Snippets tagged “iterator”

If you want to remove elements from a collection while iterating over it using a for-each loop in Java, you must use an iterator instead of the looping construct.

To get the first key-value pair from a HashMap in Java, you can use the entrySet() method to get a set of the map's entries and then use the iterator() method to get an iterator for the set.

There are several ways to iterate over the entries in a Map in Java. Here are some options:

To get the first element of a List or Set in Java, you can use the following methods:

To iterate over the key/value pairs in a JSONObject, you can use the keys method to get an iterator over the keys in the object, and then use the get method to get the value for each key.

There are several ways to iterate through a HashMap in Java: Using the for-each loop

To get the first item from a collection in Java, you can use the iterator() method to get an iterator for the collection, and then call the next() method on the iterator to get the first element.

There are several ways to iterate over a List in Java. Here are some of the most common approaches:

There are several ways you can iterate through the characters of a string in Java.