Added test and fix for the case if there is a semicolon between import statements.

src/main/resources/com/puppycrawl/tools/checkstyle/grammars/java.g

@@ -215,6 +215,7 @@ packageDefinition
 importDefinition
 	options {defaultErrorHandler = true;}
 	:	i:"import"^ {#i.setType(IMPORT);} ( "static" {#i.setType(STATIC_IMPORT);} )? identifierStar SEMI
+	|	SEMI
 	;
 
 // A type definition in a file is either a class, interface, enum of annotation definition

src/test/resources/com/puppycrawl/tools/checkstyle/grammars/SemicolonBetweenImports.java

@@ -0,0 +1,9 @@
+package com.puppycrawl.tools.checkstyle.grammars;
+
+import java.util.Arrays;
+;
+import java.util.ArrayList;
+
+public class SemicolonBetweenImports
+{
+}