Collections Java Tutorial

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The Hashtable class overrides the toString() method of the Object class

public String toString()

import java.util.Hashtable;
public class MainClass {
  public static void main(String[] s) {
    Hashtable table = new Hashtable();
    table.put("key1", "value1");
    table.put("key2", "value2");
    table.put("key3", "value3");
    System.out.println(table);
  }
}
{key3=value3, key2=value2, key1=value1}