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  1. import java.util.HashSet;
  2. class Main{
  3. 	public static void main(String[] args) {
  4. 		HashSet<String> set1 = new HashSet<String>();
  5. 		HashSet<String> set2 = new HashSet<String>();
  6. 		String strB1 = "B";
  7. 		String strB2 = "B";
  8.  
  9. 		set1.add( "A" );
  10. 		set1.add( strB1 );
  11. 		set2.add( strB2 );
  12.  
  13. 		set1.removeAll( set2 );
  14. 		System.out.println(set1);
  15. 	}
  16. }
Success #stdin #stdout 0.06s 215552KB
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[A]
https://ideone.com/o1aIS
language:
Java (12.0.1)
created:
13 years ago
visibility:
public

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