Java实现简单文本文件复制

import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;public class TextFileCopy {public static void main(String[] args) {FileReader reader = null;FileWriter writer = null;try {// 创建文件输入输出流reader = new FileReader("F:\\电子文档\\各种JDBC连接.txt");writer = new FileWriter("F:\\test.txt");int flag = 0;// 从输入流读取内容使用输出流输出while ((flag = reader.read()) != -1) {writer.write(flag);}System.out.println("复制文本成功");} catch (Exception e) {e.printStackTrace();} finally {if (reader != null) {try {reader.close(); // 关闭文件输入流} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}if (writer != null) {try {writer.close();// 关闭文件输出流} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}}