Largest Three Rectangles

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

public class LargestThreeRectangles {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        String[] inputLine = input.nextLine().split("[\\[\\D\\W\\]\\s]+");
        String[] inputLineCleaned = clean(inputLine);
        ArrayList<String[]> rectSides = new ArrayList<>();
        for (int i = 0; i < inputLineCleaned.length; i+=2){
            String[] temp = {inputLineCleaned[i],inputLineCleaned[i+1]};
            rectSides.add(temp);
        }
        Map<String,Long> combinations = new LinkedHashMap<>();
        for (int i = 0; i < rectSides.size()-2; i++){
            String[] tempOne = rectSides.get(i);
            String[] tempTwo = rectSides.get(i+1);
            String[] tempThree = rectSides.get(i+2);
            long areaOne = Long.parseLong(tempOne[0])*Long.parseLong(tempOne[1]);
            long areaTwo = Long.parseLong(tempTwo[0])*Long.parseLong(tempTwo[1]);
            long areaThree = Long.parseLong(tempThree[0])*Long.parseLong(tempThree[1]);
            long areaSum = areaOne+areaTwo+areaThree;
            String key = tempOne[0]+"*"+tempOne[1]+" + "
                    +tempTwo[0]+"*"+tempTwo[1]+" + "
                    +tempThree[0]+"*"+tempThree[1]+" = ";
            combinations.put(key, areaSum);
        }
        String test = Collections.max(combinations.entrySet(),
                (entry1, entry2) -> entry1.getValue() > entry2.getValue() ? 1 : -1).getKey();
        System.out.println(combinations.get(test));
    }

    public static String[] clean(final String[] v) {
        List<String> list = new ArrayList<String>(Arrays.asList(v));
        list.removeAll(Collections.singleton(""));
        return list.toArray(new String[list.size()]);
    }
}