checkInput.java

package chess;


public class CheckInput {

	public static boolean checkCoordinateValidity(String in){
		if ((in.startsWith("1") || in.startsWith("2") || in.startsWith("3") || in.startsWith("4")
			|| in.startsWith("5") || in.startsWith("6") || in.startsWith("7") || in.startsWith("8")) &&
			(in.endsWith("a") || in.endsWith("b") || in.endsWith("c") || in.endsWith("d")
			|| in.endsWith("e") || in.endsWith("f") || in.endsWith("g") || in.endsWith("h"))
			&& (in.length() == 2)) {
			return true;
		}
		else {
			return false;
		}
	}
}