Technology Questions

- By using method overriding a sub class can change the definition of super class method.

- By using overriding a sub class can modify the functionality of the super class.

By using super call we can call super class constructors  from sub class constructors and we can initialize super class private data.

The differences between HTML and HTML5 are:

- Document of HTML is very large as compare to the HTML5.

- Audio and Video tags are not present in HTML whereas HTML5 contains audio and video tags.

- Vector technology is not integral part of HTML whereas HTML5 Vector technology is the integral part of it.

- HTML supported by all old browsers whereas HTML5 is supported by new browser.

- In HTML web sockets are not available whereas in HTML5 Full duplex communication channel is present.

In a database table, the category of information is called Field.

Yes, we can. In order to compile a java program, we don't require any main method. But to execute a java program we must have a main in it (unless it is an applet or servlet). Because main is the starting point of a java program.

Adb is short for Android Debug Bridge. It allows developers the power to execute remote shell commands. Its basic function is to allow and control communication towards and from the emulator port.

boolean isFile();

<?php
$tomorrow = mktime(0, 0, 0, date("m") , date("d")+1, date("Y"));
$lastmonth = mktime(0, 0, 0, date("m")-1, date("d"), date("Y"));
echo ($tomorrow-$lastmonth)/86400;
?>