| Author | Ian - Tutorial Posts = 62 |
| This tutorial will demonstrate how to read from the input console (console line) to answer the prompts. The prompts will need to be a integer value to add the two inputs together. I am using the InputStreamReader to convert the System.in (console) into a stream, which into converted with a BufferedReader to get the whole line and not just one character/number. The code --- // just import the BufferedReader and inputstream reader import java.io.BufferedReader; import java.io.InputStreamReader; class addtwonumbers { public static void main(String[] args) { // system.in reader (e.g. the input from the console) InputStreamReader ISR = new InputStreamReader(System.in); // buffer the console reader BufferedReader BR = new BufferedReader(ISR); // the default values for the two numbers int val1 = 0; int val2 = 0; try { // output the question. System.out.print("Enter first number : "); // read in the console intput one line (BR.readLine) and then convert to a integer val1 = Integer.parseInt(BR.readLine()); System.out.print("Enter second number : "); val2 = Integer.parseInt(BR.readLine()); } catch (Exception ex) { // if the input was a string. System.out.println(ex.toString()); } // output the answer of adding both of the values together System.out.println("Answer = " + (val1 + val2)); } } --- save that as addtwonumbers.java, because of course java is very picky about the class name to the java file, because Java creates a class of the same name as the class which in-turn is what the java virtual machine uses to execute. Once compiled (javac addtwonumbers.java) and executed (java addtwonumbers) the output will be Enter first number : 30 Enter second number : 23 Answer = 53 |
|
| Copyright@CodingFriends, 2005-2006. All Rights Reserved. | |
| Home | Forums | Tutorials | Users
RSS Feeds - Global
 - Tutorials - Forums - News
|
|
Users
Tutorials
Forum
Projects
Site
Search