How to make JOptionPane.MessageDialog appear with a vertical bar when it calls for a constructor from a java class?

**tangara** · March 4th, 2013, 06:50 AM

Hi,

I have a mini java swing program where by it has 3 separate classes.

- application.java
- question.java
- test.java

Now, the application.java is the main application that will invoke the result.

At the test.java, there's a constructor method as follows:

public String getResult() {
 
        int score = 0;
        String[] choices;
        String score = "";
        for (int i = 0; i < test.length; i++) {
            if (test[i].getCorrect() == test[i].getAns()) {
                score++;
            } else {
                score += "Question " + (i + 1) + " is " + test[i].getCorrect() + "\n";
 
        }
        return result;

Question.java is mainly the getter and setter.

At the Test.java,

there's a line which I'd like a vertical bar to appear in this JOptionPane there.

JOptionPane.showMessageDialog(null, newTest.getResult()).

Can anybody tell me how to go about doing it?

I have read up so much but yet is totally confused.
One of the examples mentioned that you have to create a JTextArea like below.

p2 = new JPanel();
	 p2.add(jtxtDetails = new JTextArea("abc").

But, what I want to achieve is really get the newTest.getResult into the JTextArea.

Am really bad about Java programming hence hope someone can shows me how to achieve it.

Many thanks.

**Norm** · March 4th, 2013, 08:13 AM

get the newTest.getResult into the JTextArea.

Use one of the JTextArea class's methods to put the String returned by the getResult() method into the text area.

I'd like a vertical bar to appear in this JOptionPane

Can you explain what you mean by a "vertical bar"? Is it this character: "|"?

**tangara** · March 4th, 2013, 10:43 AM

Originally Posted by Norm

Use one of the JTextArea class's methods to put the String returned by the getResult() method into the text area.

Pardon my stupidity, after my futile attempt...it's not working...

I tried to put these lines at my getResult() method at Test.java.

JTextArea jta = new JTextArea(result);
JScrollPane scroller = new JScrollPane(jta);
scroller.setVerticalScrollBarPolicy(ScrollPaneCons tants.VERTICAL_SCROLLBAR_ALWAYS);

return result;
}

And then I add this code into the application.java :

JOptionPane.showMessageDialog(null, scroller(newTest.getResult())

But, it's not working.

Could you show me how to use one of the JTextArea class's methods to put the String returned by the getResult() method into the text area?

Can you explain what you mean by a "vertical bar"? Is it this character: "|"?

The "vertical bar" refers to the scrollbar that appears on the ShowMessageDialog "container" when the result gets very big.

However, now I don't think I can use ShowMessageDialog right since scroller(newTest.getResult()) is the new container.

I'm overall at a loss how to do the whole things.
Hope you can really show me how.

Thanks.

**Norm** · March 4th, 2013, 10:51 AM

how to do the whole things.

Sorry, I don't understand what your problem is.

it's not working.

Can you explain what you are having problems with?

It be better if you posted the code you are having problems with and add some comments to the code describing what you want the code to do.

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