HashMap Iteration using a for loop

Question

I have String array values in a hash map. I need to retrieve that using for loop and store it in a String array. Could anybody show me how with a simple example?

• Elliott Frisch: Please edit your question to include your current code.

Answer 1

Use values() method.

HashMap<K,V> map = ...;
for(V v : map.values()){
 // Use v 
}

Answer 2

Use it by this example:

Map<Integer, String> exampleMap = new HashMap<Integer, String>();
for (String value : exampleMap.values()) {
 System.out.println("Value : " + value);
 }

• D3X: There is another similar question Check This Out

Answer 3

Taking your question literally, it seems you have:

Map<String, String[]> map; 

You haven't said what the key type is - assuming String, but doesn't matter for this.

To iterate over the values:

for (String[] array : map.values()) {
 // do something with array
}

Answer 4

HashMap<Integer,String> hm;
int i=0;
for(Map.Entry<Integer,String> e : hm.entrySet())
{
 stringArray[i] = e.getValue();
 i++;
}

Assuming that you have Integer keys.

• Deepak A: can u pls explain this if i have more keys with same string array values..same code will work out?
• soyeb84: Yes, it doesn't matter if you have same String values.