Reduce visibility

src/main/java/table_view/JDBCDialect.java

 package table_view;
 
-public interface JDBCDialect {
+interface JDBCDialect {
 	String getDriverClazzName();
 	String getDriverID();
 	String getCreateTable();

src/main/java/table_view/Person.java

@@ -2,7 +2,7 @@ package table_view;
 
 import javafx.beans.property.SimpleStringProperty;
 
-public class Person {
+class Person {
 
 	private final Long id;
     private final SimpleStringProperty firstName;

src/main/java/table_view/PersonDAO.java

@@ -9,8 +9,7 @@ import java.sql.Statement;
 import java.util.Collection;
 import java.util.LinkedList;
 
-
-public class PersonDAO implements AutoCloseable{
+class PersonDAO implements AutoCloseable{
 
 	private static final String INSERT_SQL = "INSERT INTO person(first_name, last_name, email) values (?,?,?)";
 

src/main/java/table_view/PostgresqlJDBCDialect.java

 package table_view;
 
-public class PostgresqlJDBCDialect implements JDBCDialect{
+class PostgresqlJDBCDialect implements JDBCDialect{
 
 	@Override
 	public String getDriverClazzName() {