Remove all values from Map

 
import java.util.Map;
import java.util.TreeMap;

public class Main {
  public static void main(String[] args) {
    Map<String,String> treeMap = new TreeMap<String,String>();
    treeMap.put("1", "One");
    treeMap.put("2", "Two");
    treeMap.put("3", "Three");

    treeMap.clear();
    System.out.println(treeMap.size());
  }
}
  
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Collection Map:
  1. Convert map to String
  2. Convert a map to a synchronized Map
  3. Get a key from value with a Map
  4. Get a set view of Keys from Map
  5. Get Size of a Map
  6. Get entry set from map
  7. Get Keys stored in an array from a map
  8. Get Values in an array from a map
  9. Is a particular key exists in Map
  10. Is a particular value exists in the Map
  11. Iterate the key value pair in a Map
  12. Iterate through the values of a Map
  13. Iterate both the keys and values of a map
  14. Remove by key from a Map
  15. Remove all values from Map