Android in System.currenttimemillis ()

<span id="Label3"></p><p><p><span style="font-size:18px">Function:<br>System.currenttimemillis ();</span></p></p><p><p><span style="font-size:18px">Function: produces a current millisecond, which is actually the number of milliseconds since 0 o'clock January 1, 1970, and date () is actually equivalent to date (system.currenttimemillis ());</span></p></p><p><p><span style="font-size:18px">Because the date class also constructs a date (long date), it is used to calculate the millisecond difference between long seconds and January 1, 1970.</span></p></p><p><p><span style="font-size:18px"><br></span></p></p><p><p><span style="font-size:18px">Gets the number of MILLISECONDS. The use of the function calendar is finally the result of the month, day and SECONDS.</span></p></p><p><p><span style="font-size:18px">System.currenttimemillis ();</span></p></p><p><p><span style="font-size:18px">Obtained is the time distance from 1970-1-01 00:00:00.000 to the current moment, the type is long</span></p></p><span style="font-size:18px"><span style="font-size:18px">string.valueof (system.currenttimemillis ()) This statement can be converted to the following pattern:<br>Long ct = System.currenttimemillis ();<br>String t = string.valueof (ct);<br></span></span><p><p><span style="font-size:18px">In fact, the above string T is equivalent to ct+ "", just to the string format.</span></p></p><p><p><span style="font-size:18px"><br></span></p></p><p><p><span style="font-size:18px"></span></p></p><pre name="code" class="java"><pre name="code" class="java">Public String refformatnowdate () { Date nowtime = new Date (system.currenttimemillis ()); SimpleDateFormat sdformatter = new SimpleDateFormat ("yyyy-mm-dd"); String retstrformatnowdate = Sdformatter.format (nowtime); Return retstrformatnowdate;}</pre></pre><br><br><p><p></p></p><p><p><span style="font-size:18px"><br></span></p></p><p><p><span style="font-size:18px"><br></span></p></p><p><p><span style="font-size:18px"><br></span></p></p> <p><p>Android in System.currenttimemillis ()</p></p></span>