JList显示String []文本被截断

Question

I'm trying to populate a JList with items from an ArrayList<String[]> . Each String[] is of the form ["I","am","an","example"] and there's nothing I can do about the input form - its from a third party. What I'd like is simply a JList with each String[] expanded out on a different line. When I use the following code, though, the first few characters are cut off the left side of the JList - its cutting off mid character so its an issue with pixels not characters.

The class below is set as the content pane on a JFrame elsewhere in the program, I didn't think it was necessary to copy that over here but if it would be useful then I can trim it down and put it up for viewing.

public class BookScreen extends JPanel{
ListSelectionModel lsm;
ArrayList <String> atList;
JList atBox;
MainForm mf;

public BookScreen (MainForm mf){
    //I'm aware this bit is clunky, it was a quick and dirty to test it displays 
    //properly before I cleaned it up
    ArrayList<String[]> books= mf.getWorld().getBooks();
    atList=new ArrayList();
    for (String[] s:books){
        atList.add(Arrays.toString(s));
    }
    //end clunky
    atBox = new JList(atList.toArray());
    lsm = atBox.getSelectionModel();
    lsm.addListSelectionListener(new BookScreen.AtListSelectionHandler());
    atBox.setVisibleRowCount(-1);
    atBox.setLayoutOrientation(JList.HORIZONTAL_WRAP);
    atBox.setLocation(0, 0);
    atBox.setVisible(true);
    this.add(atBox);
    this.setVisible(true);
}
class AtListSelectionHandler implements ListSelectionListener{
    @Override
    public void valueChanged(ListSelectionEvent e){
    }
}
}

Screenshot of problem:

Answer 1

The problem is that you don't set a layout manager on the panel, which means that the default FlowLayout will be used. If there's only one component this layout places it centered on the container; if the component is wider than the container its edges are trimmed.

To solve the problem simply set a different layout manager, for example BorderLayout :

this.setLayout(new BorderLayout());
this.add(atBox);

More information: Creating a GUI With JFC/Swing: Using layout managers .