import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class RemoveDuplicateValues {
public static void main(String[] args) {
// TODO Auto-generated method stub
// create and display a List<String>
String[] colors = {"red", "white", "blue", "green", "gray",
"orange", "tan", "white", "cyan", "peach", "gray", "orange"};
List<String> list = Arrays.asList(colors);
System.out.printf("List: %s%n", list);
// eliminate duplicates then print the unique values
printNonDuplicates(list);
}
// create a Set from a Collection to eliminate duplicates
private static void printNonDuplicates(Collection<String> values)
{
// create a HashSet
Set<String> set = new HashSet<>(values);
System.out.printf("%nNonduplicates are: ");
for (String value : set)
System.out.printf("%s ", value);
System.out.println();
}
}
Console：
List: [red, white, blue, green, gray, orange, tan, white, cyan, peach, gray, orange]
Nonduplicates are: tan green peach cyan red orange gray white blue
