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The Java Embedded Aggregator Classes MaxAggregate and MinAggregate

MaxAggregate implements the maximum aggregation, and MinAggregate implements the minimum aggregation.

For an overview see page Java Aggregator Class

Class Definition

 
    public static class MaxAggregate implements Aggregate<Comparable>
    {
        public void initialize(Comparable val) 
        {
            max = val;
        }
 
        public void accumulate(Comparable val) 
        {
            if (val.compareTo(max) > 0) 
            {
                max = val;
            }
        }
 
        public Object result() 
        {
            return max;
        }
 
        public void merge(Aggregate<Comparable> other) 
        {
            accumulate((Comparable)other.result());
        }
 
        Comparable max;
        
    }

MinAggregate

The MinAggregate implementation is exactly identical to that of MaxAggregate below, except that the variable name is min instead of max (highlighted below) and the compareTo() expression is

 
    if (val.compareTo(min) < 0)

instead of

 
    if (val.compareTo(max) > 0)