Java Provider toString()用法及代碼示例

java.security.Provider類的toString()方法用於返回帶有此提供程序的名稱和版本號的字符串。

用法:

public String toString()

返回值：此方法返回帶有此提供程序的名稱和版本號的字符串。

下麵是說明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); 
        } 
    } 
}

輸出：

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); 
        } 
    } 
}

輸出：

Provider : SUN version 1.8

相關用法

注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 Provider toString() method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。