package ProGAL.dataStructures; public class SortToolInteger implements SortTool { public int compare(Object x1, Object x2) { if ((x1 instanceof Integer) && (x2 instanceof Integer)) { int n1 = ((Integer)x1).intValue(); int n2 = ((Integer)x2).intValue(); if (n1 < n2) return COMP_LESS; else { if (n1 > n2) return COMP_GRTR; else return COMP_EQUAL; } } else throw SortTool.err1; } }