Java Collection, TreeSet Exercises: Create a new tree set, add some colors and print out the tree set
Java Collection, TreeSet Exercises: Exercise-1 with Solution
Write a Java program to create a new tree set, add some colors (string) and print out the tree set.
Sample Solution:
Java Code:
import java.util.TreeSet;
public class Exercise1 {
public static void main(String[] args) {
TreeSet<String> tree_set = new TreeSet<String>();
tree_set.add("Red");
tree_set.add("Green");
tree_set.add("Orange");
tree_set.add("White");
tree_set.add("Black");
System.out.println("Tree set: ");
System.out.println(tree_set);
}
}
Sample Output:
Tree set: [Black, Green, Orange, Red, White]
Flowchart:
Java Code Editor:
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How to sort an ArrayList?
Collections.sort(testList); Collections.reverse(testList);
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