📜  Java中的类 isArray() 方法及示例

📅  最后修改于: 2022-05-13 01:55:23.036000             🧑  作者: Mango

Java中的类 isArray() 方法及示例

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

public boolean isArray()

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

Java
// Java program to demonstrate isArray() 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 array
        // using isArray() method
        System.out.println("Is Test an array: "
                           + myClass.isArray());
    }
}


Java
// Java program to demonstrate isArray() method
 
public class Test {
    public static void main(String[] args)
        throws ClassNotFoundException
    {
        int[] T = new int[5];
 
        // Check if T is an array
        // using isArray() method
        System.out.println("Is T an array: "
                           + T.getClass().isArray());
    }
}


输出:
Class represented by myClass: class Test
Is Test an array: false

示例 2:

Java

// Java program to demonstrate isArray() method
 
public class Test {
    public static void main(String[] args)
        throws ClassNotFoundException
    {
        int[] T = new int[5];
 
        // Check if T is an array
        // using isArray() method
        System.out.println("Is T an array: "
                           + T.getClass().isArray());
    }
}
输出:
Is T an array: true

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