Iterate through a HashMap

Explanation

If we want to Iterate through a HashMap we can use:

If you only want the keys, you can get them through the keySet() of the map:

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

for (String key : studyexpert.keySet()) {
    // ...
}

And if you only want to get the values, you can use values():

for (Object value : studyexpert.values()) {
    // ...
}

So finally, if you want both the key and the value, you can use entrySet():

for (Map.Entry<String, Object> entry : studyexpert.entrySet()) {
    String key = entry.getKey();
    Object value = entry.getValue();
    // ...
}

Also read, How do I update or sync a forked repository on GitHub?