Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind Java How To Loop Through a HashMap?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Fill blank
Complete the missing token from the example code.
// ___ keysLoop Through a HashMap
Loop through the items of a HashMap with a for-each loop.
Note
Use the keySet() method if you only want the keys, and use the values() method if you only want the values:
Example
// Print keys
for (String i : capitalCities.keySet()) {
System.out.println(i);
}Example
// Print values
for (String i : capitalCities.values()) {
System.out.println(i);
}Example
// Print keys and values
for (String i : capitalCities.keySet()) {
System.out.println("key: " + i + " value: " + capitalCities.get(i));
}Related Pages
Java HashMap Methods