setByte() method of java.lang.reflect.Field used to set the value of a field as a byte on the specified object. When you need to set the value of a field of an object as byte then you can use this method to set value over an Object.
public void setByte(Object obj, byte b) throws IllegalArgumentException, IllegalAccessException
Parameters: This method accepts accepts two parameters:
- obj: which is the object whose field should be modified and
- b: 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 implementor thereof), or if an unwrapping conversion fails.
- NullPointerException: if the specified object is null and the field is an instance field.
- ExceptionInInitializerError: if the initialization provoked by this method fails.
Below programs illustrate setByte() method:
Value of leaveLeft before applying setByte is 12 Value of leaveLeft after applying setByte is 2 Value of age before applying setByte is 45 Value of age after applying setByte is 56
Value after applying setByte is 20
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