1. Write a public static method named q1 that takes no parameters and has return

Question

1. Write a public static method named q1 that takes no parameters and has return type HashMap of String to String. In this method, you may assume there is a file named "monthly.csv" with lines in the format "spread(String),commonly(String),more(String),early(String),hence(String),sanction(String),surely(String),expense(Integer)" where each Integer column contains only well-formed integers. There is no header line in this file. This method will return a new HashMap that maps "more" to "sanction" by putting one key-value pair into the HashMap for each line in "monthly.csv".

Explanation / Answer

public static HashMap q1() { try { Scanner fin = new Scanner(new File("monthly.csv")); String line, more, sanction; HashMap map = new HashMap(); while (fin.hasNextLine()) { line = fin.nextLine(); more = line.split(",")[2]; sanction = line.split(",")[5]; if(!map.containsKey(more)) { map.put(more, sanction); } } fin.close(); return map; } catch (FileNotFoundException e) { e.printStackTrace(); return null; } }

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