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clear all elements from treemap void Clear()

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                     This tutorial explains how to clear all elements from treemap using Clear() method. we can’t clear the particular data ,it will clear    all the data.

Example


import java.util.TreeMap;

public class TreeMapClear

{

public static void main(String a[])

{

   TreeMap<String, String> hm = new TreeMap<String, String>();

   hm.put("first", "FIRST INSERTED");

   hm.put("second", "SECOND INSERTED");

   hm.put("third","THIRD INSERTED");

   System.out.println(hm);

   System.out.println("Value of second: "+hm.get("second"));

   System.out.println("Is TreeMap empty? "+hm.isEmpty());

   hm.clear();

   System.out.println(hm);
  }

}

Output

         {first=FIRST INSERTED, second=SECOND INSERTED, third=THIRD INSERTED}

         Value of second: SECOND INSERTED

          Is TreeMap empty? false

                      {}

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Filed in: Java Examples

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