Clever Geek Handbook

Swing dialog displays long string differently on Mac and Windows

I need to have a long descriptive dialog in a part of my program, and it displays differently on Mac and Windows. On a mac file, the word seems to wrap the text and break it into 3 or 4 lines, but on a PC it just creates a very long dialog. Here is the code that shows my problems:

public class Test extends JFrame{

import javax.swing.JFrame;
import javax.swing.JOptionPane;
public class Test extends JFrame{
private String suggestion = "eee eee eeee eeee eeeerr rrrrr rrrrrrrr rrrrrr " +
        "rrrrrr rrrrrrrrr  rrrrrr rrrrr tttttt ttttttttttt ttttt tttttttttt ttt" +
        " tttt tttttt ttttttttttt reroew uewurkpe jwrkl;ejr kejk ejrk;jewr;jeklr " +
        "jk jre;wlj;ewjr;ej lejrlkejlkejlkjerl  ejlrj kleklr jekl jlek " +
        "rjklejrklejrklekl ";
public void showDialog()
{
           JOptionPane.showMessageDialog(this,
                                  suggestion,
                                  "title",
                                  JOptionPane.INFORMATION_MESSAGE,
                                  null);
}
public static void main(String [] args)
{
    Test test = new Test();
    test.showDialog();
}
}

when i run this on windows it just created one huge line of text in a long dialog, but on mac it generates multiple lines with appropriately sized dialom.

+2


source to share


2 answers


The JOptionPane component has a read-only property (MaxCharactersPerLineCount) for the maximum number of characters per line. By default, this is Integer.MAX_VALUE. By subclassing JOptionPane, you can override this parameter. Changing this setting allows the component to wrap words when the message is really long.



http://java.sun.com/developer/JDCTechTips/2004/tt0122.html

+4


source


If you'd rather control word wrapping yourself, pass an array of strings to showMessageDialog. Each line will be displayed on a separate line. It works on any platform.



 private String s1 = "eee eee eeee eeee eeeerr rrrrr rrrrrrrr rrrrrr";
 private String s2 = "rrrrrr rrrrrrrrr  rrrrrr rrrrr tttttt ttttttttttt ttttt tttttttttt ttt";
 private String s3 = "tttt tttttt ttttttttttt reroew uewurkpe jwrkl;ejr kejk ejrk;jewr;jeklr";
 private String s4 = "rjklejrklejrklekl";
 private String s5 = "eee eee eeee eeee eeeerr rrrrr rrrrrrrr rrrrrr";
 private String[] suggestion = new String[] {s1, s2, s3, s4, s5};
 public void showDialog()
{
       JOptionPane.showMessageDialog(this,
                              suggestion,
                              "title",
                              JOptionPane.INFORMATION_MESSAGE,
                              null);
}
+1


source






More articles:


All Articles