import java.util.*;
public class MainClass {
public static void main(String args[]) {
TreeMap map = new TreeMap();
map.put("one","1");
map.put("two","2");
map.put("three","3");
displayMap(map);
}
static void displayMap(TreeMap map) {
Collection c = map.entrySet();
Iterator i = c.iterator();
while(i.hasNext()){
Object o = i.next();
System.out.print(o.toString());
}
}
}
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