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Java IdentityHashMap containsValue() method
Use the containsValue() method to check for the existence of a value. First, create a IdentityHashMap −
Map<String, Integer> m = new IdentityHashMap<String, Integer>();
Add some elements −
m.put("1", 100);
m.put("2", 200);
m.put("3", 300);
m.put("4", 150);
m.put("5", 110);
m.put("6", 50);
m.put("7", 90);
m.put("8", 250);
m.put("9", 350);
m.put("10", 450);Now check for the existence of a value −
m.containsValue(100))
The following is an example to implement containsValue() method −
Example
import java.util.*;
public class Demo {
public static void main(String[] args) {
Map<String, Integer> m = new IdentityHashMap<String, Integer>();
m.put("1", 100);
m.put("2", 200);
m.put("3", 300);
m.put("4", 150);
m.put("5", 110);
m.put("6", 50);
m.put("7", 90);
m.put("8", 250);
m.put("9", 350);
m.put("10", 450);
System.out.println("IdentityHashMap elements
"+ m);
System.out.println("Is value 100 in the Map? " + m.containsValue(100));
}
}Output
IdentityHashMap elements
{2 = 200, 4 = 150, 9 = 350, 7 = 90, 10 = 450, 6 = 50, 5 = 110, 8 = 250, 1 = 100, 3 = 300}
Is value 100 in the Map? true
Updated on: 25-Jun-2020
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