Java Class isSynthetic()方法及实例

Java Class isSynthetic()方法及实例

java.lang.Class类isSynthetic() 方法是用来检查该类是否为合成类。如果该类是合成类,该方法返回true。否则返回false。
语法

public boolean isSynthetic()

参数: 该方法不接受任何参数。

返回值: 如果这个类是合成类,该方法返回 true 。否则返回 false

下面的程序演示了isSynthetic()方法。

例1 :

// Java program to demonstrate isSynthetic() method
 
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());
 
        // Check if this class is an synthetic
        // using isSynthetic() method
        System.out.println("Is Test an synthetic: "
                           + myClass.isSynthetic());
    }
}

输出

Class represented by myClass: class Test
Is Test an synthetic: false

例2 :

// Java program to demonstrate isSynthetic() method
 
// declaring an Annotation Type
@interface A {
    // interface element definitions
}
 
public class Test {
    public static void main(String[] args)
        throws ClassNotFoundException
    {
 
        // returns the Class object for A
        Class myClass = A.class;
 
        // Check if myClass is an synthetic
        // using isSynthetic() method
        System.out.println("Is A an synthetic: "
                           + myClass.isSynthetic());
    }
}

输出

Is A an synthetic: false

参考资料: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#isSynthetic-

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