Write a regex expression that checks a text edit field in java to see if it matches the following pattern 1 or xx22 or x2x1 etc..
let the x's represent any character in the alphabet, and the numbers represent any numbers. it has to have four or more characters.

Kyle, a receptionist for a building supply company, recently won an award for saving his company money on their phone system. after being presented with kyle's research, the company changed the way in which it made long-distance phone calls and cut their expenses in this area by 75 percent. the new system the kyle's company most likely adopted was wired communications switching stations voip hdtv

Negative methods of behavior correction include all but this: sarcasm verbal abuse setting an example for proper behavior humiliation

What are the three uses of a screw?