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  1.  
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. class Demo {
  8.  
  9.     public static void main(String a[]){
  10.  
  11.         LinkedHashSet<String> s1 = new LinkedHashSet<String>();
  12.         s1.add("first");
  13.         s1.add("second");
  14.         s1.add("third");
  15.         System.out.println(s1);
  16.         HashSet<String> subSet = new HashSet<String>();
  17.         subSet.add("s1");
  18.         subSet.add("s2");
  19.         s1.addAll(subSet);
  20.         System.out.println("LinkedHashSet content after adding another collection:");
  21.         System.out.println(s1);
  22.     }
  23. }
Success #stdin #stdout 0.05s 4386816KB
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Standard input is empty
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[first, second, third]
LinkedHashSet content after adding another collection:
[first, second, third, s1, s2]
https://ideone.com/Lp21hL
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
secret

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