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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. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		Set<String> set2 = new HashSet();
  13. 		set2.add("1;2");
  14. 		Set<String> set1 = new HashSet();
  15. 		set1.add("1");
  16. 		set1.add("2");
  17. 		set1.add("3");
  18. 		set1.forEach( k -> {
  19.             for (String s : set2) {
  20.                 if(s.split(";")[0].equals(k)){
  21.                     //do something
  22.                     System.out.println(k);
  23.                 }
  24.             }
  25. 		});
  26. 	}
  27. }
Success #stdin #stdout 0.08s 711168KB
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https://ideone.com/LT5MKR
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

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