How to use RowShifter?

/**
 * Make example.
 *
 * @return the vector
 */
private static Vector<DecisionRule> makeExample() {
    // Originally first c1 then c2, start building a decision table
    Vector<DecisionRule> rules = new Vector<DecisionRule>();
    // column 1
    DecisionRule rule = new DecisionRule();
    rule.addCondition(new ConditionPair("C1", "Y"));
    rule.addCondition(new ConditionPair("C2", "N"));
    rule.addAction(new ActionPair("A1", "*"));
    rule.addAction(new ActionPair("A2", "/"));
    rules.add(rule);

    // column 2
    rule = new DecisionRule();
    rule.addCondition(new ConditionPair("C1", "Y"));
    rule.addCondition(new ConditionPair("C2", "Y"));
    rule.addAction(new ActionPair("A1", "/"));
    rule.addAction(new ActionPair("A2", "/"));
    rules.add(rule);

    // column 3
    rule = new DecisionRule();
    rule.addCondition(new ConditionPair("C1", "N"));
    rule.addCondition(new ConditionPair("C2", "N"));
    rule.addAction(new ActionPair("A1", "*"));
    rule.addAction(new ActionPair("A2", "/"));
    rules.add(rule);

    // column 4
    rule = new DecisionRule();
    rule.addCondition(new ConditionPair("C1", "N"));
    rule.addCondition(new ConditionPair("C2", "Y"));
    rule.addAction(new ActionPair("A1", "*"));
    rule.addAction(new ActionPair("A2", "/"));
    rules.add(rule);
    // finish building the decision table

    DecisionTable dt = new DecisionTable();
    String[][] content = dt.getTableContent(rules);
    System.out.println("-----------Table Example-------------");
    System.out.println(dt.getInfo(content));

    return rules;
}

/**
 * Make conditions.
 *
 * @return the vector
 */
public static Vector<DTCondition> makeConditions() {
    Vector<DTCondition> conditions = new Vector<DTCondition>();
    DTCondition c = new DTCondition("C2", new String[] { "Y", "N" });
    conditions.add(c);
    c = new DTCondition("C1", new String[] { "Y", "N" });
    conditions.add(c);
    return conditions;
}

/**
 * The main method.
 *
 * @param args the arguments
 */
public static void main(String[] args) {
    Vector<DecisionRule> rules = makeExample();
    DecisionTable table = new DecisionTable();
    String[][] content = table.getTableContent(rules);

    RowShifter shifter = new RowShifter(content);
    String[][] result = shifter.Shift(makeConditions());
    System.out.println(shifter.getContentPrint(result));
}