java - Encoding problems in database -

i have postgres 9.2 database, encoding utf-8. have application(written in java) update database, reading .sql files , executing them in database. found problem: in 1 of .sql files, have following instruction:

insert usuario(nome) values('usuário padrão'); 

after executing this, when go table data, inserted this: "usuário padrão"

if execute command directly pgadmin, creates correctly. don't know if it's problem in database, or in program executes scripts.

---edit---

here how jdbc connection:

public static connection getconnection() throws sqlexception{     connection connection;     string url="jdbc:postgresql://"+servidor+":"+porta+"/"+nomebanco;     properties props = new properties();       props.put("user", usuario);       props.put("password", senha);     connection=drivermanager.getconnection(url,props);     connection.setautocommit(false);     return connection; } 

and here code use read file, looks correct, because if print string read file, shows correct string.

public static string lerarquivo(file arquivo){     stringbuilder conteudo=new stringbuilder();     bufferedreader br = null;     try {         br=new bufferedreader(new filereader(arquivo));         string linha;         while((linha=br.readline())!=null){             conteudo.append(linha).append("\n");         }     } catch (ioexception e) {         frameerrobasico f=new frameerrobasico(null, true);         f.settext("erro ao ler arquivo.",e);         f.setvisible(true);     }finally{         try{br.close();}catch(exception e){}     }     return conteudo.tostring(); } 

this problematic line:

    br=new bufferedreader(new inputstreamreader(new fileinputstream(arquivo), "utf-8")); 

(looks crystal ball still working well!)