Field setShort() method in Java with Examples

The setShort() method of java.lang.reflect.Field is used to set the value of a field as a short on the specified object. When you need to set the value of a field of an object as short then you can use this method to set value over an Object. Syntax:

public void setShort(Object obj, short s)
         throws IllegalArgumentException,
                IllegalAccessException

Parameters: This method accepts  two parameters:

• obj: which is the object whose field should be modified and
• s: which is the new value for the field of obj being modified.

Return: This method returns nothing.

Exception: This method throws the following Exception:

• IllegalAccessException: if this Field object is enforcing Java language access control and the underlying field is either inaccessible or final.
• IllegalArgumentException: if the specified object is not an instance of the class or interface declaring the underlying field (or a subclass or implementer thereof), or if an unwrapping conversion fails.
• NullPoshorterException: if the specified object is null and the field is an instance field.
• ExceptionInitializerError: if the initialization provoked by this method fails.

Below programs illustrate setShort() method: 

Program 1:

Java

// Java program to illustrate setShort() method

import java.lang.reflect.Field;

public class GFG {

    public static void main(String[] args)
        throws Exception
    {

        // create user object
        Employee emp = new Employee();

        // print value of uniqueNo
        System.out.println(
            "Value of uniqueNo before "
            + "applying setShort is "
            + emp.uniqueNo);

        // Get the field object
        Field field
            = Employee.class
                  .getField("uniqueNo");

        // Apply setShort Method
        field.setShort(emp, (short)134);

        // print value of uniqueNo
        System.out.println(
            "Value of uniqueNo after "
            + "applying setShort is "
            + emp.uniqueNo);
    }
}

// sample class
class Employee {

    // static short values
    public static short uniqueNo = 239;
}

Output:

Value of uniqueNo before applying setShort is 239
Value of uniqueNo after applying setShort is 134

Program 2:

Java

// Java Program to illustrate setShort() method

import java.lang.reflect.Field;

public class GFG {

    public static void main(String[] args)
        throws Exception
    {

        // create Numbers object
        Numbers no = new Numbers();

        // Get the value field object
        Field field
            = Numbers.class.getField("value");

        // Apply setShort Method
        field.setShort(no, (short)5366);

        // print value of isActive
        System.out.println(
            "Value after "
            + "applying setShort is "
            + Numbers.value);
    }
}

// sample Numbers class
class Numbers {

    // static short value
    public static short value = 13685;
}

Output:

Value after applying setShort is 5366

References: https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Field.html#setShort-java.lang.Object-short-