Example
Verify the presence of a value within a map.
import java.util.HashMap;
public class Main {
public static void main(String[] args) {
HashMap<String, String> capitalCities = new HashMap<String, String>();
capitalCities.put("England", "London");
capitalCities.put("Germany", "Berlin");
capitalCities.put("Norway", "Oslo");
capitalCities "Washington DC");
System.out.println(capitalCities.containsValue("London"));
System.out.println(capitalCities.containsValue("Ottawa"));
}
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Definition and Usage
The containsValue() method returns true if a map contains an entry with the specified value, and false otherwise.
Syntax
public boolean containsValue(Object value)
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Parameter Values
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Parameter
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Description
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key
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Required: The value to be searched for.
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Technical Details
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Returns:
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It returns true if an entry with the specified value exists in the map; otherwise, it returns false.
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