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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< Integer > integersUnmodifiable = Set.of( 4 , 7 , 12 ) ;
  13.  
  14. 		Set< Integer > integers = new HashSet<>() ;
  15.     	integers.addAll( Set.of( 42 , 99 , 177 ) ) ;
  16.  
  17.     	Set< Integer > integersToBeReturned = Set.copyOf( integers ) ;
  18.  
  19.     	System.out.println( integersUnmodifiable ) ;
  20.     	System.out.println( integers ) ;
  21.     	System.out.println( integersToBeReturned ) ;
  22.  
  23.  
  24. 	}
  25. }
Success #stdin #stdout 0.06s 46996KB
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stdin
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Standard input is empty
stdout
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[4, 7, 12]
[177, 99, 42]
[99, 177, 42]
https://ideone.com/VtRrj2
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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