Hashtable keys Example
Hashtable class keys method example. public Enumeration keys() Returns an enumeration of the keys in this hashtable.
Here is the code
/**
* @ # Keys.java
* A class repersenting use to Keys method
* of HashMap class in java.util package
* version 19 May 2008
* author Rose India
*/
import java.util.*;
public class Keys {
public static void main(String args[]) {
Hashtable table = new Hashtable();
//Put value into the table
table.put(1, "A");
table.put(2, "B");
table.put(3, "C");
table.put(4, "D");
System.out.println("table :" + table);
System.out.println("Keys of table are...");
Enumeration e = table.keys();
while (e.hasMoreElements()) {
System.out.println(e.nextElement());
}
}
} |
Output
table :{4=D, 3=C, 2=B, 1=A}
Keys of table are...
4
3
2
1 |
|
