement stmt=...;
try{
con=...;
stmt=...;
}
catch(Exception ece){
....
}
finnally{
try {
con.close();
stmt.close();
}
catch(Exception e) {
}
}
if( con != null){
try{
con.close();
..............
}catch(Exception ece){
// 不作任何事情,因为con已经over了
}
}