singleton java 8 date formatters

1 files changed, 43 insertions, 0 deletions

diff --git a/juick-core/src/main/java/com/juick/util/DateFormattersHolder.java b/juick-core/src/main/java/com/juick/util/DateFormattersHolder.java
new file mode 100644
index 00000000..79414808
--- /dev/null
+++ b/juick-core/src/main/java/com/juick/util/DateFormattersHolder.java
@@ -0,0 +1,43 @@
+package com.juick.util;
+
+/**
+ * Created by aalexeev on 12/7/16.
+ */
+public class DateFormattersHolder {
+
+    private DateFormattersHolder() {
+        throw new IllegalStateException();
+    }
+
+    private static volatile DateFormatter messageFormatter;
+
+    public static DateFormatter getMessageFormatterInstance() {
+        DateFormatter localInstance = messageFormatter;
+
+        if (localInstance == null) {
+            synchronized (DateFormatter.class) {
+                localInstance = messageFormatter;
+
+                if (localInstance == null)
+                    messageFormatter = localInstance = new DateFormatter("yyyy-MM-dd HH:mm:ss");
+            }
+        }
+        return localInstance;
+    }
+
+    private static volatile DateFormatter rssFormatter;
+
+    public static DateFormatter getRssFormatterInstance() {
+        DateFormatter localInstance = rssFormatter;
+
+        if (localInstance == null) {
+            synchronized (DateFormatter.class) {
+                localInstance = rssFormatter;
+
+                if (localInstance == null)
+                    rssFormatter = localInstance = new DateFormatter("EEE, d MMM yyyy HH:mm:ss");
+            }
+        }
+        return localInstance;
+    }
+}