The containsValue(value) method of Properties class is used to check if this Properties object contains any mapping of this Value. It takes this value to be compared as parameter and returns a boolean value as result.
Syntax:
public Object containsValue(Object value)
Parameters: This method accepts a parameter value which is the value to be searched in this Properties.
Returns: This method returns a boolean value stating the result whether this value is present in this Properties object or not.
Below programs illustrate the containsValue(value) method:
Program 1:
// Java program to demonstrate// containsValue(value) method.  import java.util.*;  public class GFG {      // Main method    public static void main(String[] args)    {          // Create a properties and add some values        Properties properties = new Properties();        properties.put("Pen", 10);        properties.put("Book", 500);        properties.put("Clothes", 400);        properties.put("Mobile", 5000);          // Print Properties details        System.out.println("Current Properties: "                           + properties.toString());          // Check if 10 is present or not        // using containsValue()        System.out.println("Is 10 present: "                           + properties.containsValue(10));    }} |
Output:
Current Properties: {Book=500, Mobile=5000, Pen=10, Clothes=400}
Is 10 present: true
Program 2:
// Java program to demonstrate// containsValue(value) method.  import java.util.*;  public class GFG {      // Main method    public static void main(String[] args)    {          // Create a properties and add some values        Properties properties = new Properties();          properties.put(1, "100RS");        properties.put(2, "500RS");        properties.put(3, "1000RS");          // print Properties details        System.out.println("Current Properties: "                           + properties.toString());          // Check if 200RS is present or not        // using containsValue()        System.out.println("Is 200RS present: "                           + properties.containsValue("200RS"));    }} |
Output:
Current Properties: {3=1000RS, 2=500RS, 1=100RS}
Is 200RS present: false
References: https://docs.oracle.com/javase/9/docs/api/java/util/Properties.html#containsValue-java.lang.Object-
