The java.lang.Integer.sum() is a built-in method in java that returns the sum of its arguments. The method adds two integers together as per the + operator.
Syntax :
public static int sum(int a, int b)
Parameter: The method accepts two parameters that are to be added with each other: a : the first integer value. b : the second integer value.
Return Value: The method returns the sum of its arguments.
Exception: The method throws an ArithmeticException when the result overflows an int.
Examples:
Input: a = 170, b = 455 Output: 625 Input: a = 45, b = 45 Output: 90
Below programs illustrate the Java.lang.Integer.sum() method:
Program 1: For a positive number.
// Java program to illustrate the // Java.lang.Integer.sum() method import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
int a = 62 ;
int b = 18 ;
// It will return the sum of two arguments.
System.out.println( "The sum is ="
+ Integer.sum(a, b));
}
} |
The sum is =80
Program 2: Below program illustrates the exception.
// Java program to illustrate the // Java.lang.Integer.sum() method import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
// When very large integer is taken
int a = 92374612162 ;
int b = 181 ;
// It will return the sum of two arguments.
System.out.println( "The sum is ="
+ Integer.sum(a, b));
}
} |
prog.java:8: error: integer number too large: 92374612162 int a = 92374612162; ^ 1 error
Program 3 : Find the sum of integers using a loop
import java.io.*;
public class Arrays {
public static void main(String[] args)
{
int [] arr = { 2 , 4 , 6 , 8 , 10 };
int sum = 0 ;
for ( int i = 0 ; i < arr.length; i++) {
sum += arr[i];
}
System.out.println( "Sum of array elements is: "
+ sum);
}
} |
Sum of array elements is: 30