ADD file via upload

TimeUtils.java

@@ -0,0 +1,40 @@
+package com.example.activity;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+
+
+public class TimeUtils {
+    public static final SimpleDateFormat DEFAULT_DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+
+    private TimeUtils() {
+        throw new AssertionError();
+    }
+
+
+    public static String getTime(long timeInMillis, SimpleDateFormat dateFormat) {
+        return dateFormat.format(new Date(timeInMillis));
+    }
+
+    public static String getNowTime() {
+        return getTime(getCurrentTimeInLong(), DEFAULT_DATE_FORMAT);
+    }
+
+    public static String getTime(long timeInMillis) {
+        return getTime(timeInMillis, DEFAULT_DATE_FORMAT);
+    }
+
+
+    public static long getCurrentTimeInLong() {
+        return System.currentTimeMillis();
+    }
+
+
+    public static String getCurrentTimeInString(SimpleDateFormat dateFormat) {
+        return getTime(getCurrentTimeInLong(), dateFormat);
+    }
+
+
+}
+