Java中的类 getSigners() 方法和示例
Java.lang.Class 类的getSigners()方法用于获取该类的签名者。该方法返回此类的签名者。如果此对象表示原始类型或 void,则此方法返回 null。
句法:
public Object[] getSigners()
参数:此方法不接受任何参数。
返回值:此方法返回此类的签名者。如果此对象表示原始类型或 void,则此方法返回 null。
下面的程序演示了 getSigners() 方法。
示例 1:
Java
// Java program to demonstrate getSigners() method
import java.util.*;
public class Test {
public static void main(String[] args)
throws ClassNotFoundException
{
// returns the Class object for this class
Class myClass = Class.forName("Test");
System.out.println("Class represented by myClass: "
+ myClass.toString());
// Get the signers of myClass
// using getSigners() method
System.out.println(
"Signers of myClass: "
+ Arrays.toString(
myClass.getSigners()));
}
}
Java
// Java program to demonstrate getSigners() method
import java.util.*;
public class Test {
public static void main(String[] args)
throws ClassNotFoundException
{
// returns the Class object
Class myClass = Class.forName("java.lang.Integer");
// Get the signers of myClass
// using getSigners() method
System.out.println(
"Signers of myClass: "
+ Arrays.toString(
myClass.getSigners()));
}
}
输出:
Class represented by myClass: class Test
Signers of myClass: null
示例 2:
Java
// Java program to demonstrate getSigners() method
import java.util.*;
public class Test {
public static void main(String[] args)
throws ClassNotFoundException
{
// returns the Class object
Class myClass = Class.forName("java.lang.Integer");
// Get the signers of myClass
// using getSigners() method
System.out.println(
"Signers of myClass: "
+ Arrays.toString(
myClass.getSigners()));
}
}
输出:
Signers of myClass: null
参考: https://docs.oracle.com/javase/9/docs/api/ Java/lang/Class.html#getSigners–