The document presents a Java program named 'sumnumbers' that takes integer inputs from the user and calculates their sum until the user enters -1 to terminate the input. It uses a Scanner to read input and outputs the final sum once the loop is exited. The example includes sample input and expected output demonstrating the program's functionality.

1. SumNumbers.java
import java.util.Scanner;
public class SumNumbers {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner scan = new Scanner(System.in);
int sum = 0;
while(true){
System.out.println("Enter integer:");
int n = scan.nextInt();
if(n == -1){
break;
}
sum = sum + n;
}
System.out.println("The sum is "+sum);
}
}
Output:
Enter integer:
1
Enter integer:
2
Enter integer:
3
Enter integer:
4
Enter integer:
5
Enter integer:
6

2. Enter integer:
7
Enter integer:
8
Enter integer:
9
Enter integer:
-1
The sum is 45
Solution
SumNumbers.java
import java.util.Scanner;
public class SumNumbers {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner scan = new Scanner(System.in);
int sum = 0;
while(true){
System.out.println("Enter integer:");
int n = scan.nextInt();
if(n == -1){
break;
}
sum = sum + n;
}
System.out.println("The sum is "+sum);
}
}
Output:
Enter integer:

3. 1
Enter integer:
2
Enter integer:
3
Enter integer:
4
Enter integer:
5
Enter integer:
6
Enter integer:
7
Enter integer:
8
Enter integer:
9
Enter integer:
-1
The sum is 45