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30 lines
864 B
Java
30 lines
864 B
Java
Hash table
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import java.util.*;
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public class SortHashtabledesc {
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public static void main(String[] args) {
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// Create and populate hashtable
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Hashtable ht = new Hashtable();
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ht.put("abc",new Double(3445.23));
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ht.put("xyz",new Double(2333.56));
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ht.put("pqr",new Double(3900.88));
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ht.put("mno",new Double(2449.00));
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// Sort hashtable.
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Vector v = new Vector(ht.keySet());
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Collections.sort(v, Collections.reverseOrder());
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// Display (sorted) hashtable.
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for (Enumeration e = v.elements(); e.hasMoreElements();) {
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String key = (String)e.nextElement();
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System.out.println(key+":"+ht.get(key));
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System.out.println();
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}
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}
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}
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