The
java.lang.reflect.Array.setFloat() is an inbuilt method in Java and is used to change a specified float value to a specified index of a given object array.
Syntax:
Array.setFloat(Object []array, int index, float value)
Parameter: This method takes three parameters:
- array: This is an array of type Object which is to be updated.
- index: This is the index of the array which is to be updated.
- value: This is the float value that is to be set at the given index of the given array.
Return Value : Since this method has a void return type, hence it doesn't returns any value. The update reflects upon the Object array passed as the argument.
Exception: This method throws following exceptions:
- NullPointerException– when the array is null.
- IllegalArgumentException– when the given object array is not an Array.
- ArrayIndexOutOfBoundsException– if the given index is not in the range of the size of the array.
Below is the implementation of Array.setFloat() method:
Program 1:
Output:
Before Set : 1.0 2.0 3.0
After Set : 1.0 4.0 3.0
Program 2: To demonstrate java.lang.NullPointerException
Output:
Exception : java.lang.NullPointerException
Program 3: To demonstrate java.lang.ArrayIndexOutOfBoundsException
Output:
Exception : java.lang.ArrayIndexOutOfBoundsException
Program 4: To demonstrate java.lang.IllegalArgumentException
