JDBC教程 - JDBC選擇數(shù)據(jù)庫

以下代碼顯示如何使用JDBC連接URL選擇數(shù)據(jù)庫。

該代碼對JDBC連接URL中的數(shù)據(jù)庫名稱進行了硬編碼，如下所示。

jdbc:mysql://localhost/STUDENTS

例子

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

public class Main {
  static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
  static final String DB_URL = "jdbc:mysql://localhost/STUDENTS";

  static final String USER = "username";
  static final String PASS = "password";

  public static void main(String[] args) throws Exception {
    Connection conn = null;
    Statement stmt = null;

    Class.forName(JDBC_DRIVER);
    conn = DriverManager.getConnection(DB_URL, USER, PASS);

    stmt.close();
    conn.close();
  }
}