Array setLong() method in Java
Last Updated :
10 Nov, 2022
The java.lang.reflect.Array.setLong() is an inbuilt method in Java and is used to set a specified long value to a specified index of a given object array.
Syntax:
Array.setLong(Object []array, int index, long 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 long value that is to be set at the given index of the given array.
Return type: This is a void type method which doesn’t returns any value. The update reflects upon the Object array passed as the argument.
Exception: This method throws following exceptions.
Before Set : 1 2 3 4
After Set : 1 10 3 4
Program 2 : To demonstrate java.lang.NullPointerException
import java.lang.reflect.Array;
public class GfG {
public static void main(String[] args)
{
long b[] = null ;
try {
Array.setLong(b, 5 , 10 );
}
catch (Exception e) {
System.out.println( "Exception : " + e);
}
}
}
|
Output
Exception : java.lang.NullPointerException
Program 3 : To demonstrate java.lang.ArrayIndexOutOfBoundsException
import java.lang.reflect.Array;
public class GfG {
public static void main(String[] args)
{
long b[] = { 1 , 2 , 3 , 4 };
try {
Array.setLong(b, 5 , 10 );
}
catch (Exception e) {
System.out.println( "Exception : " + e);
}
}
}
|
Output
Exception : java.lang.ArrayIndexOutOfBoundsException
Program 4 : To demonstrate java.lang.IllegalArgumentException.
import java.lang.reflect.Array;
public class GfG {
public static void main(String[] args)
{
long b = 1 ;
try {
Array.setLong(b, 5 , 10 );
}
catch (Exception e) {
System.out.println( "Exception : " + e);
}
}
}
|
Output
Exception : java.lang.IllegalArgumentException: Argument is not an array
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