I created a project ("cryptolister"). Tried to upload the source code
(CryptoLister.java), but nothing happens when I click on "Commit" button. I
already have two other projects ("linkcheckermt" and "pricefinder") and
sources uploaded, so I don't understand what the problem is in uploading
source for another project. Please advise.
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// =============================================================================
// CryptoLister by Cary Scofield ([email protected]) is licensed under
// a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
// (See http://www.creativecommons.org for details).
//
// RECIPIENT ACCEPTS THE GOODS ?AS IS,? WITH NO REPRESENTATION OR WARRANTY
// OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION IMPLIED
// WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
// =============================================================================
package vicegrip;
import java.util.Set;
import java.util.Iterator;
import java.util.HashMap;
import java.util.ArrayList;
import java.security.Provider;
import java.security.Security;
/**
* This program is a utility that simply lists all the cryptographic algorithms
* available in your JDK installation grouped by service type.
*
* @author Cary Scofield ([email protected])
* @since 1.7
*/
public class CryptoLister {
public static void main( String[] args ) {
listAlgorithmsByType();
}
/**
* List cryptographic algorithms by service type.
* <p>
* The main data structure is a hash map using service types as the keys.
* Each value entry in the hash map is a list containing the names of the
* algorithms for that service type.
* </p>
*/
private static void listAlgorithmsByType() {
HashMap<String,ArrayList> algorithmTypes =
new HashMap<String,ArrayList>();
Provider[] providers = Security.getProviders();
//
// Build the hash map.
//
for( Provider provider : providers ) {
Set<Provider.Service> services = provider.getServices();
Iterator<Provider.Service> servicesIter = services.iterator();
while( servicesIter.hasNext() ) {
Provider.Service service = servicesIter.next();
ArrayList<Provider.Service> serviceList =
algorithmTypes.get( service.getType() );
if( serviceList == null ) {
serviceList = new ArrayList<Provider.Service>();
serviceList.add( service );
algorithmTypes.put( service.getType(), serviceList);
}
else {
serviceList.add( service );
}
}
}
//
// Dump the contents of the hash map.
//
Set<String> types = algorithmTypes.keySet();
Iterator<String> typeIter = types.iterator();
while( typeIter.hasNext() ) {
String type = typeIter.next();
System.out.println(type);
ArrayList<Provider.Service> serviceList =
algorithmTypes.get(type);
Iterator<Provider.Service> services = serviceList.iterator();
while( services.hasNext() ) {
Provider.Service service = services.next();
System.out.format( "\t%s%n", service.getAlgorithm() );
}
}
}
}
