Provider values() method in Java with Examples

The values() method of java.security.Provider class is used to return an unmodifiable Collection view of the property values contained in this provider.
Syntax:

public Collection<Object> values()

Return Value: This method returns a collection view of the values contained in this map.
Below are the examples to illustrate the values() method:
Example 1:

Java

// Java program to demonstrate
// values() method

import java.security.*;
import java.util.*;

public class GFG1 {
    public static void main(String[] argv)
    {
        // Declaring int value i
        int i = 10;

        try {
            // creating the object of Signature
            Signature sr = Signature.getInstance("SHA1withDSA");

            // getting the Provider of the  Signature sr
            // by using method getProvider()
            Provider provider = sr.getProvider();

            // Declaring the variable of set<Map> type
            Collection<Object> value;

            // getting unmodifiable Set view of the property value
            value = provider.values();

            // Creating the object of iterator to iterate set
            Iterator iter = value.iterator();

            // printing the set elements
            System.out.println("unmodifiable Set view : \n ");
            while (i > 0) {
                System.out.println("Value is : " + iter.next());
                i--;
            }
        }

        catch (NoSuchAlgorithmException e) {

            System.out.println("Exception thrown : " + e);
        }
    }
}

Output:

unmodifiable Set view : 
 
Value is : SHA1withDSA
Value is : SHA1withDSA
Value is : SHA1withDSA
Value is : Software
Value is : sun.security.provider.JavaKeyStore$DualFormatJKS
Value is : SHA
Value is : sun.security.provider.SHA
Value is : sun.security.provider.JavaKeyStore$CaseExactJKS
Value is : Software
Value is : sun.security.provider.DSA$SHA256withDSA

Example 2:

Java

// Java program to demonstrate
// values() method

import java.security.*;
import java.util.*;

public class GFG1 {
    public static void main(String[] argv)
    {
        // Declaring int value i
        int i = 10;

        try {
            // creating the object of SecureRandom
            SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");

            // getting the Provider of the  SecureRandom sr
            // by using method getProvider()
            Provider provider = sr.getProvider();

            // Declaring the variable of set<Map> type
            Collection<Object> value;

            // getting unmodifiable Set view of the property value
            value = provider.values();

            // Creating the object of iterator to iterate set
            Iterator iter = value.iterator();

            // printing the set elements
            System.out.println("unmodifiable Set view : \n ");
            while (i > 0) {
                System.out.println("Value is : " + iter.next());
                i--;
            }
        }

        catch (NoSuchAlgorithmException e) {

            System.out.println("Exception thrown : " + e);
        }
    }
}

Output:

unmodifiable Set view : 
 
Value is : SHA1withDSA
Value is : SHA1withDSA
Value is : SHA1withDSA
Value is : Software
Value is : sun.security.provider.JavaKeyStore$DualFormatJKS
Value is : SHA
Value is : sun.security.provider.SHA
Value is : sun.security.provider.JavaKeyStore$CaseExactJKS
Value is : Software
Value is : sun.security.provider.DSA$SHA256withDSA