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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	private static final String SOME_CONSTANT = "A";
  11.  
  12. 	private static boolean java7(List<String> variables,List<String> attrNames){
  13. 		for (String variable : variables) {
  14. 			boolean validAttribute = false;
  15. 			if (variable.equals(SOME_CONSTANT)) {
  16. 				validAttribute = true;
  17. 			} else {
  18. 				for (String attrName : attrNames) {
  19.  
  20. 					if (variable.equals(attrName)) {
  21. 						validAttribute = true;
  22. 						break;
  23. 					}
  24. 				}
  25. 			}
  26. 			if (!validAttribute) {
  27. 				return false;
  28. 			}
  29. 		}
  30. 		return true;
  31. 	}
  32.  
  33. 	private static boolean java8(List<String> variables,List<String> attrNames){
  34. 	return variables.stream().allMatch((item) -> item.equals(SOME_CONSTANT) || attrNames.contains(item));
  35. 	}
  36.  
  37. 	public static void main (String[] args) throws java.lang.Exception
  38. 	{
  39. 		List<String> attrNames = Arrays.asList("a", "b", "c");
  40. 		List<String> noMatch = Arrays.asList("x", "b", "c");
  41. 		List<String> match = Arrays.asList("a", "b", "c");
  42. 		List<String> constant = Arrays.asList("a", "b", "c");
  43.  
  44. 		System.out.println(java7(noMatch,attrNames)+" "+java8(noMatch,attrNames));
  45. 		System.out.println(java7(match,attrNames)+" "+java8(match,attrNames));
  46. 		System.out.println(java7(constant,attrNames)+" "+java8(constant,attrNames));
  47.  
  48. 	}
  49. }
Success #stdin #stdout 0.17s 320576KB
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false false
true true
true true
https://ideone.com/dB57C8
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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