java hashmap get nonexistent key
// it returns null
HashMap<Integer,Integer> m = new HashMap<>();
m.put(5, 3);
m.get(5); // returns 3
m.get(4); // returns nulljava hashmap get nonexistent key
// it returns null
HashMap<Integer,Integer> m = new HashMap<>();
m.put(5, 3);
m.get(5); // returns 3
m.get(4); // returns nullCopyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
