/*
 * The MIT License
 *
 * Copyright 2013 Marcin Zarebski <zarebski.m[AT]gmail.com>.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package calculator;

import calculator.exception.ExpressionExecuteException;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.Charset;

public final class App {
    private App() {
    }

    public static void main(final String[] args) throws IOException {
        final Calculator calc = new Calculator();

        final BufferedReader reader = new BufferedReader(new InputStreamReader(System.in, Charset.forName("UTF-8")));
        String line = reader.readLine();

        while (!"exit".equalsIgnoreCase(line)) {
            try {
                calc.execute(line);
                System.out.println(calc.getResult());
                calc.clear();
            } catch (ExpressionExecuteException ex) {
                ex.printStackTrace();
            }
            line = reader.readLine();
        }
    }
}

@@ -1679,28 +1679,33 @@
 e = read
-er.readLine(
+Expression(reader
 );%0A%0A    
@@ -1823,26 +1823,19 @@
     
-System.out.println
+writeResult
 (cal
@@ -2000,24 +2000,203 @@
       line =
+ readExpression(reader);%0A        %7D%0A    %7D%0A%0A    private static String readExpression(final BufferedReader reader) throws IOException %7B%0A        System.out.print(%22%3E %22);%0A        return
  reader.read
@@ -2203,26 +2203,112 @@
 Line();%0A    
+%7D%0A%0A
     
-%7D
+private static void writeResult(double result) %7B%0A        System.out.println(result);
 %0A    %7D%0A%7D%0A

Correct demo application