Issue #3157: Javadoc value tag can reference import (#3158)

src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocTag.java

@@ -142,6 +142,7 @@ public class JavadocTag {
     public boolean canReferenceImports() {
         return tagInfo == JavadocTagInfo.SEE
                 || tagInfo == JavadocTagInfo.LINK
+                || tagInfo == JavadocTagInfo.VALUE
                 || tagInfo == JavadocTagInfo.LINKPLAIN
                 || tagInfo == JavadocTagInfo.THROWS
                 || tagInfo == JavadocTagInfo.EXCEPTION;

src/test/java/com/puppycrawl/tools/checkstyle/checks/imports/UnusedImportsCheckTest.java

@@ -104,6 +104,13 @@ public class UnusedImportsCheckTest extends BaseCheckTestSupport {
         verify(checkConfig, getPath("InputUnusedImports.java"), expected);
     }
 
+    @Test
+    public void testProcessJavadocWithLinkTag() throws Exception {
+        final DefaultConfiguration checkConfig = createCheckConfig(UnusedImportsCheck.class);
+        final String[] expected = CommonUtils.EMPTY_STRING_ARRAY;
+        verify(checkConfig, getPath("InputUnusedImportWithValueTag.java"), expected);
+    }
+
     @Test
     public void testAnnotations() throws Exception {
         final DefaultConfiguration checkConfig = createCheckConfig(UnusedImportsCheck.class);

src/test/resources/com/puppycrawl/tools/checkstyle/checks/imports/InputUnusedImportWithValueTag.java

@@ -0,0 +1,15 @@
+package com.puppycrawl.tools.checkstyle.checks.imports;
+
+import java.util.Calendar;
+
+public class InputUnusedImportWithValueTag {
+
+    /**
+     * Method determines current month as for {@value Calendar#MONTH}.
+     *
+     * @return index of the current month.
+     */
+    public int currentMonth() {
+        return 1;
+    }
+}