java 文件格式批量修改及复制功能

package com.main.ui;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class Main {

	private static int lineY = 50;
	private static int startY = 30;
	private static int HEIGHT = 30;
	private static JTextArea ta;
	private static JComboBox intbox;
	private static JComboBox outbox;
	static List<String> fileList = new ArrayList<String>();
	/**
	 * @param args
	 */
	public static void main(String[] args) {

		final JFrame f = new JFrame("File");
		f.setSize(500, 500);
		f.setLocation(580, 240);
		f.setLayout(null);

		// 文件地址

		JLabel fileName = new JLabel("文件地址：");
		fileName.setBounds(50, startY, 70, HEIGHT);
		f.add(fileName);

		// 输入框
		final JTextField tfName = new JTextField("请输入地址");
		// tfName.setPreferredSize(new Dimension(150, 30));
		tfName.setBounds(120, startY, 180, HEIGHT);
		f.add(tfName);

		// 选择按钮
		JButton btnSelect = new JButton("选择地址");
		btnSelect.setBounds(300, startY, 100, HEIGHT);
		f.add(btnSelect);

		lineY += startY;
		// 下拉框出现的条目
		JLabel findLabel = new JLabel("查找类型：");
		findLabel.setBounds(50, lineY, 80, HEIGHT);
		f.add(findLabel);

		final String[] heros = new String[] { ".xml",".txt", ".java", ".kt", ".c",".sh",".mk"};

		intbox = new JComboBox(heros);
		intbox.setBounds(130, lineY, 80, HEIGHT);
		intbox.setSelectedIndex(0);
		f.add(intbox);

		JLabel changeLabel = new JLabel("转为类型：");
		changeLabel.setBounds(210, lineY, 80, HEIGHT);
		f.add(changeLabel);

		outbox = new JComboBox(heros);
		outbox.setBounds(290, lineY, 80, HEIGHT);
		outbox.setSelectedIndex(0);
		f.add(outbox);
		lineY += startY ;
		final JCheckBox checkBox = new JCheckBox("选择此项，转化后删除源文件");
		checkBox.setBounds(50, lineY, 200, HEIGHT);
		checkBox.setSelected(false);
		f.add(checkBox);
		
		lineY += (startY + HEIGHT);

		JButton btnFind = new JButton("查找");
		btnFind.setBounds(50, lineY, 80, HEIGHT);
		f.add(btnFind);

		JButton btnChange = new JButton("转换");
		btnChange.setBounds(200, lineY, 80, HEIGHT);
		f.add(btnChange);

		lineY += startY + HEIGHT;
		ta = new JTextArea();
		ta.setBounds(50, lineY, 350, 250);
		ta.setText("文件名");
		// 设置自动换行
		ta.setLineWrap(true);
		ta.setWrapStyleWord(true);  
		
		JScrollPane scroll = new JScrollPane(ta); 
		//把定义的JTextArea放到JScrollPane里面去 
		scroll.setBounds(50, lineY, 350, 250);
		//分别设置水平和垂直滚动条自动出现 
		//scroll.setHorizontalScrollBarPolicy( 
		//JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); 
		scroll.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED); 
		
		
		f.add(scroll);

		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		f.setVisible(true);

		// 文件选择
		final JFileChooser fc = new JFileChooser();
		fc.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
		//文件夹查找事件
		btnSelect.addActionListener(new ActionListener() {

			public void actionPerformed(java.awt.event.ActionEvent e) {

				fc.showDialog(new JLabel(), "选择");
				File file = fc.getSelectedFile();
				if (file.isDirectory()) {
					tfName.setText(file.getAbsolutePath());
					System.out.println("文件夹:" + file.getAbsolutePath());
				}
				// System.out.println(fc.getSelectedFile().getName());

			}
		});
		
		//文件选择事件
		btnFind.addActionListener(new ActionListener() {
			
			public void actionPerformed(ActionEvent e) {
	
				System.out.println("文件夹:" + tfName.getText()+","+heros[intbox.getSelectedIndex()]);
				if(IsFileDirExists(tfName.getText())){
					showDialog(f, "地址为空或地址格式不正确。");
					return;
				}
				fileList.clear();
				getFileSearcHelper(tfName.getText(),heros[intbox.getSelectedIndex()],fileList);
				System.out.print("123456789");
				
			}
		});
		
		//转化选择事件
		btnChange.addActionListener(new ActionListener() {
			
			public void actionPerformed(ActionEvent e) {
			
				if(outbox.getSelectedIndex() == intbox.getSelectedIndex()){
					showDialog(f,"格式相同，无法转化");
					return ;
				}
				new Thread() {
					
					public void run() {
						if(fileList!=null &&fileList.size()>0){
							for (int i = 0; i < fileList.size(); i++) {
								String path = fileList.get(i);
								if(IsFileExists(path)){
									copyFile(path, heros[intbox.getSelectedIndex()], heros[outbox.getSelectedIndex()],checkBox.isSelected());
								}
							}
						}else{
							showDialog(f, "查找此格式的文件不存在");
						}
					}
				}.start();				
			}
		});
	}

	private static List<String> getFileSearcHelper(String path, final String s2, final List<String> list) {
		File f = new File(path);
		File[] temp = f.listFiles();
		if (temp.length != 0) {
			final File[] str = f.listFiles(new FilenameFilter() {
				public boolean accept(File f, String mys) {
					if (new File(f, mys).isDirectory()) {
						getFileSearcHelper(new File(f, mys).getAbsolutePath(), s2, list);
						return false;
					} else if (new File(f, mys).isFile()) {
						return mys.endsWith(s2);
					}
					return false;
				}
			});
			if (ta != null) {
				ta.setText("");
				new Thread(){
					public void run() {
						for (final File myFlie : str) {
							ta.append(myFlie.getAbsolutePath() + "\n");
							System.out.println( myFlie.getAbsolutePath());
							list.add(myFlie.getAbsolutePath());
						}	
					};
				}.start();
				
			}
		}
		return list;
	}
	
	 // 判断文件是否存在
    private static boolean  IsFileExists(String path) {
    	File file = new File(path);
        if (file.exists()&&!file.isDirectory()) {
        	return true;
         } 
           
        return false;
    }
    
    // 判断文件是否存在
    private static boolean  IsFileDirExists(String path) {
    	File file = new File(path);
        if (file.exists()&& file.isDirectory()) {
        	return false;
         } 
           
        return true;
    }
    
    private static void copyFile(String path,String str1,String str2,boolean bool){  
        FileWriter fw = null; 
        FileReader fr = null; 
        boolean boolea = true;
        try {  
        	String newPath =  path.replace(str1, str2);
        	System.out.println("newPath="+newPath);
        	File file = new File(newPath);
        	file.createNewFile();
            //先创建目的地文件  
            fw = new FileWriter(file);
            fr= new FileReader(path);  
              
            char [] reader = new char[1024];  
            int num = 0;  
            while ((num = fr.read(reader)) !=-1) {  
                fw.write(reader,0,num);  
            }  
        } catch (IOException e) {  
        	boolea = false;
        	System.out.println(path);
            throw new RuntimeException("读写错误");  
        }finally{  
            if (fw !=null) {  
                try {  
                    fw.close(); //这里使用try-catch是因为防止创建失败（路径错误之类），当创建失败的时候这里就会出现NullPointerException  
                } catch (Exception e2) {  
                }  
            }  
            if (fr !=null) {  
                try {  
                    fr.close(); //同上  
                } catch (Exception e2) {  
                }  
            } 
            if(bool&& boolea){
            	File file = new File(path);
            	file.delete();
            }
            
        }  
          
    }  
    
    private static void showDialog(JFrame f, String str){
    	JOptionPane.showMessageDialog(f, str);
    }
    

}

未作失败测试，但失败的文件一直存在。可以再次检查。有不足之处，请回复。