DoubleLong

package Console;

import java.io.IOException;

public class Console {

    public static void printPrompt(String prompt) {
    System.out.print(prompt+" ");
    System.out.flush();
    }
    public static String readLine() {
        int ch;
        boolean done = false;
        String r = "";
        while(!done) {
            try {
                ch = System.in.read();
                if((char) ch == '\n') done = true;
                else if (ch !='\r') r= r+(char)ch;
            }
            catch(IOException e) {
                done = true;
            }

        }
        return r;
    }

    public static String readLine(String prompt) {
        printPrompt(prompt);
        return readLine();
    }
    public static int readInt(String prompt) {
        while (true) {
            printPrompt(prompt);
            try {
                return Integer.parseInt(readLine().trim());
            }
            catch(NumberFormatException e) {
                System.out.println("Not an integer!");

            }
        }
    }

    public static long readLong(String prompt) {
        while (true) {
            printPrompt(prompt);
            try {
                return Long.parseLong(readLine().trim());
            }
            catch(NumberFormatException e) {
                System.out.println("Not a long!");

            }
        }
    }

    public static double readDouble(String prompt) {
        while (true) {
            printPrompt(prompt);
            try {
                return Double.parseDouble(readLine().trim());
            }
            catch(NumberFormatException e) {
                System.out.println("Not a double!");

            }
        }
    }
}