![Bloom filters and other probabilistic data structures can be useful in big data and other streaming applications. Bloom filters and other probabilistic data structures can be useful in big data and other streaming applications.](https://octo.vmware.com/wp-content/uploads/sites/18/2021/08/Picture2-2.png)
Bloom filters and other probabilistic data structures can be useful in big data and other streaming applications.
![Javarevisited: Java HashMap ContainsKey and ContainsValue Example - How to check if a Key Exists in Map? Javarevisited: Java HashMap ContainsKey and ContainsValue Example - How to check if a Key Exists in Map?](https://1.bp.blogspot.com/-2FLYvZnnS9A/XqbWC3gdoXI/AAAAAAAAeno/aH0dw1TSnDkl97NtL1pQo63NSYwZOwLxwCLcBGAsYHQ/s400/How%2Bto%2Bcheck%2Bif%2Ba%2Bkey%2Bexists%2Bin%2BHashMap%2Bin%2BJava.jpg)
Javarevisited: Java HashMap ContainsKey and ContainsValue Example - How to check if a Key Exists in Map?
![collections - Filter using Java Stream == > a HashMap of custom objects to a HashSet - Stack Overflow collections - Filter using Java Stream == > a HashMap of custom objects to a HashSet - Stack Overflow](https://i.stack.imgur.com/tFE2o.png)
collections - Filter using Java Stream == > a HashMap of custom objects to a HashSet - Stack Overflow
![Algorithm: Determine if the characters in a string are unique using a hashmap | by Supraja Raman | Medium Algorithm: Determine if the characters in a string are unique using a hashmap | by Supraja Raman | Medium](https://miro.medium.com/v2/resize:fit:594/1*8GJZ5GBpxtHQ4wqBRYojAQ.jpeg)