dependencies: #2449 bump maven-checkstyle-plugin from 3.1.0 to 3.2.0 + resolve chec… (#2464)

* #2449 bump maven-checkstyle-plugin from 3.1.0 to 3.2.0 + resolve checkstyle issues

* remove FileSelectorJFrame.java to resolve checkstyle issue

* remove FileSelectorJFrame.java to resolve checkstyle issue

* remove FileSelectorJFrame.java to resolve checkstyle issue

* add refactored file with correct filename to resolve checkstyle issue

* add the test data

* change filenames from JFrame to Jframe for checkstyle

* fix code smell from  sonar report

* add new testcases to improve the test coverage

* remove code smell

domain-model/src/test/java/com/iluwatar/domainmodel/CustomerDaoImplTest.java

@@ -29,7 +29,6 @@ import org.joda.money.Money;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
-
 import javax.sql.DataSource;
 import java.sql.ResultSet;
 import java.sql.SQLException;

domain-model/src/test/java/com/iluwatar/domainmodel/CustomerTest.java

@@ -28,7 +28,6 @@ import org.joda.money.CurrencyUnit;
 import org.joda.money.Money;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
-
 import java.sql.SQLException;
 import java.time.LocalDate;
 import java.util.ArrayList;

domain-model/src/test/java/com/iluwatar/domainmodel/ProductDaoImplTest.java

@@ -28,7 +28,6 @@ import org.joda.money.Money;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
-
 import javax.sql.DataSource;
 import java.sql.ResultSet;
 import java.sql.SQLException;

domain-model/src/test/java/com/iluwatar/domainmodel/ProductTest.java

@@ -27,7 +27,6 @@ package com.iluwatar.domainmodel;
 import org.joda.money.Money;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
-
 import java.sql.SQLException;
 import java.time.LocalDate;
 import java.util.Optional;

domain-model/src/test/java/com/iluwatar/domainmodel/TestUtils.java

@@ -25,7 +25,6 @@
 package com.iluwatar.domainmodel;
 
 import org.h2.jdbcx.JdbcDataSource;
-
 import javax.sql.DataSource;
 import java.sql.SQLException;