that is likely not what was intended, as it shows a separate messagebox for each element of the array
better would be something like

Java Syntax (Toggle Plain Text)

StringBuilder builder = new StringBuilder(p.length);
for (int i=0;i<p.length;builder.append(p[i++])) builder.append("\n");
JOptionPane.showMessageDialog(null, builder.toString(), "Printing results", JOptionPane.INFORMATION_MESSAGE);

StringBuilder builder = new StringBuilder(p.length); for (int i=0;i<p.length;builder.append(p[i++])) builder.append("\n"); JOptionPane.showMessageDialog(null, builder.toString(), "Printing results", JOptionPane.INFORMATION_MESSAGE);

this will put each element of the array onto its own line.

When using Java versions lower than 1.5 use StringBuffer instead of StringBuilder.