List vs Set

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import java.util.ArrayList;

import java.util.HashSet; import java.util.List; import java.util.Set;

public class SetAndListExample {

public static void main( String[] args )
{
    System.out.println("List example .....");
    List<String> list = new ArrayList<String>();
    list.add("1");
    list.add("2");
    list.add("3");
    list.add("4");
    list.add("1");

    for (String temp : list){
        System.out.println(temp);
    }

    System.out.println("Set example .....");
    Set<String> set = new HashSet<String>();
    set.add("1");
    set.add("2");
    set.add("3");
    set.add("4");
    set.add("1");
    set.add("2");
    set.add("5");

    for (String temp : set){
        System.out.println(temp);
    }
}

}

Output List example ….. 1 2 3 4 1 Set example ….. 3 2 10 5 4

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