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93 lines
3.3 KiB
93 lines
3.3 KiB
import javax.swing.*;
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import java.awt.*;
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import java.awt.event.*;
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import java.io.*;
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import java.util.*;
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import javax.swing.table.*;
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import java.math.*;
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public class test02 implements ActionListener{
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File file;
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FileReader fileReader;
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JFileChooser fileChooser;
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JFrame frame;
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JButton button;
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JButton b;
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DefaultTableModel tableModel;
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JTable table;
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JScrollPane scrollPane;
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public test02() {
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frame=new JFrame("read");
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tableModel=new DefaultTableModel();
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table=new JTable(tableModel);
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scrollPane=new JScrollPane(table);
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frame.add(scrollPane,BorderLayout.CENTER);
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b = new JButton("加工资");
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button=new JButton("选择文本文件");
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frame.add(button,BorderLayout.SOUTH);
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frame.add(b,BorderLayout.EAST);
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frame.setSize(400, 200);
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frame.setVisible(true);
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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button.addActionListener(this);
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b.addActionListener(this);
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}
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public void actionPerformed(ActionEvent event) {
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if(event.getSource()==button) {
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fileChooser=new JFileChooser("D:\\java库\\salary.txt");
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if(fileChooser.showOpenDialog(frame)==JFileChooser.APPROVE_OPTION) {
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file=fileChooser.getSelectedFile();
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try {
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fileReader=new FileReader(file);
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Vector<String> vector=new Vector<String>();
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vector.add("姓名");
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vector.add("工资");
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vector.add("津贴");
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Vector<Vector<String>> dataVector=new Vector<Vector<String>>();
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Vector<String> dataVector2=new Vector<String>();
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String string="";
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while(fileReader.ready()) {
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char ch=(char) fileReader.read();
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if(ch==' ') {
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dataVector2.add(string);
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string="";
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}
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else if(ch=='\n') {
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dataVector2.add(string);
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string="";
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dataVector.add(dataVector2);
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dataVector2=new Vector<String>();
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}
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else {
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string=string+ch;
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}
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}
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tableModel.setDataVector(dataVector, vector);
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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}catch (Exception e) {
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e.printStackTrace();
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}
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}
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}
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if(event.getSource()==b){
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for(int i=0;i<table.getRowCount();i++) {
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Object s = table.getValueAt(i, 1);
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double m = Double.parseDouble(s.toString());
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m *= 1.10;
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BigDecimal bg = new BigDecimal(m);
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double f1 = bg.setScale(2, RoundingMode.HALF_UP).doubleValue();
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table.setValueAt(Double.toString(f1), i, 1);
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}
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}
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}
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public static void main(String args[]) {
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new test02();
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}
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} |