UC知道JAVA小程序,简单的加法计算!请求帮忙!
来源：百度知道 编辑：UC知道 时间：2024/05/15 05:11:33
程序里有个JTable表,有两列,我想让两列能进行计算!
在表里输入数字,然后点按钮进行加法计算!请高手帮忙写一下!
问题解决了给追分!谢谢了!
import java.awt.Dimension;
import java.awt.Rectangle;
import javax.swing.table.DefaultTableModel;
import javax.swing.*;
public class Creg extends JFrame {
DefaultTableModel tableModel = new DefaultTableModel();
private JTable table = new JTable(tableModel);
private JScrollPane jScrollPane1 = new JScrollPane();
private JButton jButton1 = new JButton();
public Creg() {
try {
jbInit();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
Creg creg = new Creg();
creg.setSize(500,400);
creg.setVisible(true);
creg.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
private void jbInit() throws Exception {
jScrollPane1.setBounds(new Rectangle(25, 80, 170, 225));
jButton1.setText("计算两数相加&
在表里输入数字,然后点按钮进行加法计算!请高手帮忙写一下!
问题解决了给追分!谢谢了!
import java.awt.Dimension;
import java.awt.Rectangle;
import javax.swing.table.DefaultTableModel;
import javax.swing.*;
public class Creg extends JFrame {
DefaultTableModel tableModel = new DefaultTableModel();
private JTable table = new JTable(tableModel);
private JScrollPane jScrollPane1 = new JScrollPane();
private JButton jButton1 = new JButton();
public Creg() {
try {
jbInit();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
Creg creg = new Creg();
creg.setSize(500,400);
creg.setVisible(true);
creg.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
private void jbInit() throws Exception {
jScrollPane1.setBounds(new Rectangle(25, 80, 170, 225));
jButton1.setText("计算两数相加&
其实代码就只缺 JButton 的事件监听器，及提取、转换并计算和的部分：
import java.awt.event.ActionEvent;
jButton1.addActionListener(new AbstractAction() {
public void actionPerformed(ActionEvent ae) {
try {
double sum = Double.valueOf(tableModel.getValueAt(0, 0).toString()) +
Double.valueOf(tableModel.getValueAt(0, 1).toString());
JOptionPane.showMessageDialog(Creg.this, "结果：" + sum );
} catch (NumberFormatException nfe) {
JOptionPane.showMes