java - Spring mongo adding criteria to and operator dynamicaly -

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I am trying to create dynamic queries with user input and with operation, my code is created. : list & lt; Criteria & gt; Criterias = new ArrayList & lt; Criteria & gt; ();

And add criteria to this list. And successfully adding it successfully now I want to create and operator between each criterion. 

  Criteria = new criteria (). And operators (criterias.get (0), criterias.get (1));   
 This works fine but my input is not correct so I should add it dynamically, I tried  
  for (int I = 0; i & lt; Criterias.size (); i ++) Criteria Criteria = new criteria (). And operator (criterias.get (i));   
 Where am I missing?   
 
 
 A list of benchmarks by "$ and" operator to unite all the standards:  
  Criteria = new criteria (). And Operator (Criterion Toura (New Criterion [Criterion (. ())));   
 here

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