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Class getComponentType() method in Java with Examples

  • Last Updated : 28 Nov, 2019

The getComponentType() method of java.lang.Class class is used to get the Class representing the component type of an array, if this class represents one. Else it returns null.

Syntax:

public Class getComponentType()

Parameter: This method does not accept any paramter.

Return Value: This method returns Class representing the component type of an array if this class represents one. Else it returns null.

Below programs demonstrate the getComponentType() method.



Example 1:




// Java program to demonstrate getComponentType() method
  
import java.util.*;
  
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());
  
        // Get the type of interfaces of myClass
        // using getComponentType() method
        System.out.println("ComponentType of myClass: "
                           + myClass.getComponentType());
    }
}
Output:
Class represented by myClass: class Test
ComponentType of myClass: null

Example 2:




// Java program to demonstrate getComponentType() method
  
import java.util.*;
  
public class Test {
  
    public static void main(String[] args)
        throws ClassNotFoundException
    {
  
        int[] Arr = new int[5];
  
        // returns the Class object
        Class arrClass = Arr.getClass();
  
        // Get the ComponentType of arrClass
        // using getComponentType() method
        System.out.println("ComponentType of myClass: "
                           + arrClass.getComponentType());
    }
}
Output:
ComponentType of myClass: int

Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#getComponentType–

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