Swing Layout

JPanel jPanel1 = new JPanel();
jPanel1.setPreferredSize(new Dimension(640,440));
jPanel1.setBorder(BorderFactory.createEtchedBorder());

or parent container 設定 layout manager
JPanel tableContentsPanel = new JPanel(new BorderLayout());
tableContentsPanel.setBorder(BorderFactory.createTitledBorder(res.getString("Backup_Contents")));
JScrollPane tableContentsScrollPane = new JScrollPane();
tableContentsScrollPane.setBorder(BorderFactory.createEtchedBorder());
tableContentsScrollPane.getViewport().add(table);
tableContentsPanel.add(tableContentsScrollPane);
jPanel1.add(destinationPanel, BorderLayout.NORTH);
jPanel1.add(tableContentsPanel, BorderLayout.CENTER);