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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.HashMap;
  4. import java.util.Iterator;
  5. import java.util.Map;
  6.  
  7.  
  8.  class StateCityClassTest {
  9.  
  10.     public static void main(String[] args) {
  11.         StateCityMap map = new StateCityMap();
  12.  
  13.         map.putStateCity(1253, "São Paulo", "Osasco");
  14.         map.putStateCity(1254, "São Paulo", "Santos");
  15.         map.putStateCity(1255, "Rio de Janeiro", "Cabo Frio");
  16.  
  17.         System.out.println(map.getStateCity(1253));
  18.  
  19.         System.out.println(map.showAllItens());
  20.  
  21.     }
  22.  
  23. }
  24.  
  25. class StateCityMap {
  26.  
  27.     private final Map<Integer, HashMap<String, String>> codeStateList;
  28.  
  29.     public StateCityMap() {
  30.         codeStateList = new HashMap<>();
  31.     }
  32.  
  33.     public void putStateCity(int code, String state, String city) {
  34.         HashMap<String, String> stateCity = new HashMap<>();
  35.         stateCity.put(state, city);
  36.         codeStateList.put(code, stateCity);
  37.     }
  38.  
  39.     public String getStateCity(int key) {
  40.         return this.containsKey(key) ? codeStateList.get(key).toString() : null;
  41.     }
  42.  
  43.     public void removeStateCity(int key) {
  44.         for (Iterator<Map.Entry<Integer, HashMap<String, String>>> iterator = codeStateList.entrySet().iterator(); iterator.hasNext();) {
  45.             Map.Entry<Integer, HashMap<String, String>> entry = iterator.next();
  46.             if (entry.getKey().equals(key)) {
  47.                 iterator.remove();
  48.             }
  49.         }
  50.     }
  51.  
  52.     public boolean containsKey(int key) {
  53.         return codeStateList.containsKey(key);
  54.     }
  55.  
  56.  
  57.     public String showAllItens() {
  58.         String allItens = "";
  59.         for (Map.Entry<Integer, HashMap<String, String>> entry : codeStateList.entrySet()) {
  60.             allItens += entry.getKey() + " : " + entry.getValue() + "\n";
  61.         }
  62.         return allItens;
  63.     }
  64. }
  65.  
Success #stdin #stdout 0.06s 320576KB
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Standard input is empty
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{São Paulo=Osasco}
1253 : {São Paulo=Osasco}
1254 : {São Paulo=Santos}
1255 : {Rio de Janeiro=Cabo Frio}
https://ideone.com/mr4w3G
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
secret

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