JTextArea, setPreferredSize, setSize, setMinimumSize, setMaximumSize - nothing works?

Question

I have a JTextArea and it's currently just displayed as a thin line, I can't get it to resize, it won't do anything. It's just too small and won't adjust no matter what properties I change. Can anyone suggest a solution?

private JTextArea outputT;

I adjust the properties:

    outputT = new JTextArea(5, 20);
    outputT.setMargin(new Insets(5, 5, 5, 5));
    outputT.setEditable(false);
    outputT.setPreferredSize(new Dimension(550, 50));

Answer 1

I have a JTextArea and it's currently just displayed as a thin line,

is required

• put JTextArea to JScrollPane

• set intial size for JTextArea(int, int) accepted by LayoutManager (and JFrame.pack())

• use proper LayoutManager in the case that you want to set Min/Max/PreferredSize for (JTextArea placed in) JScrollPane