这是java字典，将美国各州和加拿大省的缩写Map为全名，改编自问题中提到的c版本。为了简洁起见，它使用静态初始化。

// the US State and Canada abbreviation dictionary, abbreviation --> full name
private final static Map<String, String>  stateAbbreviationDictionary = new HashMap<>();

static {
  // USA
  stateAbbreviationDictionary.put("AL", "Alabama");
  stateAbbreviationDictionary.put("AK", "Alaska");
  stateAbbreviationDictionary.put("AZ", "Arizona");
  stateAbbreviationDictionary.put("AR", "Arkansas");
  stateAbbreviationDictionary.put("CA", "California");
  stateAbbreviationDictionary.put("CO", "Colorado");
  stateAbbreviationDictionary.put("CT", "Connecticut");
  stateAbbreviationDictionary.put("DE", "Delaware");
  stateAbbreviationDictionary.put("DC", "District Of Columbia");
  stateAbbreviationDictionary.put("FL", "Florida");
  stateAbbreviationDictionary.put("GA", "Georgia");
  stateAbbreviationDictionary.put("HI", "Hawaii");
  stateAbbreviationDictionary.put("ID", "Idaho");
  stateAbbreviationDictionary.put("IL", "Illinois");
  stateAbbreviationDictionary.put("IN", "Indiana");
  stateAbbreviationDictionary.put("IA", "Iowa");
  stateAbbreviationDictionary.put("KS", "Kansas");
  stateAbbreviationDictionary.put("KY", "Kentucky");
  stateAbbreviationDictionary.put("LA", "Louisiana");
  stateAbbreviationDictionary.put("ME", "Maine");
  stateAbbreviationDictionary.put("MD", "Maryland");
  stateAbbreviationDictionary.put("MA", "Massachusetts");
  stateAbbreviationDictionary.put("MI", "Michigan");
  stateAbbreviationDictionary.put("MN", "Minnesota");
  stateAbbreviationDictionary.put("MS", "Mississippi");
  stateAbbreviationDictionary.put("MO", "Missouri");
  stateAbbreviationDictionary.put("MT", "Montana");
  stateAbbreviationDictionary.put("NE", "Nebraska");
  stateAbbreviationDictionary.put("NV", "Nevada");
  stateAbbreviationDictionary.put("NH", "New Hampshire");
  stateAbbreviationDictionary.put("NJ", "New Jersey");
  stateAbbreviationDictionary.put("NM", "New Mexico");
  stateAbbreviationDictionary.put("NY", "New York");
  stateAbbreviationDictionary.put("NC", "North Carolina");
  stateAbbreviationDictionary.put("ND", "North Dakota");
  stateAbbreviationDictionary.put("OH", "Ohio");
  stateAbbreviationDictionary.put("OK", "Oklahoma");
  stateAbbreviationDictionary.put("OR", "Oregon");
  stateAbbreviationDictionary.put("PA", "Pennsylvania");
  stateAbbreviationDictionary.put("RI", "Rhode Island");
  stateAbbreviationDictionary.put("SC", "South Carolina");
  stateAbbreviationDictionary.put("SD", "South Dakota");
  stateAbbreviationDictionary.put("TN", "Tennessee");
  stateAbbreviationDictionary.put("TX", "Texas");
  stateAbbreviationDictionary.put("UT", "Utah");
  stateAbbreviationDictionary.put("VT", "Vermont");
  stateAbbreviationDictionary.put("VA", "Virginia");
  stateAbbreviationDictionary.put("WA", "Washington");
  stateAbbreviationDictionary.put("WV", "West Virginia");
  stateAbbreviationDictionary.put("WI", "Wisconsin");
  stateAbbreviationDictionary.put("WY", "Wyoming");
  // Canada
  stateAbbreviationDictionary.put("AB", "Alberta");
  stateAbbreviationDictionary.put("BC", "British Columbia");
  stateAbbreviationDictionary.put("MB", "Manitoba");
  stateAbbreviationDictionary.put("NB", "New Brunswick");
  stateAbbreviationDictionary.put("NL", "Newfoundland and Labrador");
  stateAbbreviationDictionary.put("NS", "Nova Scotia");
  stateAbbreviationDictionary.put("NT", "Northwest Territories");
  stateAbbreviationDictionary.put("NU", "Nunavut");
  stateAbbreviationDictionary.put("ON", "Ontario");
  stateAbbreviationDictionary.put("PE", "Prince Edward Island");
  stateAbbreviationDictionary.put("QC", "Quebec");
  stateAbbreviationDictionary.put("SK", "Saskatchewan");
  stateAbbreviationDictionary.put("YT", "Yukon");
}

java 9引入了不可变Map，下面是实现为不可变Map的同一个字典：

// the US State and Canada abbreviation dictionary, abbreviation --> full name
  private final static Map<String, String> stateAbbreviationDictionary = Map.ofEntries(
          // USA
          entry("AL", "Alabama"),
          entry("AK", "Alaska"),
          entry("AZ", "Arizona"),
          entry("AR", "Arkansas"),
          entry("CA", "California"),
          entry("CO", "Colorado"),
          entry("CT", "Connecticut"),
          entry("DE", "Delaware"),
          entry("DC", "District Of Columbia"),
          entry("FL", "Florida"),
          entry("GA", "Georgia"),
          entry("HI", "Hawaii"),
          entry("ID", "Idaho"),
          entry("IL", "Illinois"),
          entry("IN", "Indiana"),
          entry("IA", "Iowa"),
          entry("KS", "Kansas"),
          entry("KY", "Kentucky"),
          entry("LA", "Louisiana"),
          entry("ME", "Maine"),
          entry("MD", "Maryland"),
          entry("MA", "Massachusetts"),
          entry("MI", "Michigan"),
          entry("MN", "Minnesota"),
          entry("MS", "Mississippi"),
          entry("MO", "Missouri"),
          entry("MT", "Montana"),
          entry("NE", "Nebraska"),
          entry("NV", "Nevada"),
          entry("NH", "New Hampshire"),
          entry("NJ", "New Jersey"),
          entry("NM", "New Mexico"),
          entry("NY", "New York"),
          entry("NC", "North Carolina"),
          entry("ND", "North Dakota"),
          entry("OH", "Ohio"),
          entry("OK", "Oklahoma"),
          entry("OR", "Oregon"),
          entry("PA", "Pennsylvania"),
          entry("RI", "Rhode Island"),
          entry("SC", "South Carolina"),
          entry("SD", "South Dakota"),
          entry("TN", "Tennessee"),
          entry("TX", "Texas"),
          entry("UT", "Utah"),
          entry("VT", "Vermont"),
          entry("VA", "Virginia"),
          entry("WA", "Washington"),
          entry("WV", "West Virginia"),
          entry("WI", "Wisconsin"),
          entry("WY", "Wyoming"),
          // Canada
          entry("AB", "Alberta"),
          entry("BC", "British Columbia"),
          entry("MB", "Manitoba"),
          entry("NB", "New Brunswick"),
          entry("NL", "Newfoundland and Labrador"),
          entry("NS", "Nova Scotia"),
          entry("NT", "Northwest Territories"),
          entry("NU", "Nunavut"),
          entry("ON", "Ontario"),
          entry("PE", "Prince Edward Island"),
          entry("QC", "Quebec"),
          entry("SK", "Saskatchewan"),
          entry("YT", "Yukon"));