For keys of a map : HashMap « Collections Data Structure « Java

1. Java
2. Collections Data Structure
3. HashMap

For keys of a map

      

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

public class Main {
  public static void main(String[] argv) throws Exception {
    Map map = new HashMap();

    for (Iterator it = map.keySet().iterator(); it.hasNext();) {
      Object key = it.next();
    }
  }
}

   
    
    
    
    
    
  

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