Last condition is not verifying.

Now i modified my code, but it's not giving the correct answer. For 2 and 6, i'm getting output sum = 60. public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); int a = reader.read(); int b = reader.read(); int sum = a + b; System.out.println("Sum = " + sum); } }

int a = reader.read();
int b = reader.read();

Here is the fault. You are reading characters and storing them as int. Program will compile because char can be widened and stored in an int without explicit casting. But it will not work as intended. Parse both the input as Integer and it will work correctly.

I don't mean to sound rude, but I guess you have not understood the concept clearly. 1. reader.read() only reads 1 character from your input. So, if you were to enter a two-digit number, it will not work. 2. reader.read() does not return an integer value. So, you have to explicitly convert the value into Integer. You were doing this in your previous code, but you removed it, probably because you didn't understand what's happening. 3. Display the values of a and b individually first to understand if the input matches these values.

Thanks for the clarification. Difference between read and readLINE was not clear.

read - Reads a single character. readline - Reads a line of text. A line is considered to be terminated by any one of a line feed ('\n'), a carriage return ('\r'), or a carriage return followed immediately by a linefeed.