text: Q:
  
  regex on key hazelcast
  
  I am storing data using map data structure in Hazelcast. This will get stored like below:
  key1 valueforKey1
  key2 valueforkey2
  key11 valueforKey11
  key22 valueforKey22
  key123 valueforKey123
  key33 valueforKey33
  
  Now I want to fetch data on the basis of key from hazelcast, e.g I want all records whose key starts with key1*.
  How can I do this in hazelcast?
  Note: At value I am storing some string.
  
  A:
  
  Just by using the Hazelcast Criteria API http://docs.hazelcast.org/docs/3.4/manual/html-single/hazelcast-documentation.html#criteria-api 
  Either with like or regex directives.
  edit:
  Here's a complete example:
  public class Test {
    public static void main(String[] args) {
      HazelcastInstance hazelcastInstance = Hazelcast.newHazelcastInstance();
      IMap<String, String> map = hazelcastInstance.getMap("map-name");
  
      map.put("key1", "value-1");
      map.put("key21", "value-21");
      map.put("key11", "value-key11");
  
      SqlPredicate predicate = new SqlPredicate("__key REGEX '^key1.*$'");
      System.out.println(map.values(predicate));
    }
  }
  
  