Java HashMap values() Method
Java HashMapThe values() method returns a Set view of all values contained in the map.
The syntax of the values() method is:
hashmap.values()
Note:hashmap is an object of the HashMap class.
Parameter Description:
- None
Return Value
Returns a collection view of all values in the HashMap.
Example
The following example demonstrates the use of the values() method:
Example
import java.util.HashMap;
class Main {
public static void main(String[] args) {
// Create a HashMap
HashMap<Integer, String> sites = new HashMap<>();
// Add some elements to the HashMap
sites.put(1, "Google");
sites.put(2, "Example");
sites.put(3, "Taobao");
System.out.println("sites HashMap: " + sites);
// Return a view of all values
System.out.println("Values: " + sites.values());
}
}
class Main {
public static void main(String[] args) {
// Create a HashMap
HashMap<Integer, String> sites = new HashMap<>();
// Add some elements to the HashMap
sites.put(1, "Google");
sites.put(2, "Example");
sites.put(3, "Taobao");
System.out.println("sites HashMap: " + sites);
// Return a view of all values
System.out.println("Values: " + sites.values());
}
}
The output of the above program is:
sites HashMap: {1=Google, 2=Example, 3=Taobao}
Values: [Google, Example, Taobao]
The values() method can be used with a for-each loop to iterate over all values in the HashMap.
Example
import java.util.HashMap;
class Main {
public static void main(String[] args) {
// Create a HashMap
HashMap<Integer, String> sites = new HashMap<>();
// Add some elements to the HashMap
sites.put(1, "Google");
sites.put(2, "Example");
sites.put(3, "Taobao");
System.out.println("sites HashMap: " + sites);
// Access all the values in the HashMap
System.out.print("Values: ");
// values() returns a view of all values
// The for-each loop can access each value from the view
for(String value: sites.values()) {
// Output each value
System.out.print(value + ", ");
}
}
}
class Main {
public static void main(String[] args) {
// Create a HashMap
HashMap<Integer, String> sites = new HashMap<>();
// Add some elements to the HashMap
sites.put(1, "Google");
sites.put(2, "Example");
sites.put(3, "Taobao");
System.out.println("sites HashMap: " + sites);
// Access all the values in the HashMap
System.out.print("Values: ");
// values() returns a view of all values
// The for-each loop can access each value from the view
for(String value: sites.values()) {
// Output each value
System.out.print(value + ", ");
}
}
}
The output of the above program is:
sites HashMap: {1=Google, 2=Example, 3=Taobao}
Values: Google, Example, Taobao,
Other Extensions