static final String CONN_STRING = "jdbc:mysql://localhost:3306/test";

java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
підключення до бд
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:121)
    at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)
    at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:819)
    at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:440)
    at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:239)
    at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:188)
    at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:681)
    at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:229)
    at library.ConnectionDB.<init>(ConnectionDB.java:19)
    at library.ConnectionDB.main(ConnectionDB.java:37)

public ConnectionDB(String sourge){
        try (Connection conn = DriverManager.getConnection(
                "jdbc:mysql://127.0.0.1:3306/test?autoReconnect=true&useSSL=true", "root", "12345")) {

            if (conn != null) {
                System.out.println("Connected to the database!");
            } else {
                System.out.println("Failed to make connection!");
            }

        } catch (SQLException e) {
            System.err.format("SQL State: %s\n%s", e.getSQLState(), e.getMessage());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }//end constructor

SQL State: 08001
Could not create connection to database server. Attempted reconnect 3 times. Giving up.підключення до бд