JDBC 연결

MySQL JDBC 연결

import java.sql.Connection;
import java.sql.DriverManager;

public class Test {
  public static void main(String[] args) throws Exception {
    Connection conn = null;
    try {
      Class.forName("org.gjt.mm.mysql.Driver"); 
      conn = DriverManager.getConnection("jdbc:mysql://localhost:5515/dbname?user=id&useUnicode=true&characterEncoding=UTF8", "id", "pw");
    } catch (Exception e) {
      e.printStackTrace();
      if (conn!=null) try { conn.close(); } catch (Exception e2) { }
    }
  }
}

Oracle thin

import java.sql.Connection;
import java.sql.DriverManager;

public class Test {
  public static void main(String[] args) throws Exception {
    Connection conn = null;
    try {
      Class.forName("oracle.jdbc.driver.OracleDriver"); 
      conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe", "scott", "tiger");
      
      System.out.println(conn);
      
    } catch (Exception e) {
      e.printStackTrace();
      if (conn!=null) try { conn.close(); } catch (Exception e2) { }
    }
  }
}

Oracle OCI

import java.sql.Connection;
import java.sql.DriverManager;

public class TestOCI {
  public static void main(String[] args) throws Exception {
    Connection conn = null;
    try {
      Class.forName("oracle.jdbc.driver.OracleDriver"); 
      conn = DriverManager.getConnection("jdbc:oracle:oci:@xe", "scott", "tiger");
      
      System.out.println(conn);
      
    } catch (Exception e) {
      e.printStackTrace();
      if (conn!=null) try { conn.close(); } catch (Exception e2) { }
    }
  }
}