Java Class isPrimitive() Method

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Description

The Java Class isPrimitive() method determines if the specified Class object represents a primitive type.There are nine predefined Class objects to represent the eight primitive types and void. These are created by the Java Virtual Machine, and have the same names as the primitive types that they represent i.e. boolean, byte, char, short, int, long, float, and double.

Declaration

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

public boolean isPrimitive()

Parameters

NA

Return Value

This method returns true if and only if this class represents a primitive type.

Exception

NA

Getting Primitive Status of a Non-Primitive Class Example

The following example shows the usage of java.lang.Class.isPrimitive() method. In this program, we've created an instance of ClassDemo and then using getClass() method, the class of the instance is retrieved. Using isPrimitive(), we've retrieved primitive class status of the class and result is printed.

package com.tutorialspoint;

public class ClassDemo {

   public static void main(String[] args) {

      // returns the Class object associated with this class
      ClassDemo cl = new ClassDemo();
      Class c1Class = cl.getClass();

      // checking for primitive type
      boolean retval1 = c1Class.isPrimitive();
      System.out.println("c1 is primitive type? = " + retval1);
   }
}

Output

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

c1 is primitive type? = false

Getting Primitive Status of a Primitive Class Example

The following example shows the usage of java.lang.Class.isMemberClass() method. In this program, we've used class of int and then using isPrimitive(), we've retrieved primitive class status of the class and result is printed.

package com.tutorialspoint;

public class ClassDemo {

   public static void main(String[] args) {

      // returns the Class object associated with an integer
      int k = 5;
      Class kClass = int.class;

      // checking for primitive type?
      boolean retval2 = kClass.isPrimitive();
      System.out.println("k is primitive type? = " + retval2);
   }
}

Output

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

k is primitive type? = true