/* This class is not correct. It needs to be fixed to work in a
 * sequential setting, and also a multithreaded setting. What must we
 * do to change it? */

public class RangeBuggy {
    private int lower;
    private int upper;
    public RangeBuggy(int lower, int upper) {
	this.lower = lower;
	this.upper = upper;
    }
    public boolean inRange(int v) {
	if (v >= lower && v <= upper) return true;
	return false;
    }
    public void incUpper() {
	upper ++;
    }
    public void incLower() {
	lower ++;
    }
    public void decLower() {
	lower-- ;
    }
    public void decUpper() {
	upper --;
    }
}