我引用了很多方法。 即fireTableCellUpdated的有效方法。 但事实上我还是不申请。
如何让DETA值更新后表格内容也更新。
该方法我调用GJJ方法实现。 虽然更新了但是出现了很多新的窗口。 这不是我的需求。
告诉我如何在新窗口中添加按钮和监听按钮来执行更新行为 friend 告诉我怎么做。
class MyTable extends AbstractTableModel {
Object p[][]={
{DETA_1_1,DETA_1_2, DETA_1_3, DETA_1_4, DETA_1_5},
{DETA_2_1,DETA_2_2, DETA_2_3, DETA_2_4, DETA_2_5},
{DETA_3_1,DETA_3_2, DETA_3_3, DETA_3_4, DETA_3_5},
{DETA_4_1,DETA_4_2, DETA_4_3, DETA_4_4, DETA_4_5},
{DETA_5_1,DETA_5_2, DETA_5_3, DETA_5_4, DETA_5_5},
{DETA_6_1,DETA_6_2, DETA_6_3, DETA_6_4, DETA_6_5},
{DETA_7_1,DETA_7_2, DETA_7_3, DETA_7_4, DETA_7_5},
{DETA_8_1,DETA_8_2, DETA_8_3, DETA_8_4, DETA_8_5},
{DETA_9_1,DETA_9_2,DETA_9_3,DETA_9_4,DETA_9_5},
{DETA_10_1,DETA_10_2,DETA_10_3,DETA_10_4,DETA_10_5},
{DETA_11_1,DETA_11_2,DETA_11_3,DETA_11_4,DETA_11_5},
{DETA_12_1,DETA_12_2,DETA_12_3,DETA_12_4,DETA_12_5},
{DETA_1_3_1,DETA_1_3_2,DETA_1_3_3,DETA_1_3_4,DETA_1_3_5},
{DETA_1_4_1,DETA_1_4_2, DETA_1_4_3, DETA_1_4_4, DETA_1_4_5},
{DETA_15_1,DETA_15_2,DETA_15_3,DETA_15_4,DETA_15_5},
{DETA_16_1,DETA_16_2,DETA_16_3,DETA_16_4,DETA_16_5},
{DETA_17_1,DETA_17_2,DETA_17_3,DETA_17_4,DETA_17_5},
{DETA_1_8_1,DETA_1_8_2,DETA_1_8_3,DETA_1_8_4,DETA_1_8_5},
{DETA_19_1,DETA_19_2,DETA_19_3,DETA_19_4,DETA_19_5}
};
String[] n = { "NO","CARD","NAME","NAME2","time" };
public int getColumnCount() {
return n.length;
}
public int getRowCount() {
return p.length;
}
public String getColumnName(int col) {
return n[col];
}
public Object getValueAt(int row, int col) {
return p[row][col];
}
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
}
}
private void GJJ() {
JFrame f = new JFrame();
MyTable mt = new MyTable();
JTable t = new JTable(mt);
t.setPreferredScrollableViewportSize(new Dimension(550, 30));
JScrollPane s = new JScrollPane(t);
f.getContentPane().add(s, BorderLayout.CENTER);
f.setTitle("coolman");
f.pack();
f.setVisible(true);
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
}
最佳答案
你的问题有点模糊。 “更新”表模型可以是更新现有模型(即编辑数据)和/或添加新行。
我已经做了一个关于两者的简单示例。
编辑行时，模型和表将自行更新，因此您无需执行任何操作，但是，如果添加或删除行，您将负责自行触发更新事件。
public class TestTableModel {
public static void main(String[] args) {
new TestTableModel();
}
public TestTableModel() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
final MyTableModel tableModel = new MyTableModel();
final JTable table = new JTable(tableModel);
JButton addButton = new JButton("Add");
addButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
tableModel.add();
}
});
JButton updateButton = new JButton("Update");
updateButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
int row = table.getSelectedRow();
if (row > -1) {
table.setValueAt("Banana", row, 0);
}
}
});
JPanel buttonPane = new JPanel();
buttonPane.add(addButton);
buttonPane.add(updateButton);
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new JScrollPane(table));
frame.add(buttonPane, BorderLayout.SOUTH);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class Person {
private String name;
private int age;
public Person() {
}
public Person(String name, int age) {
this.name = name;
this.age = age;
}
public int getAge() {
return age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public void setAge(int age) {
this.age = age;
}
}
public class MyTableModel extends AbstractTableModel {
private List<Person> lstPeople;
public MyTableModel() {
lstPeople = new ArrayList<Person>(25);
lstPeople.add(new Person("Darryl Garton", randomAge()));
lstPeople.add(new Person("Neil Willison", randomAge()));
lstPeople.add(new Person("Darryl Hege", randomAge()));
lstPeople.add(new Person("Karina Jerry", randomAge()));
lstPeople.add(new Person("Erik Leddy", randomAge()));
lstPeople.add(new Person("Chandra Kehrer", randomAge()));
lstPeople.add(new Person("Katy Sapien", randomAge()));
lstPeople.add(new Person("Lonnie Blakes", randomAge()));
lstPeople.add(new Person("Kelly Ruocco", randomAge()));
lstPeople.add(new Person("Fernando Mckinnie", randomAge()));
}
@Override
public boolean isCellEditable(int rowIndex, int columnIndex) {
return true;
}
protected int randomAge() {
return (int)Math.round(Math.random() * 99) + 1;
}
@Override
public int getRowCount() {
return lstPeople.size();
}
@Override
public int getColumnCount() {
return 2;
}
@Override
public String getColumnName(int column) {
String name = null;
switch (column) {
case 0:
name = "Name";
break;
case 1:
name = "Age";
break;
}
return name;
}
@Override
public Class<?> getColumnClass(int columnIndex) {
Class clazz = String.class;
switch (columnIndex) {
case 1:
clazz = Integer.class;
break;
}
return clazz;
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
Object value = null;
Person person = lstPeople.get(rowIndex);
switch (columnIndex) {
case 0:
value = person.getName();
break;
case 1:
value = person.getAge();
break;
}
return value;
}
@Override
public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
Person person = lstPeople.get(rowIndex);
switch (columnIndex) {
case 0:
if (aValue instanceof String) {
person.setName(aValue.toString());
}
break;
case 1:
if (aValue instanceof Integer) {
person.setAge((Integer)aValue);
}
break;
}
fireTableCellUpdated(rowIndex, columnIndex);
}
public void add() {
lstPeople.add(new Person());
fireTableRowsInserted(lstPeople.size() - 1, lstPeople.size() - 1);
}
}
}
您可能想通读How to use tables了解更多信息
关于java - 如何更新 AbstractTableModel，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13505690/