Java Class isPrimitive()方法及示例

Java Class isPrimitive()方法及示例

java.lang.Class类isPrimitive() 方法用于检查该类是否为原始类。如果这个类是原始类,该方法返回true。否则返回false。
语法:

public boolean isPrimitive()

参数: 该方法不接受任何参数。

返回值: 如果这个类是原始类,该方法返回 true 。否则返回 false

下面的程序演示了isPrimitive()方法。

示例1:

// Java 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());
    }
}

输出

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

例2:

// 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

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

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