Provider entrySet() method in Java with Examples
The entrySet() method of java.security.Provider class is used to return an unmodifiable Set view of the property entries contained in this Provider.
Syntax:
public Set<Map.Entry> entrySet()
Return Value: This method returns a set view of the mappings contained in this map
Below are the examples to illustrate the elements() method:
Example 1:
// Java program to demonstrate// entrySet() 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 Set<Map.Entry<Object, Object> > set; // getting unmodifiable Set view of the property entries set = provider.entrySet(); // Creating the object of iterator to iterate set Iterator iter = set.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 : Alg.Alias.Signature.SHA1/DSA=SHA1withDSA Value is : Alg.Alias.Signature.1.2.840.10040.4.3=SHA1withDSA Value is : Alg.Alias.Signature.DSS=SHA1withDSA Value is : SecureRandom.SHA1PRNG ImplementedIn=Software Value is : KeyStore.JKS=sun.security.provider.JavaKeyStore$DualFormatJKS Value is : Alg.Alias.MessageDigest.SHA-1=SHA Value is : MessageDigest.SHA=sun.security.provider.SHA Value is : KeyStore.CaseExactJKS=sun.security.provider.JavaKeyStore$CaseExactJKS Value is : CertStore.com.sun.security.IndexedCollection ImplementedIn=Software Value is : Signature.SHA256withDSA=sun.security.provider.DSA$SHA256withDSA
Example 2:
// Java program to demonstrate// entrySet() method import java.security.*;import java.util.*; public class GFG1 { public static void main(String[] argv) throws Exception { // Declaring int value i int i = 10; try { // creating the object of KeyPairGenerator KeyPairGenerator sr = KeyPairGenerator.getInstance("DSA", "SUN"); // getting the Provider of the KeyPairGenerator sr // by using method getProvider() Provider provider = sr.getProvider(); // Declaring the variable of set<Map> type Set<Map.Entry<Object, Object> > set; // getting unmodifiable Set view of the property entries set = provider.entrySet(); // Creating the object of iterator to iterate set Iterator iter = set.iterator(); // printing the set elements System.out.println("unmodifiable Set view : \n "); while (i > 0) { System.out.println("Value is : " + iter.next()); i--; } } catch (NoSuchAlgorithmException e) { System.out.println("Exception thrown : " + e); } }} |
Output:
unmodifiable Set view : Value is : Alg.Alias.Signature.SHA1/DSA=SHA1withDSA Value is : Alg.Alias.Signature.1.2.840.10040.4.3=SHA1withDSA Value is : Alg.Alias.Signature.DSS=SHA1withDSA Value is : SecureRandom.SHA1PRNG ImplementedIn=Software Value is : KeyStore.JKS=sun.security.provider.JavaKeyStore$DualFormatJKS Value is : Alg.Alias.MessageDigest.SHA-1=SHA Value is : MessageDigest.SHA=sun.security.provider.SHA Value is : KeyStore.CaseExactJKS=sun.security.provider.JavaKeyStore$CaseExactJKS Value is : CertStore.com.sun.security.IndexedCollection ImplementedIn=Software Value is : Signature.SHA256withDSA=sun.security.provider.DSA$SHA256withDSA
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