import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.swing.table.*;
import java.math.*;

public class test02 implements ActionListener{
    File file;
    FileReader fileReader;
    JFileChooser fileChooser;
    JFrame frame;
    JButton button;
    JButton b;
    DefaultTableModel tableModel;
    JTable table;
    JScrollPane scrollPane;

    public test02() {
        frame=new JFrame("read");
        tableModel=new DefaultTableModel();
        table=new JTable(tableModel);
        scrollPane=new JScrollPane(table);
        frame.add(scrollPane,BorderLayout.CENTER);

        b = new JButton("加工资");
        button=new JButton("选择文本文件");
        frame.add(button,BorderLayout.SOUTH);
        frame.add(b,BorderLayout.EAST);

        frame.setSize(400, 200);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        button.addActionListener(this);
        b.addActionListener(this);
    }
    public void actionPerformed(ActionEvent event) {
        if(event.getSource()==button) {
            fileChooser=new JFileChooser("D:\\java库\\salary.txt");
            if(fileChooser.showOpenDialog(frame)==JFileChooser.APPROVE_OPTION) {
                file=fileChooser.getSelectedFile();
                try {
                    fileReader=new FileReader(file);
                    Vector<String> vector=new Vector<String>();
                    vector.add("姓名");
                    vector.add("工资");
                    vector.add("津贴");
                    Vector<Vector<String>> dataVector=new Vector<Vector<String>>();
                    Vector<String> dataVector2=new Vector<String>();
                    String string="";
                    while(fileReader.ready()) {
                        char ch=(char) fileReader.read();
                        if(ch==' ') {
                            dataVector2.add(string);
                            string="";
                        }
                        else if(ch=='\n') {
                            dataVector2.add(string);
                            string="";
                            dataVector.add(dataVector2);
                            dataVector2=new Vector<String>();
                        }
                        else {
                            string=string+ch;
                        }
                    }
                    tableModel.setDataVector(dataVector, vector);
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                }catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
        if(event.getSource()==b){
            for(int i=0;i<table.getRowCount();i++) {
                Object s = table.getValueAt(i, 1);
                double m = Double.parseDouble(s.toString());
                m *= 1.10;
                BigDecimal bg = new BigDecimal(m);
                double f1 = bg.setScale(2, RoundingMode.HALF_UP).doubleValue();
                table.setValueAt(Double.toString(f1), i, 1);
            }
        }
    }

    public static void main(String args[]) {
        new test02();
    }

}