我有一个JTable的以下代码。
import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.lang.*;
import java.awt.event.*;
///////////
import javax.swing.border.EmptyBorder;
import javax.swing.event.*;
import javax.swing.text.Document;
import javax.swing.table.TableRowSorter;
import java.util.List;
import java.util.ArrayList;
import java.util.Comparator;
///////////
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import static javax.swing.JFrame.EXIT_ON_CLOSE;
import javax.swing.table.*;
public class SelectTeam
{
JFrame myMainWindow = new JFrame("Select Team");
JPanel firstPanel = new JPanel(); //a panel for first tab
//first panel components
JScrollPane myScrollTable;
JTextField filterAthID;
JTextField filterForeName;
TableRowSorter sorter;
DefaultTableModel model;
JLabel AthleteID = new JLabel();
JLabel ForeName = new JLabel();
JTable athTable;
JComboBox bPartInEventCB;
int nextPosition=0;
public void runGUI()
{
myMainWindow.setBounds(10, 10, 1296, 756); //set position, then dimensions
myMainWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
myMainWindow.setLayout(new GridLayout(1,1));
createFirstPanel(); //call method to create each panel
myMainWindow.getContentPane().add(firstPanel); //adds the tabbedpane to mainWindow
myMainWindow.setVisible(true); //make the GUI appear
myMainWindow.setResizable(false);
}
public void createFirstPanel()
{
firstPanel.setLayout(null);
AthleteID.setLocation(200,120); //Sets the location
AthleteID.setSize(150,26); //Sets the size
AthleteID.setText("Athlete ID Search:");
firstPanel.add(AthleteID); //Adds it to the panel
ForeName.setLocation(731,120); //Sets the location
ForeName.setSize(150,26); //Sets the size
ForeName.setText("Athlete Name Search:");
firstPanel.add(ForeName); //Adds it to the panel
String[] aHeaders = {"Athlete ID","Forename","Surname","On The Team"};
String[][] sampleData = new String[10][4];
sampleData[0][0]= "JS98";
sampleData[0][1]= "John";
sampleData[0][2]= "Smith";
sampleData[0][3]= "Yes";
sampleData[1][0]= "DB83";
sampleData[1][2]= "David";
sampleData[1][2]= "Bowser";
sampleData[1][3]= "No";
sampleData[2][0]= "TR68";
sampleData[2][3]= "Trevor";
sampleData[2][2]= "Radner";
sampleData[2][3]= "No";
sampleData[3][0]= "JR97";
sampleData[3][4]= "Jon";
sampleData[3][2]= "Raynor";
sampleData[3][3]= "Yes";
sampleData[4][0]= "AF11";
sampleData[4][5]= "Adam";
sampleData[4][2]= "Fawcett";
sampleData[4][3]= "Yes";
sampleData[5][0]= "ES96";
sampleData[5][6]= "Emma";
sampleData[5][2]= "Spender";
sampleData[5][3]= "Yes";
sampleData[6][0]= "GF56";
sampleData[6][7]= "Gerald";
sampleData[6][2]= "Fits";
sampleData[6][3]= "No";
sampleData[7][0]= "NC70";
sampleData[7][8]= "Nicola";
sampleData[7][2]= "Condron";
sampleData[7][3]= "Yes";
sampleData[8][0]= "SI25";
sampleData[8][9]= "Sir";
sampleData[8][2]= "Ivan";
sampleData[8][3]= "Yes";
sampleData[9][0]= "LH56";
sampleData[9][10]= "Lord";
sampleData[9][2]= "Hammerlock";
sampleData[9][3]= "Yes";
model = new DefaultTableModel(sampleData,aHeaders)
{
@Override
public boolean isCellEditable(int row, int column)
{
if (column < 3)
{
return false;
}
else
{
return true;
}
}
};
athTable = new JTable(model);
athTable.setAutoCreateRowSorter(true);
athTable.setRowHeight(20);
myScrollTable = new JScrollPane(athTable);
myScrollTable.setSize(1082,600);
myScrollTable.setLocation(200,145);
System.out.println("Creating compare table");
TableColumn sportColumn = athTable.getColumnModel().getColumn(3);
bPartInEventCB = new JComboBox();
bPartInEventCB.addItem("Yes");
bPartInEventCB.addItem("No");
sportColumn.setCellEditor(new DefaultCellEditor(bPartInEventCB));
sorter = new TableRowSorter(athTable.getModel());
List sortKeys = new ArrayList();
sortKeys.add(new RowSorter.SortKey(3, SortOrder.DESCENDING));
sorter.setSortKeys(sortKeys);
athTable.setRowSorter(sorter);
filterAthID = new JTextField(10);
filterAthID.setSize(425,26);
filterAthID.setLocation(306,120);
filterAthID.setToolTipText("Enter Athlete ID");
firstPanel.add(filterAthID);
filterForeName = new JTextField(10);
filterForeName.setSize(425,26);
filterForeName.setLocation(857,120);
filterForeName.setToolTipText("Enter Athlete Name");
firstPanel.add(filterForeName);
Document doc = filterAthID.getDocument();
DocumentListener listener = new DocumentListener() {
@Override
public void insertUpdate(DocumentEvent e)
{
newFilter();
}
@Override
public void removeUpdate(DocumentEvent e)
{
newFilter();
}
@Override
public void changedUpdate(DocumentEvent e)
{
newFilter();
}
};
doc.addDocumentListener(listener);
Document docb = filterForeName.getDocument();
DocumentListener listenerb = new DocumentListener() {
@Override
public void insertUpdate(DocumentEvent e)
{
newFilter();
}
@Override
public void removeUpdate(DocumentEvent e)
{
newFilter();
}
@Override
public void changedUpdate(DocumentEvent e)
{
newFilter();
}
};
docb.addDocumentListener(listenerb);
for(int i=0;i<nextPosition;i++)
{
System.out.println(athTable.getModel().getValueAt(i,0));
}
firstPanel.add(myScrollTable);
}
private void newFilter()
{
RowFilter rf = null;
try
{
List<RowFilter<Object,Object>> filters = new ArrayList<RowFilter<Object,Object>>(2);
filters.add(RowFilter.regexFilter("(?i)"+filterAthID.getText(), 0));
filters.add(RowFilter.regexFilter("(?i)"+filterForeName.getText(), 1));
rf = RowFilter.andFilter(filters);
List<RowFilter<Object,Object>> filtersb = new ArrayList<RowFilter<Object,Object>>(2);
filtersb.add(RowFilter.regexFilter("(?i)"+filterForeName.getText(), 1));
filtersb.add(RowFilter.regexFilter("(?i)"+filterForeName.getText(), 2));
rf = RowFilter.orFilter(filtersb);
}
catch (java.util.regex.PatternSyntaxException e)
{
return;
}
sorter.setRowFilter(rf);
}
public static void main(String[] args)
{
SelectTeam st = new SelectTeam();
st.runGUI();
}
}
它创建一个看起来像这样的表。
我希望能够做到这一点，如果最后一列中的“是”的值超过8个，则会弹出一个弹出窗口。
JOptionPane.showMessageDialog(null, "Please remove a athlete from the team");我唯一的问题是我无法执行此操作，因为我不知道如何操作。我将不胜感激。谢谢
编辑
所以我添加了以下代码
JButton btnUpdate = new JButton();
btnUpdate.setLocation(0,120);
btnUpdate.setSize(200,50);
btnUpdate.setText("Update the team");
btnUpdate.addActionListener(this);
firstPanel.add(btnUpdate);
public void checkCount(TableModel model)
{
int count=0;
for (int row=0; row<model.getRowCount(); row++)
{
if ("Yes".equals(model.getValueAt(row, 3)))
{
count++;
}
}
if (count>8)
{
JOptionPane.showMessageDialog(null, "Please remove a athlete from the team");
}
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource() == btnUpdate)
{
checkCount();
}
}
但是，当我编译这个我得到这个错误
那么我将通过什么论点来使这项工作呢？
最佳答案
遍历TableModel并计算最后一列中的yes值。之后，将计数器与8进行比较，并在必要时显示该消息。
像这样（未经测试）
public void checkCount(TableModel model) {
int count=0;
for (int row=0; row<model.getRowCount(); row++) {
if ("Yes".equals(model.getValueAt(row, 3)) {
count++;
}
}
if (count>8) {
JOptionPane.showMessageDialog(null, "Please remove a athlete from the team");
}
}