Find Numeric filter

class FindNumFilter {
     /** The value of this filter */
     int num;
     /** Constants for the comparison operators. */
     final int LE = -2, LT = -1, EQ = 0, GT = +1, GE = +2;
     /** The current comparison operator */
     int mode = EQ;
    
     /** Constructor */
         FindNumFilter(String input) {
             switch(input.charAt(0)) {
             case '+': mode = GT; break;
             case '-': mode = LT; break;
             case '=': mode = EQ; break;
             // No syntax for LE or GE yet.
         }
         num = Math.abs(Integer.parseInt(input));
     }
    
     /** Construct a NumFilter when you know its mode and value */
         FindNumFilter(int mode, int value) {
         this.mode = mode;
         num = value;
     }
         boolean accept(int n) {
             switch(mode) {
             case GT: return n > num;
             case EQ: return n == num;
             case LT: return n < num;
             default:
             System.err.println("UNEX CASE " + mode );
             return false;
         }
     }
}