The setBoolean() method of java.lang.reflect.Field used to set the value of a field as a boolean on the specified object. When you need to set the value of a field of an object as boolean then you can use this method to set value over an Object.
public void setBoolean(Object obj, boolean z) throws IllegalArgumentException, IllegalAccessException
Parameters: This method accepts two parameters:
- obj: which is the object whose field should be modified and
- z: which is the new value for the field of obj being modified.
Return value: This method returns nothing.
Exception: This method throws 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 setBoolean() method:
Value before applying setBoolean is true Value after applying setBoolean is false
Value of isManager before applying setBoolean is true Value of isPresent before applying setBoolean is false Value of isManager before applying setBoolean is false Value of isPresent before applying setBoolean is true
Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more, please refer Complete Interview Preparation Course.