带有示例的Java签名 getAlgorithm() 方法

Java.security.Signature类的getAlgorithm()方法用于返回此签名对象的算法名称。
句法：

public final String getAlgorithm()

返回值：此方法返回此签名对象的算法名称。
以下是说明 getAlgorithm() 方法的示例：
示例 1：

Java

// Java program to demonstrate
// getAlgorithm() 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");
 
            // getting the Algorithm
            // by using method getAlgorithm()
            String algo = sr.getAlgorithm();
 
            // printing the string algo
            System.out.println("Algorithm: " + algo);
        }
 
        catch (NoSuchAlgorithmException e) {
 
            System.out.println("Exception thrown : " + e);
        }
    }
}

输出：

Algorithm: SHA1withDSA

示例 2：

Java

// Java program to demonstrate
// getAlgorithm() 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("NONEwithDSA");
 
            // getting the Algorithm
            // by using method getAlgorithm()
            String algo = sr.getAlgorithm();
 
            // printing the string algo
            System.out.println("Algorithm: " + algo);
        }
 
        catch (NoSuchAlgorithmException e) {
 
            System.out.println("Exception thrown : " + e);
        }
    }
}

输出：

Algorithm: NONEwithDSA