这个 getVersion() 方法 JAVA安全供应商 类用于返回此提供程序的版本号
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语法:
public double getVersion()
返回值: 此方法返回 此提供程序的版本号。
下面是一些例子来说明 getVersion() 方法:
例1:
// Java program to demonstrate // getVersion() method import java.security.*; import java.util.*; public class GFG1 { public static void main(String[] argv) throws Exception { 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(); // getting the version of the provider using getVersion() method double version = provider.getVersion(); // printing the string info System.out.println( "version : " + version); } catch (NoSuchAlgorithmException e) { System.out.println( "Exception thrown : " + e); } } } |
输出:
version : 1.8
例2:
// Java program to demonstrate // getVersion() method import java.security.*; import java.util.*; public class GFG1 { public static void main(String[] argv) throws Exception { 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(); // getting the version of the provider using getVersion() method double version = provider.getVersion(); // printing the string info System.out.println( "version : " + version); } catch (NoSuchAlgorithmException e) { System.out.println( "Exception thrown : " + e); } } } |
输出:
version : 1.8
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