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import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
public class Main {
public static void main(String[] a) {
Map<String,String> map = new HashMap<String,String>();
map.put("key1", "value1");
map.put("key2", "value2");
map.put("key3", "value3");
Set set = map.entrySet();
Iterator iter = set.iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
System.out.println(entry.getKey() + " -- " + entry.getValue());
}
}
}
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