CODEWITHSUNDEEP
javaappletawt
user187744
user187744

Reputation: 71

Applets. Why does paint method requires graphics as an argument

Why paint method requires graphics objects as an argument? Passing graphics get as an argument here. 

public void paint(Graphics g)

Upvotes: 1

Views: 515

Answers (1)

Sergey Kalinichenko
Sergey Kalinichenko

Reputation: 726589

paint method requires Graphics as an argument because otherwise it would not know in what graphic context the drawing needs to be made.

An implementation of paint needs to perform its drawing in some context, i.e. make calls like g.drawImage etc. Without a Graphics parameter the paint would have to have some alternative way of getting hold of that g parameter, e.g. though some static method or a variable. This approach would be less explicit than providing the context as a method parameter.

Letting the caller decide what Graphics to pass to your paint method has an added benefit: the content of your applet can be captured for printing without any additional work on your part. The host of your applet simply passes a printer's graphic context to the same print method to get a printable image of your running applet.

Upvotes: 1

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