Java Class isArray() Method

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Description

The Java Class isArray() method determines if this Class object represents an array class.

Declaration

Following is the declaration for java.lang.Class.isArray() method

public boolean isArray()

Parameters

NA

Return Value

This method returns true if this object represents an array class, else false.

Exception

NA

Getting Array Status of a Class Example

The following example shows the usage of java.lang.Class.isArray() method. In this program, we've created an instance of String and then using getClass() method, the class of the instance is retrieved. Using isArray(), we've retrieved status of String as array or not and printed it.

package com.tutorialspoint;

public class ClassDemo {

   public static void main(String[] args) {

      String str = "This is TutorialsPoint";

      Class cls = str.getClass();

      // returns true if this object represents an array class, else false      
      // checking for array
      boolean arr = cls.isArray();
      if(arr) {
         System.out.println("Result : " + cls.getName() + " is an array");
      } else {
         System.out.println("Result : " + cls.getName() + " is not an array");
      }
   }
} 

Output

Let us compile and run the above program, this will produce the following result −

Result : java.lang.String is not an array

Getting Array Status of an ArrayList Example

The following example shows the usage of java.lang.Class.isArray() method. In this program, we've used class of ArrayList. Using isArray(), we've retrieved status of ArrayList as array or not and printed it.

package com.tutorialspoint;

import java.util.ArrayList;

public class ClassDemo {

   public static void main(String[] args) {
      Class cls = ArrayList.class;
      
	  // returns true if this object represents an array class, else false
      // checking for array
      boolean arr = cls.isArray();
      if(arr) {
         System.out.println("Result : " + cls.getName() + " is an array");
      } else {
         System.out.println("Result : " + cls.getName() + " is not an array");
      }
   }
} 

Output

Let us compile and run the above program, this will produce the following result −

Result : java.util.ArrayList is not an array

Getting Array Status of an Array Example

The following example shows the usage of java.lang.Class.isArray() method. In this program, we've created an instance of String array and then using getClass() method, the class of the instance is retrieved. Using isArray(), we've retrieved status of String array as array and printed it.

package com.tutorialspoint;

public class ClassDemo {

   public static void main(String[] args) {

      String[] array = {"This is TutorialsPoint"};

      Class cls = array.getClass();

      // returns true if this object represents an array class, else false      
      // checking for array
      boolean arr = cls.isArray();
      if(arr) {
         System.out.println("Result : " + cls.getName() + " is an array");
      } else {
         System.out.println("Result : " + cls.getName() + " is not an array");
      }
   }
} 

Output

Let us compile and run the above program, this will produce the following result −

Result : [Ljava.lang.String; is an array