Please enter the first number>
10
Please enter the second number>
20
The sum from 10 to 20 is 165

package practice;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Check31 {

	public static void main(String[] args) {
		BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
		System.out.println("Please enter the first integer");
		String line;
		try {
			line = reader.readLine();
				int num1 = Integer.parseInt(line);

		System.out.println("Please enter a second integer");
		line = reader.readLine();
		int num2 = Integer.parseInt(line);
		int answer = calc(num1,num2);
		System.out.println(num1 + "From" + num2 + "The sum up to" + answer + "is");
		} catch (NumberFormatException e) {
			System.out.println("Please enter an integer");
		} catch (IOException e) {
			e.printStackTrace();
		}

	}

	private static int calc(int num1, int num2) {
		int sum = 0;
		for (int i = num1; i <= num2; i++) {
			sum = sum + i;
		}
		return sum;

	}

}

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