FileEditor

package JBJADV003;

import java.io.*;

class FileEditor {
public static void main(String args[]) throws IOException {
/*如果时间富裕，可修改文件名由控制台输入 */
File f = new File("c:\\myDoc\\test.txt");
if (f.exists() && f.isFile()) {
System.out.println("文件已存在。覆盖内容");
}
else {
System.out.println("文件不存在。新建一个文件");
}
try {
BufferedReader i = new BufferedReader(new InputStreamReader(System.in));
String line;
DataOutputStream o = new DataOutputStream(new FileOutputStream("c:\\myDoc\\test.txt"));
System.out.println("请输入文本内容，入 end 结束输入：");
System.out.println("=============================");
while ( (line = i.readLine()) != null) {
if (line.equals("end")) {
break;
}
else {
String z = (line);
o.writeBytes(z + "\r\n");
}
}
o.close();
BufferedReader d = new BufferedReader(new FileReader("c:\\myDoc\\test.txt"));
System.out.println("\n输出文件内容： " );

System.out.println("=============================");
while ( (line = d.readLine()) != null) {
System.out.println(line);
}
d.close();
}
catch (IOException e) {
System.out.println("出现错误");
}
}
}