Combo items

Posted on 2000-05-18
Medium Priority
Last Modified: 2010-08-05
How do I read in strings from a text file, one digit on each line and use the digit to choose Choices in Combo options(drop down menus) I think that say theres 6 choices in each one so 0 would indicate choose the first and so on .Any ideas ?
Thanks in advance
Question by:spunog
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2

Expert Comment

ID: 2821291
can you be more specific, please explain in more words...

Accepted Solution

shchuka earned 100 total points
ID: 2821303
Well, you can use BufferedReader to read the lines of text and then convert them into integers - something like this:

import java.io.*;

int chNum;

try {
    BufferedReader br = new BufferedReader(new FileReader(filename));
    chNum = Integer.valueOf(br.readLine()).intValue();
    // You can read the rest of the lines here beyond the first one
catch(IOException ex) {
    // errors with the file
catch(NumberFormatException ex) {
    // what you read is not a number

And then you simply do this:

Choice combobox = new Choice();

Hope, this helps,

Expert Comment

ID: 2821318
File fin = new File("Filename");
BufferedInputStream bIn = new BufferedInputStream(fsIn);
BufferdReader brIn = new BufferedReader(new InputStreamReader(bIn));

String str = new String();
str = brIn.readln();
int s = dd.intValue(str);


This is just a rough example, if you need more detail let me know


Expert Comment

ID: 2821321
opps, supposed to look like this:

String str = new String();
str = brIn.readln();
Long dd = new Long(str);
int s = dd.intValue();


Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
Introduction This article is the last of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers our test design approach and then goes through a simple test case example, how …
Video by: Michael
Viewers learn about how to reduce the potential repetitiveness of coding in main by developing methods to perform specific tasks for their program. Additionally, objects are introduced for the purpose of learning how to call methods in Java. Define …
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …
Suggested Courses
Course of the Month10 days, 17 hours left to enroll

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question