📜  示例中的类 isPrimitive() 方法

📅  最后修改于: 2022-05-13 01:54:53.438000             🧑  作者: Mango

示例中的类 isPrimitive() 方法

Java.lang.Class 类isPrimitive()方法用于检查这个Class 是否是Primitive 类。如果这个 Class 是 Primitive 类,则该方法返回 true。否则返回 false。
句法:

public boolean isPrimitive()

参数:此方法不接受任何参数。
返回值:如果这个 Class 是 Primitive 类,则此方法返回true 。否则返回false
下面的程序演示了 isPrimitive() 方法。
示例 1:

Java
// Java program to demonstrate isPrimitive() 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 primitive
        // using isPrimitive() method
        System.out.println("Is Test a primitive: "
                           + myClass.isPrimitive());
    }
}


Java
// Java program to demonstrate isPrimitive() method
 
public class Test {
    public static void main(String[] args)
        throws ClassNotFoundException
    {
 
        // returns the Class object for this class
        Class myClass = int.class;
 
        // Check if myClass is an primitive
        // using isPrimitive() method
        System.out.println("Is myClass a primitive: "
                           + myClass.isPrimitive());
    }
}


输出:
Class represented by myClass: class Test
Is Test a primitive: false

示例 2:

Java

// Java program to demonstrate isPrimitive() method
 
public class Test {
    public static void main(String[] args)
        throws ClassNotFoundException
    {
 
        // returns the Class object for this class
        Class myClass = int.class;
 
        // Check if myClass is an primitive
        // using isPrimitive() method
        System.out.println("Is myClass a primitive: "
                           + myClass.isPrimitive());
    }
}
输出:
Is myClass a primitive: true

参考: https://docs.oracle.com/javase/9/docs/api/ Java/lang/Class.html#isPrimitive–