PRE-INCREMENT (++X) VS POST-INCREMENT (X++)
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In class we discussed the difference between x++ and ++x;

Note that they are identical if they are the only thing in a line.

Also note that they do not follow BEDMAS.  ++x happens BEFORE anything else on the line and x++ happens AFTER anything else on the line.

Type the following code into a Java file, compile, and run it.
Explain the results. 
Notice that same thing will happen with x-- and --x .

public class PrePostTest {
	public static void main (String args[]) {
	   int x=5, y=5;
	   System.out.printf("x,y:\t\tx=%d, y=%d\n",x,y);
	   y=x++;
	   System.out.printf("y=x++\t\tx=%d, y=%d\n\n",x,y);
	   x=y=5;
	   System.out.printf("x,y:\t\tx=%d, y=%d\n",x,y);
	   y=++x;
	   System.out.printf("y=++x\t\tx=%d, y=%d\n\n",x,y);
	   System.out.printf("x,y:\t\tx=%d, y=%d\n",x,y);
	   ++x;
	   y++;
	   System.out.printf("++x, y++\tx=%d, y=%d\n",x,y);
	}
}