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:

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// 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 prperty 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);
        }
    }
}

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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:

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// 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 prperty 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);
        }
    }
}

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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


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