Three ways to iterate a HashMap in Java

java: HasMap-Iterator.java

Map<String, Object> map = ...;

//If only interested in the keys, you can iterate through the keySet() of the map:
for (String key : map.keySet()) {
    // ...
}

//If only need the values, use values():
for (Object value : map.values()) {
    // ...
}

//Finally, if want both the key and value, use entrySet():
for (Map.Entry<String, Object> entry : map.entrySet()) {
    String key = entry.getKey();
    Object value = entry.getValue();
    // ...
}