1、程序運行結果截圖：程序清單如下：public class Example10_16public static void main(String arts Win win = new Win(;class Win extends JFrame implements ActionListenerJTable table;Object a;Object name = "商品名稱","單價","銷售量","銷售額"JButton computerRows,computerColums;JTextField inputRow

2、sNumber;int initRows = 1;JPanel pSouth,pNorth;int count = 0,rowsNumber = 0;Win(computerRows = new JButton("每件商品銷售額"computerColums = new JButton("總銷售額"inputRowsNumber = new JTextField(10;computerRows.addActionListener(this;computerColums.addActionListener(this;inputRowsNumber.addA

3、ctionListener(this;pSouth = new JPanel(;pNorth = new JPanel(;pNorth.add(new JLabel("輸入表格行數，回車確認"pNorth.add(inputRowsNumber;pSouth.add(computerRows;pSouth.add(computerColums;add(pSouth,BorderLayout.SOUTH;add(pNorth,BorderLayout.NORTH;add(new JScrollPane(table,BorderLayout.CENTER;setBounds(1

4、00,100,370,250;setVisible(true;setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE;public void actionPerformed(ActionEvent eif(e.getSource( = inputRowsNumbercount = 0;initRows = Integer.parseInt(inputRowsNumber.getText(;a = new ObjectinitRows4;for(int i = 0;i < initRows;i+for(int j = 0;j < 4;j+aij =

5、 0;table = new JTable(a,name;table.setRowHeight(20;getContentPane(.removeAll(;add(new JScrollPane(table,BorderLayout.CENTER;add(pSouth,BorderLayout.SOUTH;add(pNorth,BorderLayout.NORTH;validate(;else if(e.getSource( = computerRowsint rows = table.getRowCount(; /獲取現有表格行數for(int i = 0;i < rows;i+dou

6、ble sum = 1;boolean boo = true;for(int j = 1;j <= 2;j+trysum = sum * Double.parseDouble(aij.toString(;catch(Exception eeboo = false;table.repaint(; /表格更新顯示if(boo = trueai3 = "" + sum; /修改數組中的數據table.repaint(;else if(e.getSource( = computerColumsif(count = 0rowsNumber = table.getRowCount

7、(; /獲取表格的目前的行數count+;elserowsNumber = table.getRowCount(; /獲取表格的目前的行數rowsNumber = rowsNumber - 1; /不要最后一行double totalSum = 0;for(int j = 0;j < rowsNumber;j+totalSum = totalSum + Double.parseDouble(aj3.toString(;Object b = new ObjectrowsNumber + 14; /比數組a多一行的數組for(int i = 0;i < rowsNumber;i+ /將數組a的數據復制到數組b中for(int j = 0;j < 4;j+bij = aij;browsNumber0 = "一共有" + rowsNumber + "件商品"browsNumber3 = "總銷售額" + totalSum;a = b; /重新初始化atable = new JTable(a,name;getContentPane(.remove