The
java.lang.reflect.Array.setInt() is an inbuilt method in Java and is used to set a specified int value to a specified index of a given object array.
Syntax:
Array.setInt(Object []array, int index, int value)
Parameter:
- 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 int value that is to be set at the given index of the given array.
Return Value: This is a void type method this doesn't returns any value. The update reflects upon the Object array passed as the argument.
Exception : This method throws following exception.
- 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 programs illustrate the Array.setInt() method:
Program 1 :
Output
Before Set : 1 2 3 4
After Set : 1 10 3 4
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.
