java.security.Provider类的toString()方法用于返回带有此提供程序的名称和版本号的字符串。
用法:
public String toString()
返回值:此方法返回带有此提供程序的名称和版本号的字符串。
下面是说明toString()方法的示例:
示例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 KeyPairGenerator
KeyPairGenerator sr = KeyPairGenerator.getInstance("DSA", "SUN");
// getting the Provider of the KeyPairGenerator sr
// by using method getProvider()
Provider provider = sr.getProvider();
// getting the name and version of the provider
// using toString() method
String nv = provider.toString();
// printing the string info
System.out.println("Provider : " + nv);
}
catch (NoSuchAlgorithmException e) {
System.out.println("Exception thrown : " + e);
}
}
}
输出:
Provider : SUN version 1.8
示例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 SecureRandom
SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
// getting the Provider of the SecureRandom sr
// by using method getProvider()
Provider provider = sr.getProvider();
// getting the name and version of the provider
// using toString() method
String nv = provider.toString();
// printing the string info
System.out.println("Provider : " + nv);
}
catch (NoSuchAlgorithmException e) {
System.out.println("Exception thrown : " + e);
}
}
}
输出:
Provider : SUN version 1.8
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注:本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 Provider toString() 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。