Java Collection, TreeMap Exercises: Associate the specified value with the specified key in a TreeMap
Java Collection, TreeMap Exercises: Exercise-1 with Solution
Write a Java program to associate the specified value with the specified key in a Tree Map.
Sample Solution:-
Java Code:
import java.util.*;
public class Example1 {
public static void main(String args[]){
// Create a tree map
TreeMap<Integer,String> tree_map=new TreeMap<Integer,String>();
// Put elements to the map
tree_map.put(1, "Red");
tree_map.put(2, "Green");
tree_map.put(3, "Black");
tree_map.put(4, "White");
tree_map.put(5, "Blue");
for (Map.Entry<Integer,String> entry : tree_map.entrySet())
{
System.out.println(entry.getKey() + "=>" + entry.getValue());
}
}
}
Sample Output:
1=>Red 2=>Green 3=>Black 4=>White 5=>Blue
Java Code Editor:
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Previous: Get a collection view of the values contained in this map.
Next: Copy a Tree Map content to another Tree Map content.
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Java: Tips of the Day
How to sort an ArrayList?
Collections.sort(testList); Collections.reverse(testList);
That will do what you want. Remember to import Collections though!
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