iterate map in java

// Java program to demonstrate iteration over  
// Map using keySet() and values() methods 
  
import java.util.Map; 
import java.util.HashMap; 
  
class IterationDemo  
{ 
    public static void main(String[] arg) 
    { 
        Map<String,String> gfg = new HashMap<String,String>(); 
      
        // enter name/url pair 
        gfg.put("GFG", "geeksforgeeks.org"); 
        gfg.put("Practice", "practice.geeksforgeeks.org"); 
        gfg.put("Code", "code.geeksforgeeks.org"); 
        gfg.put("Quiz", "quiz.geeksforgeeks.org"); 
          
        // using keySet() for iteration over keys 
        for (String name : gfg.keySet())  
            System.out.println("key: " + name); 
          
        // using values() for iteration over keys 
        for (String url : gfg.values())  
            System.out.println("value: " + url); 
    } 
}