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// java.sql.* Paketini Kullanın
import java.sql.*;

public class DB
{
// Bağlantı Cumlesi (ConnectionString)
String cS = "jdbc:mysql://localhost/java_egitimi";

// Veritabanı Bağlantısını Sağlamak İçin
Connection conn;

// Constructor Bir Hata Olursa
// Constructor'in Cagrildigi Yerde
// İlgilen
public DB() throws Exception
{
// Sürücü Sınıfını Belleğe Yükle
Class.forName("org.gjt.mm.mysql.Driver");

// Bağlantıyı Aç
conn = DriverManager.getConnection(cS,"root","");
}

public void kisiEkle(String ad, String yas)
throws Exception
{
// insert into kisiler values (0, 'Emir', 33);
String sql = String.format(
"insert into kisiler values (0, '%s', '%s')"
, ad, yas);
System.out.println("Kisi Eklemek Icin QUERY : "+sql);
// Yeni Bir Sorgu Olustur
Statement sorgu = conn.createStatement();
// INS,DEL,UPD Gibi Sonuc Dondurmeyen Sorgular
// execute(..), Select, SHOW Gibi Sonuc Donduren
// Sorgular executeQuery(...) Methoduyla Calistirilir
sorgu.execute(sql);
}

public void kisiSil(String id) throws Exception
{
String sql = String.format("delete from kisiler where id = %s",id);
System.out.println("Kisi Silmek Icin QUERY : "+sql);
conn.createStatement().execute(sql);
}

public void kisiGuncelle(String id, String ad, String yas) throws Exception
{
// update kisiler set ad = 'Hasan', yas = 44 where id = 34;
String sql = String.format(
"update kisiler set ad = '%s', yas = '%s' where id = '%s'",
ad, yas, id);
System.out.println("Kisi Guncellemek Icin QUERY : "+sql);
conn.createStatement().execute(sql);
}

public ResultSet getKisi(String id) throws Exception
{
String sql =
String.format("select * from kisiler where id = %s", id);

System.out.println("Get Kisi Icin QUERY : "+sql);
ResultSet sonuc = conn.createStatement().executeQuery(sql);
return sonuc;
}

public ResultSet getKisiler() throws Exception
{
System.out.println("Get Kisiler Icin QUERY : select * from kisiler");
return conn.createStatement()
.executeQuery("select * from kisiler");
}

}
     
 
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