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  1. import java.util.Arrays;
  2. import java.util.Collections;
  3.  
  4. final class Ideone {
  5.  
  6.   public static void main(final String[] argv) {
  7.     System.out.println(Collections.frequency(
  8.     	Arrays.asList(2, 5, 6, 6, 7, 3, 1, 2), 2));
  9.   }
  10. }
Success #stdin #stdout 0.1s 320576KB
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stdin 
Standard input is empty
stdout 
2
https://ideone.com/TwS3yJ
language:
Java (12.0.1)
created:
10 years ago
visibility:
public

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