/Java/Why String is popular HashMap key in Java?

Why String is popular HashMap key in Java?

Since String is immutable, its hashcode is cached at the time of creation and it doesn't need to be calculated again. This makes it a great candidate for key in a Map and its processing is fast than other HashMap key objects. This is why String is mostly used Object as HashMap keys.

Similar codes

1 vote328 views2 answers
Games
Java
1 vote321 views1 answer
How to read file from assets folder in android
Java
0 vote321 views1 answer
How to connect from Android emulator to application on localhost?
Java
-5 votes334 views1 answer
Android studio get time
Java
6 votes300 views2 answers
How to set the java_home in mac
Java
1 vote399 views6 answers
What is inheritance in java
Java
49 votes323 views6 answers
Char array to string java
Java
7 votes330 views3 answers
Java find largest number in list
Java
1 vote332 views1 answer
Why is it not recommended to use script elements in jsp?
Java
0 vote332 views1 answer
What is collection fromework
Java