Yes, updating to Java 7, using Auto Update or updating through the Java Control Panel, will remove the highest version of Java 6 installed.Java 6 has reached its End of Public Updates, which means there will be no further public secure updates for Java 6.
It is recommended that Java 6 be removed from your computer to make it more secure.
For daily updates, you can select the time of the day for the update.
Same goes for all plugins and themes installed on your website.
You need to install updates for themes and plugins to get new features and fixes.
Let’s take a look at how you can automatically update plugins in Word Press.