style: prepare for upcoming Checkstyle release 8.28 (#1654)

pgjdbc/src/main/checkstyle/checks.xml

@@ -165,10 +165,11 @@
     <module name="OverloadMethodsDeclarationOrder"/>
     <module name="VariableDeclarationUsageDistance"/>-->
     <module name="CustomImportOrder">
-      <property name="specialImportsRegExp" value="org.postgresql"/>
+      <property name="standardPackageRegExp" value="^java\."/>
+      <property name="specialImportsRegExp" value="^javax\."/>
       <property name="sortImportsInGroupAlphabetically" value="true"/>
       <property name="customImportOrderRules"
-                value="STATIC###SPECIAL_IMPORTS###THIRD_PARTY_PACKAGE###STANDARD_JAVA_PACKAGE"/>
+                value="STATIC###SAME_PACKAGE(2)###THIRD_PARTY_PACKAGE###STANDARD_JAVA_PACKAGE###SPECIAL_IMPORTS"/>
     </module>
 
     <!-- Import should be explicit, and only from pure java packages.

pgjdbc/src/main/java/org/postgresql/PGConnection.java

@@ -16,7 +16,6 @@
 import java.sql.Array;
 import java.sql.SQLException;
 import java.sql.Statement;
-
 import java.util.Map;
 
 /**

pgjdbc/src/main/java/org/postgresql/core/PGStream.java

@@ -23,6 +23,7 @@
 import java.net.Socket;
 import java.net.SocketTimeoutException;
 import java.sql.SQLException;
+
 import javax.net.SocketFactory;
 
 /**

pgjdbc/src/main/java/org/postgresql/core/v3/ConnectionFactoryImpl.java

@@ -43,6 +43,7 @@
 import java.util.logging.Level;
 import java.util.logging.LogRecord;
 import java.util.logging.Logger;
+
 import javax.net.SocketFactory;
 
 /**

pgjdbc/src/main/java/org/postgresql/jdbc/PgDatabaseMetaData.java

@@ -26,7 +26,6 @@
 import java.sql.Types;
 import java.util.ArrayList;
 import java.util.Arrays;
-
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.HashMap;

pgjdbc/src/main/java/org/postgresql/ssl/DefaultJavaSSLFactory.java

@@ -6,6 +6,7 @@
 package org.postgresql.ssl;
 
 import java.util.Properties;
+
 import javax.net.ssl.SSLSocketFactory;
 
 /**

pgjdbc/src/main/java/org/postgresql/ssl/LibPQFactory.java

@@ -25,6 +25,7 @@
 import java.security.cert.Certificate;
 import java.security.cert.CertificateFactory;
 import java.util.Properties;
+
 import javax.net.ssl.KeyManager;
 import javax.net.ssl.SSLContext;
 import javax.net.ssl.TrustManager;

pgjdbc/src/main/java/org/postgresql/ssl/MakeSSL.java

@@ -18,6 +18,7 @@
 import java.util.Properties;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+
 import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.SSLSocket;
 import javax.net.ssl.SSLSocketFactory;

pgjdbc/src/main/java/org/postgresql/ssl/PGjdbcHostnameVerifier.java

@@ -17,6 +17,7 @@
 import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+
 import javax.naming.InvalidNameException;
 import javax.naming.ldap.LdapName;
 import javax.naming.ldap.Rdn;

pgjdbc/src/main/java/org/postgresql/ssl/jdbc4/LibPQFactory.java

@@ -11,6 +11,7 @@
 
 import java.net.IDN;
 import java.util.Properties;
+
 import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.SSLSession;
 

pgjdbc/src/main/java/org/postgresql/util/WriterHandler.java

@@ -20,7 +20,6 @@
 package org.postgresql.util;
 
 import java.io.Writer;
-
 import java.util.logging.ErrorManager;
 import java.util.logging.Formatter;
 import java.util.logging.Handler;

pgjdbc/src/test/java/org/postgresql/test/jdbc2/ParameterStatusTest.java

@@ -10,7 +10,6 @@
 import org.postgresql.test.TestUtil;
 
 import org.hamcrest.core.StringStartsWith;
-
 import org.junit.Assert;
 import org.junit.Test;
 

pgjdbc/src/test/java/org/postgresql/test/jdbc2/optional/BaseDataSourceFailoverUrlsTest.java

@@ -12,6 +12,7 @@
 import org.junit.Test;
 
 import java.io.IOException;
+
 import javax.naming.NamingException;
 
 /**

pgjdbc/src/test/java/org/postgresql/test/jdbc4/JsonbTest.java

@@ -9,7 +9,6 @@
 import static org.junit.Assert.assertTrue;
 
 import org.postgresql.core.ServerVersion;
-
 import org.postgresql.test.TestUtil;
 import org.postgresql.test.jdbc2.BaseTest4;
 

pgjdbc/src/test/java/org/postgresql/test/jdbc4/XmlTest.java

@@ -15,7 +15,6 @@
 import org.postgresql.test.jdbc2.BaseTest4;
 
 import org.junit.Test;
-
 import org.w3c.dom.Node;
 
 import java.io.IOException;

pgjdbc/src/test/java/org/postgresql/test/ssl/SslTest.java

@@ -27,6 +27,7 @@
 import java.util.Collections;
 import java.util.List;
 import java.util.Properties;
+
 import javax.net.ssl.SSLHandshakeException;
 
 @RunWith(Parameterized.class)