Mega Code Archive
Getting elements (key-value pairs) from a Hashtable
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public Set entrySet()
The entries in the returned Set are of type Map.Entry.
When working with the Set returned from entrySet(), you already have both the key and value together:
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
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");
Set set = table.entrySet();
Iterator it = set.iterator();
while (it.hasNext()) {
Map.Entry entry = (Map.Entry) it.next();
System.out.println(entry.getKey() + " : " + entry.getValue());
}
}
}
key3 : value3
key2 : value2
key1 : value1
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