Android (Java) Learning Note 104:map Collection's traversal key find value

1  Packagecn.itcast_01;2 3 ImportJava.util.HashMap;4 ImportJava.util.Map;5 ImportJava.util.Set;6 7 /*8 * Traversal of the map collection. 9 * Map--CouplesTen * Ideas: One * A: Bring all the husbands together.  A * B: Walk through the collection of husbands, get every husband.  - * C: Ask the husband to find his wife.  -  *  the * Conversion: - * A: Get all the keys - * B: A collection of traversal keys to get each key - * C: According to the key to find the value +  */ -  Public classMapDemo3 { +      Public Static voidMain (string[] args) { A         //To create a collection object atmap<string, string> map =NewHashmap<string, string>(); -  -         //Create an element and add it to the collection -Map.put ("Yang", "Little Dragon Girl")); -Map.put ("Guo Jing", "Huang Rong"); -Map.put ("Yang Kang", "Munians"); inMap.put ("Chen Xuanfeng", "MUI Wind"); -  to         //Traverse +         //get all the keys -Set<string> set =Map.keyset (); the         //iterate through the collection of keys to get each key *          for(String key:set) { $             //find values by keyPanax NotoginsengString value =Map.get (key); -SYSTEM.OUT.PRINTLN (key + "---" +value); the         } +     } A}

Android (Java) Learning Note 104:map Collection's traversal key find value