Create database readers;
Use readers;

CREATE TABLE reader
(
Name varchar(265),
Surname varchar(255),
City varchar(255),
Capital varchar(255)
);

Class.forName("com.mysql.jdbc.Driver");

            //Connect to DB server
            Connection connection =
                    DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/?user=root/autoReconnect=true&useSSL=false","root","password");

            System.out.println("Connected to MySQL");

            //Create Prepared Statement
            PreparedStatement statement =
                    connection.prepareStatement("insert into readers (Name,Surname,City,Capital) values(?,?,?,?)");

Connected to MySQL
java.sql.SQLException: No database selected
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3878)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3814)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2478)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2625)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2551)
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1861)
    at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1192)
    at edu.sabanciuniv.ReadWriteThread.run(ReadWriteThread.java:57)

jdbc:mysql://[host1][:port1][,[host2][:port2]]...[/[database]] [?propertyName1=propertyValue1[&propertyName2=propertyValue2]...]