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Modifier isVolatile(mod) method in Java with Examples

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  • Last Updated : 24 Sep, 2019
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The isVolatile(mod) method of java.lang.reflect.Modifier is used to check if the integer argument includes the volatile modifier or not. If this integer parameter represents volatile type Modifier then method returns true else false.

Syntax:

public static boolean isVolatile(int mod)

Parameters: This method accepts integer mod as parameter which represents a set of modifiers.

Return: This method returns true if mod includes the volatile modifier; false otherwise.

Below programs illustrate isVolatile() method:
Program 1:




// Java program to illustrate isVolatile() method
  
import java.lang.reflect.*;
  
public class GFG {
  
    volatile static String field1 = "GeeksForGeeks";
  
    public static void main(String[] args)
        throws NoSuchFieldException,
               SecurityException
    {
  
        // get Field class object
        Field field
            = GFG
                  .class
                  .getDeclaredField("field1");
  
        // get Modifier Integer value
        int mod = field.getModifiers();
  
        // check Modifier is volatile or not
        boolean result
            = Modifier.isVolatile(mod);
  
        System.out.println("Mod integer value "
                           + mod
                           + " is volatile : "
                           + result);
    }
}


Output:

Mod integer value 72 is volatile : true

Program 2:




// Java program to illustrate isVolatile()
  
import java.lang.reflect.*;
  
public class GFG {
  
    volatile Long number
        = 139892824314253L;
  
    public static void main(String[] args)
        throws NoSuchFieldException,
               SecurityException
    {
  
        // get Field class object
        Field field
            = GFG
                  .class
                  .getDeclaredField("number");
  
        // get Modifier Integer value
        int mod = field.getModifiers();
  
        // check Modifier is volatile or not
        boolean result
            = Modifier.isVolatile(mod);
  
        System.out.println("Mod integer value "
                           + mod
                           + " is volatile : "
                           + result);
    }
}


Output:

Mod integer value 64 is volatile : true

References: https://docs.oracle.com/javase/10/docs/api/java/lang/reflect/Modifier.html#isVolatile(int)


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