Ways to Iterate HashMap

package collection_Codes;

import java.util.HashMap;

public class Hashmap_Iterate2 {

public static void main(String[] args)
{
HashMap<String,String> m = new HashMap<String,String>();
m.put("name", "Amit");
m.put("college","NIT");
m.put("profession","SE");

for(String s : m.keySet())
{
String val = m.get(s);
System.out.println(s +" "+val);
}

}

}

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package collection_Codes;

//Interface Entry is present inside MAP Interface. Entry has 3 methods:

// 1) Object getKey();

// 2) Object getValue();

// 3) Object setValue(Object );

//**********************************

import java.util.HashMap;

import java.util.Map;

public class HashMap_Iterate1 {

public static void main(String[] args) 

{

HashMap<String,String> m = new HashMap<String,String>();

m.put("name", "Amit");

m.put("college","NIT");

m.put("profession","SE");

for(Map.Entry<String,String> entry : m.entrySet())

{

System.out.println(entry.getKey()+" = "+entry.getValue());

}

}

}

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package ERRORS;

import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

public class Test {

public static void main(String[] args)
{
   Map<String,String> m  = new HashMap<>();
   m.put("game", "FOOTBALL");
   m.put("food", "Haldiram Full Thali");
   m.put("hobby", "WINNING");
   m.put("place", "America");
   m.put("bd", "7 AUGUST");
   // Now Iterate
 
   //********************************* Method 1
   for(String s1 : m.keySet())
   {
  System.out.println(s1 +" "+m.get(s1));
   }
 
   //********************************* Method 2
 
   Set <Entry<String , String>> entry = m.entrySet();  
   for(Entry<String, String> s1 : entry)
   {
   System.out.println(s1.getKey()+"  ~  "+s1.getValue());
   }  

}

}

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