JAVA

java iterate through hashmap

for (Map.Entry<String, String> entry : yourHashMap.entrySet()) {
	System.out.println(entry.getKey() + " = " + entry.getValue());
}

loop through keys only in hashmap java

Map<String, Object> map = ...;

for (String key : map.keySet()) {
    // ...
}

looping through a hash map and getting the key

 HashMap<Integer, Integer> table = new HashMap<>();
for(Map.Entry<Integer, Integer> key: table.entrySet()){
           System.out.println(key.getKey() + " " + key.getValue());
        }

How to iterate hashmap entries in java

// Creating a HashMap
Map<String, String> langTable = new HashMap<String, String>();
 
// Inserting elements to HashMap
langTable.put("A", "Angular");
langTable.put("J", "Java");
langTable.put("P", "Python");
langTable.put("H", "Hibernate");
 
// Iterating HashMap using foreach
for (Map.Entry<String, String> set : langTable.entrySet()) {
	// Printing all elements of a Map
	System.out.println(set.getKey() + " = " + set.getValue());
}

iterate hashmap entries

Map<Character, String> charType
            = new HashMap<Character, String>();
 
        // Inserting data in the hash map.
        charType.put('J', "Java");
        charType.put('H', "Hibernate");
        charType.put('P', "Python");
        charType.put('A', "Angular");
 
        // Iterating HashMap through forEach and
        // Printing all. elements in a Map
        charType.forEach(
            (key, value)
                -> System.out.println(key + " = " + value));
		
		// or 
		// using for loop to iterate the map entry sets
		for (Map.Entry<String,String> mapElement : charType.entrySet()) {
            String key = mapElement.getKey();
 
            // Adding some bonus marks to all the students
            String value = mapElement.getValue();
 
            // Printing above marks corresponding to
            // students names
            System.out.println(key + " : " + value);
        }