PreparedStatement gives better performance when compared to Statement because it is pre-parsed and pre-compiled. This means that compilation and parsing of such statement is done only once by database. Afterwards database reuses already parsed and compiled statement. This significantly improves performance because whenever a statement has to be executed repeatedly, it doesn't need to be parsed and compiled time and again. So overload incurred by parsing and compiling same statement can be reduced.

When there is a requirement for single request to process multiple complex statements, CallableStatement gives better performance as compared to PreparedStatement and Statement.

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Printers' years ago used to be very expensive and reason for this was because print heads that would stamp image on paper was within printer. Ink and/or toner were added to a reservoir or printer used ribbons to stamp image on paper. Now printers are fairly cheap, cost comes when you have to purchase ink cartridges for it. One would think that it would almost be worth it to buy a new printer instead of cartridges because price of cartridges is often more than some of more basic ink jet printers available.

The current price of cartridges while currently expensive have some technology in them that is complex and actually over long haul will end up being cheaper than it would be to replace print heads often. Print heads are now contained within cartridges themselves. The exciting thing about that is you could have your printer for a very long time if you use correct cartridges for your printer.

Color cartridges work same as black cartridges by squirting ink through tiny nozzles onto paper in horizontal strips as cartridges move back and forth across page. The color cartridge however, has three reservoirs with cyan, magenta, and yellow ink, each in a separate reservoir.

The image quality can depend on a number of things. Paper quality can affect image you get. Brightness and absorption of ink are two main things that affect image quality. Brightness is exactly how bright color or print image is while absorption is how effectively paper absorbs ink. For inkjet printers it is best to use paper made specifically for inkjet printers. You will get best possible image with proper paper. Also check settings of your printer and/or your display properties, these things can also affect your printing project.

Depending on paper you use and your printer, you may want to leave your documents alone for a little while so ink can dry. Some printers have an ink saver setting that will put out less ink, which will dry faster, and still give you a near perfect image. Get to know your printer and how it works.

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