将JScrollPane滚动到JTable上的特定行

可能重复：
JTable滚动到指定的行索引

我有一个JTable，我在程序上需要使用以下代码选择一行：

myTable.setRowSelectionInterval(i, j); 

（其中i和j分别是有效的行号和列号）。

问题是，当你跳到一行时，JScrollPane不会移动。 在这种情况下，表格很长，并且通常在屏幕上看不到“选定行”，因此用户必须手动上/下滚动才能找到它。 我想知道如何让JScrollPane自动跳转到该行的特定位置。

编辑：找到这一个可以做到这一点的class轮：

 table.scrollRectToVisible(table.getCellRect(row,0, true)); 

Answer 1

只是通过@Eng.Fouad +1扩展post，没有像我期望的那样有效（在另一个Java Swing论坛上得到StanislavL的亲切帮助）

 import java.awt.*; import javax.swing.*; import javax.swing.event.*; import javax.swing.table.DefaultTableModel; public class TableSelectionGood implements ListSelectionListener { private JTable[] tables; private boolean ignore = false; public TableSelectionGood() { Object[][] data1 = new Object[100][5]; Object[][] data2 = new Object[50][5]; Object[][] data3 = new Object[50][5]; for (int i = 0; i < data1.length; i++) { data1[i][0] = "Company # " + (i + 1); for (int j = 1; j < data1[i].length; j++) { data1[i][j] = "" + (i + 1) + ", " + j; } } for (int i = 0; i < data2.length; i++) { data2[i][0] = "Company # " + ((i * 2) + 1); for (int j = 1; j < data2[i].length; j++) { data2[i][j] = "" + ((i * 2) + 1) + ", " + j; } } for (int i = 0; i < data3.length; i++) { data3[i][0] = "Company # " + (i * 2); for (int j = 1; j < data3[i].length; j++) { data3[i][j] = "" + (i * 2) + ", " + j; } } String[] headers = {"Col 1", "Col 2", "Col 3", "Col 4", "Col 5"}; DefaultTableModel model1 = new DefaultTableModel(data1, headers); DefaultTableModel model2 = new DefaultTableModel(data2, headers); DefaultTableModel model3 = new DefaultTableModel(data3, headers); final JTable jTable1 = new JTable(model1); jTable1.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); final JScrollPane sp1 = new JScrollPane(); sp1.setPreferredSize(new Dimension(600, 200)); sp1.setViewportView(jTable1); final JTable jTable2 = new JTable(model2); jTable2.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); final JScrollPane sp2 = new JScrollPane(); sp2.setPreferredSize(new Dimension(600, 200)); sp2.setViewportView(jTable2); final JTable jTable3 = new JTable(model3); jTable3.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); final JScrollPane sp3 = new JScrollPane(); sp3.setPreferredSize(new Dimension(600, 200)); sp3.setViewportView(jTable3); TableSelectionGood tableSelection = new TableSelectionGood(jTable1, jTable2, jTable3); JPanel panel1 = new JPanel(); panel1.setLayout(new GridLayout(3, 0, 10, 10)); panel1.add(sp1); panel1.add(sp2); panel1.add(sp3); JFrame frame = new JFrame("tableSelection"); frame.add(panel1); frame.pack(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } public TableSelectionGood(JTable... tables) { for (JTable table : tables) { table.getSelectionModel().addListSelectionListener(this); } this.tables = tables; } private JTable getTable(Object model) { for (JTable table : tables) { if (table.getSelectionModel() == model) { return table; } } return null; } private void changeSelection(JTable table, String rowKey) { int col = table.convertColumnIndexToView(0); for (int row = table.getRowCount(); --row >= 0;) { if (rowKey.equals(table.getValueAt(row, col))) { table.changeSelection(row, col, false, false); return; } } table.clearSelection(); } @Override public void valueChanged(ListSelectionEvent e) { if (e.getValueIsAdjusting() || ignore) { return; } ignore = true; try { JTable table = getTable(e.getSource()); int row = table.getSelectedRow(); String rowKey = table.getValueAt(row, table.convertColumnIndexToView(0)).toString(); for (JTable t : tables) { if (t == table) { continue; } changeSelection(t, rowKey); JViewport viewport = (JViewport) t.getParent(); Rectangle rect = t.getCellRect(t.getSelectedRow(), 0, true); Rectangle r2 = viewport.getVisibleRect(); t.scrollRectToVisible(new Rectangle(rect.x, rect.y, (int) r2.getWidth(), (int) r2.getHeight())); System.out.println(new Rectangle(viewport.getExtentSize()).contains(rect)); } } finally { ignore = false; } } public static void main(String[] args) { TableSelectionGood tableSelection = new TableSelectionGood(); } } 

Answer 2

我在我的旧项目中使用了这个：

 public static void scrollToVisible(JTable table, int rowIndex, int vColIndex) { if (!(table.getParent() instanceof JViewport)) return; JViewport viewport = (JViewport)table.getParent(); Rectangle rect = table.getCellRect(rowIndex, vColIndex, true); Point pt = viewport.getViewPosition(); rect.setLocation(rect.x-pt.x, rect.y-pt.y); viewport.scrollRectToVisible(rect); } 

参考： http ： //www.exampledepot.com/egs/javax.swing.table/Vis.html