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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.Arrays;
  4. import java.util.HashMap;
  5. import java.util.List;
  6. import java.util.Map;
  7. import java.util.function.Function;
  8. import java.util.stream.Collectors;
  9. import java.util.stream.IntStream;
  10. import java.util.stream.Stream;
  11.  
  12. /* Name of the class has to be "Main" only if the class is public. */
  13. class Ideone
  14. {
  15. 	public static void main (String[] args) throws java.lang.Exception
  16. 	{
  17. 	List<Map<String, String>> customerDirectory = List.of(
  18.                 Map.of("NAME", "a", "PHONE", "123", "ADDRESS", "dd"),
  19.                 Map.of("NAME", "c", "PHONE", "34534", "ADDRESS", "ddd"),
  20.                 Map.of("NAME", "b", "PHONE", "3454", "ADDRESS", "tt"));
  21.         Map<String, String> customerInfo = new HashMap<>();
  22.         customerInfo.put("NAME", "a");
  23.         customerInfo.put("PHONE", "123");
  24.         customerInfo.put("ADDRESS", null);
  25.  
  26.         List<String> compareKeys = Arrays.asList("NAME", "PHONE", "ADDRESS");
  27.  
  28.         boolean anyMatch =
  29.                 customerDirectory.stream()
  30.                         .anyMatch(m -> compareKeys.stream()
  31.                                 .allMatch(key -> m.get(key).equals(customerInfo.get(key))));
  32.  
  33.         System.out.println(anyMatch);
  34. 	}
  35. }
Success #stdin #stdout 0.07s 34024KB
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Standard input is empty
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https://ideone.com/hO1Jlc
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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