Java 中的类 getCanonicalName()方法，示例
原文:https://www . geesforgeks . org/class-getcanonicalname-method-in-Java-with-examples/
java.lang.Class 类 的 getCanonicalName() 方法用于获取这个类的规范名，这是 java 语言规范定义的规范名。方法以字符串的形式返回此类的规范名称。
语法:
public String getCanonicalName()
参数:此方法不接受任何参数。
返回值:这个方法以字符串的形式返回这个类的规范名。
下面的程序演示了 getCanonicalName()方法。
例 1:
// Java program to demonstrate getCanonicalName() 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 canonical name of myClass
// using getCanonicalName() method
System.out.println("CanonicalName of myClass: "
+ myClass.getCanonicalName());
}
}
输出:
Class represented by myClass: class Test
CanonicalName of myClass: Test
例 2:
// Java program to demonstrate getCanonicalName() method
import java.util.*;
class Main {
public Object obj;
Main()
{
class Arr {
};
obj = new Arr();
}
public static void main(String[] args)
throws ClassNotFoundException
{
Main t = new Main();
// returns the Class object
Class myClass = t.obj.getClass();
System.out.println("Class represented by myClass: "
+ myClass.toString());
// Get the canonical name of myClass
// using getCanonicalName() method
System.out.println("CanonicalName of myClass: "
+ myClass.getCanonicalName());
}
}
输出:
Class represented by myClass: class Main$1Arr
CanonicalName of myClass: null
参考:https://docs . Oracle . com/javase/9/docs/API/Java/lang/class . html # getCanonicalName–
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