Class getComponentType() method in Java with Examples

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:

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// 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());
    }
}

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Output:

Class represented by myClass: class Test
ComponentType of myClass: null

Example 2:

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// 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());
    }
}

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Output:

ComponentType of myClass: int

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

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