Java中的类 isArray() 方法及示例
Java.lang.Class 类的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–