Hashmap java

New hashmap java

Map<String, String> myMap = new HashMap<String, String>() {{
        put("a", "b");
        put("c", "d");
    }};

Source: stackoverflow.com

Hashmap

- HasHMap can have null key, order is not guaranteed

HashMap java

package org.o7planning.tutorial.javacollection.helloworld;

import java.util.HashMap;

public class HelloHashMap {

	public static void main(String[] args) {

		// Créer un objet HashMap qui stocke les paires des ID d'employés et des salaires.
		// Clé de chaîne: ID d'employé
		// Valeur flottante: Salaire.
		HashMap<String, Float> salaryMap = new HashMap<String, Float>();
	 

		salaryMap.put("E01", 1000f);
		salaryMap.put("E02", 12000f);
		salaryMap.put("E03", 12300f);
		salaryMap.put("E04", 1000f);
		salaryMap.put("E05", 300.5f);
		
		// Obtenir les salaires des employés 'E02'
		Float salary= salaryMap.get("E01");
		System.out.println("Salary of employee E01 = "+ salary);
		
		// Mettre à jour le salaire pour les employés 'E05'
		salaryMap.put("E05", 400f);
		
		System.out.println("Salary of employee E05 = "+ salaryMap.get("E05"));
		 
	}

}

Source: devstory.net

Hashmap java

    private static final Map<Integer, String> map = Map.of(
        1, "one",
        2, "two"
    );

Source: techiedelight.com

Similar codes

0 vote176 views1 answer
How to create folder java
Java
1 vote137 views1 answer
Containskey java complexity
Java
0 vote169 views1 answer
Governmental transparency
Java
0 vote129 views1 answer
How to sort 2d array in java using stream api
Java
0 vote142 views1 answer
Call c function from java
Java
0 vote145 views1 answer
Antialiasing kjava
Java
2 votes124 views1 answer
Primefaces calendar min date validation
Java
0 vote178 views1 answer
Spring boot access images in resources folder
Java Spring
3 votes167 views2 answers
Generating a random number
Java
2 votes154 views2 answers
System vs integration testing
Java