code: /*
  com.puppycrawl.tools.checkstyle.checks.naming.MemberNameCheck
  format = (default)^[a-z][a-zA-Z0-9]*$
  applyToPublic = (default)true
  applyToProtected = (default)true
  applyToPackage = (default)true
  applyToPrivate = (default)true
  
  
  */
  
  package com.puppycrawl.tools.checkstyle.grammar;
  
  import java.util.*;
  
  public class InputJava7Diamond { // ok
      HashMap<String, Integer> map = new HashMap<String, Integer>();
      HashMap<String, Integer> map2 = new HashMap<>();
      HashMap<String, HashMap<Integer, Integer>> map3 = new HashMap<>();
      ArrayList<String> list = new ArrayList<>();
  }
  