java.security.Provider.Service类的getProvider()方法用于返回此提供程序服务对象的提供程序。
用法:
public final Provider getProvider()
返回值:此方法返回此提供程序服务对象的提供程序。
下面是说明getProvider()方法的示例:
范例1:
// Java program to demonstrate
// getProvider() method
import java.security.*;
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
{
try {
// creating the object of Signature
Signature sr
= Signature.getInstance(
"SHA1withDSA", "SUN");
// getting the Provider of the Signature sr
// by using method getProvider()
Provider provider = sr.getProvider();
// getting the service of the provider
// using getServices() method
Provider.Service service
= provider
.getService("Signature",
sr.getAlgorithm());
// getting Provider of Provider.Service object
// by using getProvider() method
Provider name = service.getProvider();
// display the result
System.out.println("Provider:" + name);
}
catch (NoSuchAlgorithmException e) {
System.out.println("Exception thrown:" + e);
}
catch (NoSuchProviderException e) {
System.out.println("Exception thrown:" + e);
}
}
}
输出:
Provider:SUN version 1.8
范例2:
// Java program to demonstrate
// getProvider() method
import java.security.*;
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
{
try {
// creating object of MessageDigest
MessageDigest msd
= MessageDigest.getInstance("MD5");
// getting the Provider of the Signature sr
// by using method getProvider()
Provider provider = msd.getProvider();
// getting the service of the provider
// using getServices() method
Provider.Service service
= provider
.getService("MessageDigest",
msd.getAlgorithm());
// getting Provider of Provider.Service object
// by using getProvider() method
Provider name = service.getProvider();
// display the result
System.out.println("Provider:" + name);
}
catch (NoSuchAlgorithmException e) {
System.out.println("Exception thrown:"
+ e);
}
}
}
输出:
Provider:SUN version 1.8
参考: https://docs.oracle.com/javase/9/docs/api/java/security/Provider.Service.html#getProvider-
相关用法
- Java KeyPairGenerator getProvider()用法及代码示例
- Java AlgorithmParameterGenerator getProvider()用法及代码示例
- Java KeyStore getProvider()用法及代码示例
- Java MessageDigest getProvider()用法及代码示例
- Java Signature getProvider()用法及代码示例
- Java KeyFactory getProvider()用法及代码示例
- Java SecureRandom getProvider()用法及代码示例
- Java AlgorithmParameters getProvider()用法及代码示例
- Java Java lang.Long.lowestOneBit()用法及代码示例
- Java Java lang.Long.numberOfTrailingZeros()用法及代码示例
- Java Java lang.Long.numberOfLeadingZeros()用法及代码示例
- Java Java lang.Long.byteValue()用法及代码示例
- Java Java lang.Long.reverse()用法及代码示例
- Java Java lang.Long.builtcount()用法及代码示例
- Java Java lang.Long.highestOneBit()用法及代码示例
注:本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 Provider.Service getProvider() method in Java with Examples。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。