java hashmap change value code example

Example 1: update value in hashmap java

map.replace(key, map.get(key) + 1);
//or
map.put(key, map.get(key) + 1);

Example 2: update hashmap value while iterating

for (Map.Entry<Key, Long> entry : playerCooldowns.entrySet()) {
    entry.setValue(entry.getValue() - 20);
}

Example 3: change the value in a hashtable java

map.replace(key, newValue);

Example 4: java hashmap set value

myMap.put(key, value);