new hashmap java
Map<String, String> myMap = new HashMap<String, String>() {{ put("a", "b"); put("c", "d"); }};
new hashmap java
Map<String, String> myMap = new HashMap<String, String>() {{ put("a", "b"); put("c", "d"); }};
java hashmap syntax
// Import the HashMap class import java.util.HashMap; // First Example // Create a HashMap object called capitalCities HashMap<String, String> capitalCities = new HashMap<String, String>(); // Add keys and values (Country, City) capitalCities.put("England", "London"); capitalCities.put("Germany", "Berlin"); capitalCities.put("Norway", "Oslo"); capitalCities.put("USA", "Washington DC"); System.out.println(capitalCities); //Second Example // Create a HashMap object called stGrade Map<String, Integer> stGrade = new HashMap<String, Integer>(); // Insert elements stGrade.put("aaron", new Integer(90)); stGrade.put("isaac", new Integer(100)); stGrade.put("john", new Integer(35)); stGrade.put("mohammad", new Integer(100)); // Get value stGrade.get("mohammad"); // returns 100 stGrade.get("aaron"); // returns 90 stGrade.get("john"); // returns 35 stGrade.get("isaac"); // returns 100
java hashmap example
//Hash map creation Map< String,Integer> hm = new HashMap< String,Integer>(); //inserting elements into hashmap hm.put("a", new Integer(100)); hm.put("b", new Integer(200)); hm.put("c", new Integer(300)); hm.put("d", new Integer(400));
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