diff --git a/src/main/java/org/codelibs/fess/app/service/JobLogService.java b/src/main/java/org/codelibs/fess/app/service/JobLogService.java
index c0d553ba3..2f077fe87 100644
--- a/src/main/java/org/codelibs/fess/app/service/JobLogService.java
+++ b/src/main/java/org/codelibs/fess/app/service/JobLogService.java
@@ -88,7 +88,7 @@ public class JobLogService implements Serializable {
     }
 
     public void deleteBefore(final int days) {
-        final long oneday = 24 * 60 * 60 * 1000;
+        final long oneday = (long) 24 * 60 * 60 * 1000;
         final long targetTime = ComponentUtil.getSystemHelper().getCurrentTimeAsLong() - days * oneday;
         jobLogBhv.queryDelete(cb -> {
             cb.query().setEndTime_LessThan(targetTime);
diff --git a/src/main/java/org/codelibs/fess/ds/impl/CsvListDataStoreImpl.java b/src/main/java/org/codelibs/fess/ds/impl/CsvListDataStoreImpl.java
index 7bd1a25c4..bddab3753 100644
--- a/src/main/java/org/codelibs/fess/ds/impl/CsvListDataStoreImpl.java
+++ b/src/main/java/org/codelibs/fess/ds/impl/CsvListDataStoreImpl.java
@@ -35,7 +35,7 @@ public class CsvListDataStoreImpl extends CsvDataStoreImpl {
 
     public boolean deleteProcessedFile = true;
 
-    public long csvFileTimestampMargin = 60 * 1000;// 1min
+    public long csvFileTimestampMargin = (long) 60 * 1000;// 1min
 
     public boolean ignoreDataStoreException = true;
 
diff --git a/src/main/java/org/codelibs/fess/helper/SearchLogHelper.java b/src/main/java/org/codelibs/fess/helper/SearchLogHelper.java
index 14d1b6b00..991fa05a5 100644
--- a/src/main/java/org/codelibs/fess/helper/SearchLogHelper.java
+++ b/src/main/java/org/codelibs/fess/helper/SearchLogHelper.java
@@ -62,7 +62,7 @@ public class SearchLogHelper {
     @Resource
     protected DynamicProperties systemProperties;
 
-    public long userCheckInterval = 5 * 60 * 1000;// 5 min
+    public long userCheckInterval = (long) 5 * 60 * 1000;// 5 min
 
     public int userInfoCacheSize = 1000;
 
diff --git a/src/main/java/org/codelibs/fess/mylasta/direction/sponsor/FessMultipartRequestHandler.java b/src/main/java/org/codelibs/fess/mylasta/direction/sponsor/FessMultipartRequestHandler.java
index d2d26d185..7a2d36a33 100644
--- a/src/main/java/org/codelibs/fess/mylasta/direction/sponsor/FessMultipartRequestHandler.java
+++ b/src/main/java/org/codelibs/fess/mylasta/direction/sponsor/FessMultipartRequestHandler.java
@@ -53,7 +53,7 @@ public class FessMultipartRequestHandler implements MultipartRequestHandler {
     //                                                                          Definition
     //                                                                          ==========
     private static final Logger logger = LoggerFactory.getLogger(FessMultipartRequestHandler.class);
-    public static final long DEFAULT_SIZE_MAX = 250 * 1024 * 1024; // 250MB
+    public static final long DEFAULT_SIZE_MAX = (long) 250 * 1024 * 1024; // 250MB
     public static final int DEFAULT_SIZE_THRESHOLD = 256 * 1024; // 250KB
     protected static final String CONTEXT_TEMPDIR_KEY = "javax.servlet.context.tempdir";
     protected static final String JAVA_IO_TMPDIR_KEY = "java.io.tmpdir";
diff --git a/src/main/java/org/codelibs/fess/screenshot/ScreenShotManager.java b/src/main/java/org/codelibs/fess/screenshot/ScreenShotManager.java
index c01b765a4..4a9370e77 100644
--- a/src/main/java/org/codelibs/fess/screenshot/ScreenShotManager.java
+++ b/src/main/java/org/codelibs/fess/screenshot/ScreenShotManager.java
@@ -50,7 +50,7 @@ public class ScreenShotManager {
 
     protected File baseDir;
 
-    public long shutdownTimeout = 5 * 60 * 1000; // 5min
+    public long shutdownTimeout = (long) 5 * 60 * 1000; // 5min
 
     public int screenShotPathCacheSize = 10;
 
diff --git a/src/main/java/org/codelibs/fess/screenshot/impl/CommandGenerator.java b/src/main/java/org/codelibs/fess/screenshot/impl/CommandGenerator.java
index e9797768f..3b20b2950 100644
--- a/src/main/java/org/codelibs/fess/screenshot/impl/CommandGenerator.java
+++ b/src/main/java/org/codelibs/fess/screenshot/impl/CommandGenerator.java
@@ -36,7 +36,7 @@ public class CommandGenerator extends BaseScreenShotGenerator {
 
     public List<String> commandList;
 
-    public long commandTimeout = 10 * 1000;// 10sec
+    public long commandTimeout = (long) 10 * 1000;// 10sec
 
     public File baseDir;
 
diff --git a/src/main/java/org/codelibs/fess/util/QueryResponseList.java b/src/main/java/org/codelibs/fess/util/QueryResponseList.java
index 47c44aa0e..4d4ef4775 100644
--- a/src/main/java/org/codelibs/fess/util/QueryResponseList.java
+++ b/src/main/java/org/codelibs/fess/util/QueryResponseList.java
@@ -158,7 +158,7 @@ public class QueryResponseList implements List<Map<String, Object>> {
         existNextPage = start < (long) (allPageCount - 1) * (long) pageSize;
         currentPageNumber = start / pageSize + 1;
         currentStartRecordNumber = allRecordCount != 0 ? (currentPageNumber - 1) * pageSize + 1 : 0;
-        currentEndRecordNumber = currentPageNumber * pageSize;
+        currentEndRecordNumber = (long) currentPageNumber * pageSize;
         currentEndRecordNumber = allRecordCount < currentEndRecordNumber ? allRecordCount : currentEndRecordNumber;
 
         final int pageRangeSize = 5;