Java JDBC - 如何将JDBC连接到tns oracle

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class Main {
  public static void main(String[] args) throws Exception {
    System.setProperty("oracle.net.tns_admin",
        "C:/app/product/11.2.0/client_1/NETWORK/ADMIN");
    String dbURL = "jdbc:oracle:thin:@ENTRY_FROM_TNSNAMES";

    Class.forName("oracle.jdbc.OracleDriver");

    Connection conn = DriverManager.getConnection(dbURL, "your_user_name",
        "your_password");

    System.out.println("Connection established");

    Statement stmt = conn.createStatement();

    ResultSet rs = stmt.executeQuery("SELECT dummy FROM dual");

    if (rs.next()) {
      System.out.println(rs.getString(1));
    }
    stmt.close();
    conn.close();
  }
}