putIfAbsent method
inherited
This operation is not supported by an unmodifiable map.
Implementation
V putIfAbsent(K key, V ifAbsent()) {
throw new UnsupportedError("Cannot modify unmodifiable map");
}
This operation is not supported by an unmodifiable map.
V putIfAbsent(K key, V ifAbsent()) {
throw new UnsupportedError("Cannot modify unmodifiable map");
}