高手帮忙啊,编制一个程序,对两个已经存在的文件实现复制功能。 编制一个程序,对两个已经存在的文件实现复制功能编制一个程序,完成多名学生的成绩输入。初学者,请高手指点 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 package myjava;import java.io.*;public class CopyFile{ public static void main(String[] args) { Copy("/b.txt","/a.txt"); } public static void Copy(String from_name,String to_name) { File from_file=new File("/b.txt"); File to_file=new File("/a.txt"); if(!from_file.exists()) System.out.println("the from_file do not exists!"); if(!from_file.isFile()) System.out.println("from_file is not a file!"); if(!from_file.canRead()) System.out.println("the from_file can not read!"); if(!to_file.isDirectory()) to_file=new File(to_file,from_file.getName()); if(to_file.exists()) { if(!to_file.canWrite()) { try { System.out.println("the file is unwriteable!"); System.out.println("Overwrite existing file"+to_file.getName()+"?(Y/N):"); System.out.flush(); BufferedReader in=new BufferedReader(new InputStreamReader(System.in)); String response=in.readLine(); if(!response.equals("Y")&&!response.equals("y")) System.out.println("existsing file was not overwrten"); } catch(IOException e1) { System.out.println(e1.getMessage()); } } } else { String parent=to_file.getParent(); if(parent==null) parent=System.getProperty("user.dir"); File dir=new File(parent); if(!dir.exists()) System.out.println("the file do not exists"+parent); if(!dir.isFile()) System.out.println("dir is not a file"+parent); if(!dir.canWrite()) System.out.println("dir is unwriteable!"+parent); } FileInputStream from=null; FileOutputStream to=null; try { from=new FileInputStream(from_file); to=new FileOutputStream(to_name); byte[] buffer=new byte[4096]; int bytes_read; while((bytes_read=from.read(buffer))!=-1)to.write(buffer,0,bytes_read); } catch(Exception e2) { System.out.println(e2.getMessage()); } finally { if(from!=null) try { from.close(); } catch(IOException err) { System.out.println(err.getMessage()); } if(to!=null) { try { to.close(); } catch(IOException err1) { System.out.println(err1.getMessage()); } } } }}复制的,不知道是不是你要的!! package myjava;import java.io.*;public class CopyFile{ public static void main(String[] args) { Copy("/b.txt","/a.txt"); } public static void Copy(String from_name,String to_name) { File from_file=new File("/b.txt"); File to_file=new File("/a.txt"); if(!from_file.exists()) System.out.println("the from_file do not exists!"); if(!from_file.isFile()) System.out.println("from_file is not a file!"); if(!from_file.canRead()) System.out.println("the from_file can not read!"); if(!to_file.isDirectory()) to_file=new File(to_file,from_file.getName()); if(to_file.exists()) { if(!to_file.canWrite()) { try { System.out.println("the file is unwriteable!"); } catch(Exception e1) { System.out.println(e1.getMessage()); } } } FileInputStream from=null; FileOutputStream to=null; try { from=new FileInputStream(from_file); to=new FileOutputStream(to_name); byte[] buffer=new byte[4096]; int bytes_read; while((bytes_read=from.read(buffer))!=-1)to.write(buffer,0,bytes_read); } catch(Exception e2) { System.out.println(e2.getMessage()); } finally { if(from!=null) try { from.close(); } catch(IOException err) { System.out.println(err.getMessage()); } if(to!=null) { try { to.close(); } catch(IOException err1) { System.out.println(err1.getMessage()); } } } }}把b.txt文件中的内容复制到a.txt,删了很多,易于理解点! lz说是文件拷贝,可是如果不是txt文件,ls这样的方法能正常使用吗 import java.io.BufferedReader;import java.io.File;import java.io.FileOutputStream;import java.io.FileReader;import java.io.OutputStream;public class FileCopy { /** * @param args * @throws Exception */ public static void fileCopy(String file_path,File file) throws Exception{ FileReader f = new FileReader(file_path); BufferedReader buff = new BufferedReader(f); String data; OutputStream out = new FileOutputStream(file); while((data = buff.readLine()) != null){ byte[] b = data.getBytes(); out.write(b, 0, b.length); out.flush(); } out.close(); } public static void main(String[] args) throws Exception { FileCopy.fileCopy("d:/resume.xml", new File("d:/as.doc")); }} 使用Spring框架的文件拷贝实例package com.weity.Spring.test.Sample;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileReader;import java.io.OutputStream;import org.springframework.core.io.ClassPathResource;import org.springframework.core.io.Resource;import org.springframework.util.FileCopyUtils;public class FileCopyUtilsExample { public static void main(String[] args) throws Throwable { Resource res = new ClassPathResource("file1.txt"); byte[] fileData = FileCopyUtils.copyToByteArray(res.getFile()); String fileStr = FileCopyUtils.copyToString(new FileReader(res.getFile())); FileCopyUtils.copy(res.getFile(), new File(res.getFile().getParent()+ "/file2.txt")); OutputStream os = new ByteArrayOutputStream(); FileCopyUtils.copy(res.getInputStream(), os); }} 文件复制调用系统的copy函数阿,不是更简单 package com.util;import java.io.*;public class DealFile { /** 输入文件 */ String infile = ""; /** 输出文件 */ String outfile = ""; /** 输入文件流 */ FileInputStream fis = null; /** 输出文件流 */ FileOutputStream fos = null; public DealFile() { } /** * 建立输入文件流, 通过参数中指定的文件路径 fis = new FileInputStream(infile); */ public void connFIS(String i) { try { infile = i; fis = new FileInputStream(infile); } catch (IOException ioe) { System.out.println("调用DealFile.connFIS()函数错误:\r\n" + ioe); } } /** * 建立输出文件流,通过参数中指定的文件路径 fis = new FileInputStream(outfile); */ public void connFOS(String o) { try { outfile = o; fos = new FileOutputStream(outfile); } catch (IOException ioe) { System.out.println("调用DealFile.connFOS()函数错误:\r\n" + ioe); } } /** * 关闭输入文件流 */ public void closeFIS() { try { if (fis != null) { fis.close(); } } catch (IOException ioe) { System.out.println("调用DealFile.closeFIS()函数错误:\r\n" + ioe); } } /** * 关闭输出文件流 */ public void closeFOS() { try { if (fos != null) { fos.close(); } } catch (IOException ioe) { System.out.println("调用DealFile.closeFOS()函数错误:\r\n" + ioe); } } /** * 取得输入流 */ public FileInputStream getFIS() { return fis; } /** * 取得输出流 */ public FileOutputStream getFOS() { return fos; } /** * 删除文件, df是指字的文件名 */ public void deleteFile(String df) { File file = new File(df); file.delete(); } /** * 拷贝文件内容fis->fos */ public void movefile_FileStream() { try { File f = new File(infile); byte b[] = new byte[(int) (f.length())]; fis.read(b); fos.write(b); } catch (IOException ioe) { System.out.println("调用DealFile.movefile_FileStream()函数错误:\r\n" + ioe); } } /** * 拷贝文件内容fis->fos */ public void movefile_BufferedByteStream() { try { BufferedInputStream in = new BufferedInputStream(fis); BufferedOutputStream out = new BufferedOutputStream(fos); int c; while ((c = in.read()) != -1) { out.write(c); } in.close(); out.close(); } catch (IOException ioe) { System.out .println("调用DealFile.movefile_BufferedByteStream()函数错误:\r\n" + ioe); } } /** * 拷贝文件内容infile->outfile */ public void movefile_BufferedCharStream() { try { BufferedReader in = new BufferedReader(new FileReader(infile)); BufferedWriter out = new BufferedWriter(new FileWriter(outfile)); int c; while ((c = in.read()) != -1) { out.write(c); } in.close(); out.close(); } catch (IOException ioe) { System.out .println("调用DealFile.movefile_BufferedCharStream()函数错误:\r\n" + ioe); } } /** * 读中文字符串infile-> */ public String readCHStr() { return readCHStr(fis); } /** * 读中文字符串infile-> */ public String readCHStr(InputStream is) { String str = ""; try { // 建立Unicode字符流 InputStreamReader isw = new InputStreamReader(is); BufferedReader br = new BufferedReader(isw); // 读Unicode字符串 String s = ""; while ((s = br.readLine()) != null) { if (!str.equals("")) { str = str + "\r\n" + s; } else { str = str + s; } } br.close(); isw.close(); } catch (IOException ioe) { System.out.println("调用DealFile.readCHStr()函数错误:\r\n" + ioe); } return str; } /** * 将字符串转换为数据流 */ public FileInputStream toInputStream(String str) { FileInputStream fis_t = null; try { // 将字符串写入临时文件,再从文件生成数据流 FileOutputStream fos_t = new FileOutputStream("tmp.txt"); writeCHStr(fos_t, str); fis_t = new FileInputStream("tmp.txt"); } catch (IOException ioe) { System.out.println("调用DealFile.toInputStream()函数错误:\r\n" + ioe); } return fis_t; } /** * 写中文字符串到文件->outfile */ public void writeCHStr(String str) { writeCHStr(fos, str); } /** * 写中文字符串到文件->outfile */ public void writeCHStr(OutputStream os, String str) { try { // 建立Unicode字符流 OutputStreamWriter osw = new OutputStreamWriter(os); BufferedWriter bw = new BufferedWriter(osw); // 写Unicode字符串 bw.write(str, 0, str.length()); bw.newLine(); bw.close(); osw.close(); } catch (IOException ioe) { System.out.println("调用DealFile.writeCHStr()函数错误:\r\n" + ioe); } } /** * 追加到文件结尾 */ public void appendCHStr(String outfile, String str) { try { RandomAccessFile rf = new RandomAccessFile(outfile, "rw"); rf.seek(rf.length()); rf.writeBytes(str); rf.close(); } catch (IOException ioe) { System.out.println("调用DealFile.appendCHStr()函数错误:\r\n" + ioe); } } /** * 从位置cur开始检索第一个str的位置 */ public long seekStrPos(long cur, String str) { long fcur = cur; try { RandomAccessFile file = new RandomAccessFile(new File(infile), "r"); long flen = file.length(); int slen = str.length(); byte b[] = new byte[slen]; for (; fcur < flen; fcur++) { file.seek(fcur); // 文件尾剩余长度不再够时 if ((flen - fcur) < slen) { fcur = -1; break; } // 判断当前位置读取的字符串是否与参数字符串匹配,不是则继续搜索 file.read(b, 0, slen); String bstr = new String(b); if (str.equals(bstr)) { break; } } file.close(); } catch (IOException ioe) { System.out.println("调用DealFile.seekStrPos()函数错误:\r\n" + ioe); } return fcur; } /** * 在文件中定位某一个字符串在文件中的位置(左起) */ public long seekStrPos(String str) { return seekStrPos(0, str); } /** * 在文件中定位从字符串str1开始, 第一个字符串str2的位置 */ public long seekStrPos(String str1, String str2) { long cur = seekStrPos(0, str1); return seekStrPos(cur, str2); } /** * 从文件的pos位置开始, 取长度为len的字符串 */ public String substring(long pos, int len) { String str = ""; try { RandomAccessFile file = new RandomAccessFile(new File(infile), "r"); long flen = file.length(); // 当不能返回时返回空值 if (pos < 0 || (flen - pos) < len) { return ""; } file.seek(pos); byte b[] = new byte[len]; file.read(b, 0, len); str = new String(b); file.close(); } catch (IOException ioe) { System.out.println("调用DealFile.substring()函数错误:\r\n" + ioe); } return str; } /** * 从字符串str1开始 , 检索str2后, 长度为len的字符串 */ public String substring(String str1, String str2, int len) { long pos = seekStrPos(str1, str2); return substring(pos + str2.length(), len).trim(); } public static void main(String args[]) throws IOException, ArrayIndexOutOfBoundsException { DealFile df = new DealFile(); // *追加文件方法(一旦作为输出文件被打开,即被清空) df.connFIS("out.txt"); String str = df.readCHStr() + "测试追加WWWWWWWWTTTTW我的还"; df.connFOS("out.txt"); df.writeCHStr(str); df.closeFIS(); df.closeFOS(); // 拷贝文件 df.connFIS("out.txt"); df.connFOS("in.txt"); df.movefile_FileStream(); df.movefile_BufferedByteStream(); df.movefile_BufferedCharStream(); df.closeFIS(); df.closeFOS(); df.connFIS("out.txt"); System.out.println(df.substring("flyline", "background-color:", 7) .toUpperCase()); df.closeFIS(); }} 有点凌乱,求高手点拨 【求助:Java】我是新手我纠结:简单的多线程,却出错! java GUI 设计中,会不会有不同的类对同一个问题进行不同限制或设置?这些不同的设置会不会引起冲突? 关于在WEBSPHERE上发布的读取XML文件的问题 跪求大虾 这俩条语退出语句有什么不同~ 请指点!Thank~ 如何判断一个字符串里是否含有一个字符 那里下载BDK(国内的)? 在GUI中,如何遍歷一個窗體中的所有物件 笨问题----已知今天日期,怎样得到明天日期? map的保存问题? 关于applet 的问题。
import java.io.*;
public class CopyFile
{
public static void main(String[] args)
{
Copy("/b.txt","/a.txt");
}
public static void Copy(String from_name,String to_name)
{
File from_file=new File("/b.txt");
File to_file=new File("/a.txt");
if(!from_file.exists())
System.out.println("the from_file do not exists!");
if(!from_file.isFile())
System.out.println("from_file is not a file!");
if(!from_file.canRead())
System.out.println("the from_file can not read!");
if(!to_file.isDirectory())
to_file=new File(to_file,from_file.getName());
if(to_file.exists())
{
if(!to_file.canWrite())
{
try
{
System.out.println("the file is unwriteable!");
System.out.println("Overwrite existing file"+to_file.getName()+"?(Y/N):");
System.out.flush();
BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
String response=in.readLine();
if(!response.equals("Y")&&!response.equals("y"))
System.out.println("existsing file was not overwrten");
}
catch(IOException e1)
{
System.out.println(e1.getMessage());
}
}
}
else
{
String parent=to_file.getParent();
if(parent==null)
parent=System.getProperty("user.dir");
File dir=new File(parent);
if(!dir.exists())
System.out.println("the file do not exists"+parent);
if(!dir.isFile())
System.out.println("dir is not a file"+parent);
if(!dir.canWrite())
System.out.println("dir is unwriteable!"+parent);
}
FileInputStream from=null;
FileOutputStream to=null;
try
{
from=new FileInputStream(from_file);
to=new FileOutputStream(to_name);
byte[] buffer=new byte[4096];
int bytes_read;
while((bytes_read=from.read(buffer))!=-1)to.write(buffer,0,bytes_read);
}
catch(Exception e2)
{
System.out.println(e2.getMessage());
}
finally
{
if(from!=null)
try
{
from.close();
}
catch(IOException err)
{
System.out.println(err.getMessage());
}
if(to!=null)
{
try
{
to.close();
}
catch(IOException err1)
{
System.out.println(err1.getMessage());
}
}
}
}
}复制的,不知道是不是你要的!!
import java.io.*;
public class CopyFile
{
public static void main(String[] args)
{
Copy("/b.txt","/a.txt");
}
public static void Copy(String from_name,String to_name)
{
File from_file=new File("/b.txt");
File to_file=new File("/a.txt");
if(!from_file.exists())
System.out.println("the from_file do not exists!");
if(!from_file.isFile())
System.out.println("from_file is not a file!");
if(!from_file.canRead())
System.out.println("the from_file can not read!");
if(!to_file.isDirectory())
to_file=new File(to_file,from_file.getName());
if(to_file.exists())
{
if(!to_file.canWrite())
{
try
{
System.out.println("the file is unwriteable!");
}
catch(Exception e1)
{
System.out.println(e1.getMessage());
}
}
}
FileInputStream from=null;
FileOutputStream to=null;
try
{
from=new FileInputStream(from_file);
to=new FileOutputStream(to_name);
byte[] buffer=new byte[4096];
int bytes_read;
while((bytes_read=from.read(buffer))!=-1)to.write(buffer,0,bytes_read);
}
catch(Exception e2)
{
System.out.println(e2.getMessage());
}
finally
{
if(from!=null)
try
{
from.close();
}
catch(IOException err)
{
System.out.println(err.getMessage());
}
if(to!=null)
{
try
{
to.close();
}
catch(IOException err1)
{
System.out.println(err1.getMessage());
}
}
}
}
}
把b.txt文件中的内容复制到a.txt,删了很多,易于理解点!
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.OutputStream;public class FileCopy { /**
* @param args
* @throws Exception
*/
public static void fileCopy(String file_path,File file) throws Exception{
FileReader f = new FileReader(file_path);
BufferedReader buff = new BufferedReader(f);
String data;
OutputStream out = new FileOutputStream(file);
while((data = buff.readLine()) != null){
byte[] b = data.getBytes();
out.write(b, 0, b.length);
out.flush();
}
out.close();
}
public static void main(String[] args) throws Exception {
FileCopy.fileCopy("d:/resume.xml", new File("d:/as.doc"));
}}
import java.io.File;
import java.io.FileReader;
import java.io.OutputStream;import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.util.FileCopyUtils;public class FileCopyUtilsExample { public static void main(String[] args) throws Throwable {
Resource res = new ClassPathResource("file1.txt"); byte[] fileData = FileCopyUtils.copyToByteArray(res.getFile()); String fileStr = FileCopyUtils.copyToString(new FileReader(res.getFile())); FileCopyUtils.copy(res.getFile(),
new File(res.getFile().getParent()+ "/file2.txt"));
OutputStream os = new ByteArrayOutputStream();
FileCopyUtils.copy(res.getInputStream(), os);
}}
/** 输入文件 */
String infile = ""; /** 输出文件 */
String outfile = ""; /** 输入文件流 */
FileInputStream fis = null; /** 输出文件流 */
FileOutputStream fos = null; public DealFile() {
} /**
* 建立输入文件流, 通过参数中指定的文件路径 fis = new FileInputStream(infile);
*/
public void connFIS(String i) {
try {
infile = i;
fis = new FileInputStream(infile);
} catch (IOException ioe) {
System.out.println("调用DealFile.connFIS()函数错误:\r\n" + ioe);
}
} /**
* 建立输出文件流,通过参数中指定的文件路径 fis = new FileInputStream(outfile);
*/
public void connFOS(String o) {
try {
outfile = o;
fos = new FileOutputStream(outfile);
} catch (IOException ioe) {
System.out.println("调用DealFile.connFOS()函数错误:\r\n" + ioe);
}
} /**
* 关闭输入文件流
*/
public void closeFIS() {
try {
if (fis != null) {
fis.close();
}
} catch (IOException ioe) {
System.out.println("调用DealFile.closeFIS()函数错误:\r\n" + ioe);
}
} /**
* 关闭输出文件流
*/
public void closeFOS() {
try {
if (fos != null) {
fos.close();
}
} catch (IOException ioe) {
System.out.println("调用DealFile.closeFOS()函数错误:\r\n" + ioe);
}
} /**
* 取得输入流
*/
public FileInputStream getFIS() {
return fis;
} /**
* 取得输出流
*/
public FileOutputStream getFOS() {
return fos;
} /**
* 删除文件, df是指字的文件名
*/
public void deleteFile(String df) {
File file = new File(df);
file.delete();
} /**
* 拷贝文件内容fis->fos
*/
public void movefile_FileStream() {
try {
File f = new File(infile);
byte b[] = new byte[(int) (f.length())];
fis.read(b);
fos.write(b);
} catch (IOException ioe) {
System.out.println("调用DealFile.movefile_FileStream()函数错误:\r\n"
+ ioe);
}
} /**
* 拷贝文件内容fis->fos
*/
public void movefile_BufferedByteStream() {
try {
BufferedInputStream in = new BufferedInputStream(fis);
BufferedOutputStream out = new BufferedOutputStream(fos);
int c;
while ((c = in.read()) != -1) {
out.write(c);
}
in.close();
out.close();
} catch (IOException ioe) {
System.out
.println("调用DealFile.movefile_BufferedByteStream()函数错误:\r\n"
+ ioe);
}
} /**
* 拷贝文件内容infile->outfile
*/
public void movefile_BufferedCharStream() {
try {
BufferedReader in = new BufferedReader(new FileReader(infile));
BufferedWriter out = new BufferedWriter(new FileWriter(outfile));
int c;
while ((c = in.read()) != -1) {
out.write(c);
}
in.close();
out.close();
} catch (IOException ioe) {
System.out
.println("调用DealFile.movefile_BufferedCharStream()函数错误:\r\n"
+ ioe);
}
} /**
* 读中文字符串infile->
*/
public String readCHStr() {
return readCHStr(fis);
} /**
* 读中文字符串infile->
*/
public String readCHStr(InputStream is) {
String str = "";
try {
// 建立Unicode字符流
InputStreamReader isw = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isw);
// 读Unicode字符串
String s = "";
while ((s = br.readLine()) != null) {
if (!str.equals("")) {
str = str + "\r\n" + s;
} else {
str = str + s;
}
}
br.close();
isw.close();
} catch (IOException ioe) {
System.out.println("调用DealFile.readCHStr()函数错误:\r\n" + ioe);
}
return str;
} /**
* 将字符串转换为数据流
*/
public FileInputStream toInputStream(String str) {
FileInputStream fis_t = null;
try {
// 将字符串写入临时文件,再从文件生成数据流
FileOutputStream fos_t = new FileOutputStream("tmp.txt");
writeCHStr(fos_t, str);
fis_t = new FileInputStream("tmp.txt");
} catch (IOException ioe) {
System.out.println("调用DealFile.toInputStream()函数错误:\r\n" + ioe);
}
return fis_t;
} /**
* 写中文字符串到文件->outfile
*/
public void writeCHStr(String str) {
writeCHStr(fos, str);
} /**
* 写中文字符串到文件->outfile
*/
public void writeCHStr(OutputStream os, String str) {
try {
// 建立Unicode字符流
OutputStreamWriter osw = new OutputStreamWriter(os);
BufferedWriter bw = new BufferedWriter(osw);
// 写Unicode字符串
bw.write(str, 0, str.length());
bw.newLine();
bw.close();
osw.close();
} catch (IOException ioe) {
System.out.println("调用DealFile.writeCHStr()函数错误:\r\n" + ioe);
}
} /**
* 追加到文件结尾
*/
public void appendCHStr(String outfile, String str) {
try {
RandomAccessFile rf = new RandomAccessFile(outfile, "rw");
rf.seek(rf.length());
rf.writeBytes(str);
rf.close();
} catch (IOException ioe) {
System.out.println("调用DealFile.appendCHStr()函数错误:\r\n" + ioe);
}
} /**
* 从位置cur开始检索第一个str的位置
*/
public long seekStrPos(long cur, String str) {
long fcur = cur;
try {
RandomAccessFile file = new RandomAccessFile(new File(infile), "r");
long flen = file.length();
int slen = str.length();
byte b[] = new byte[slen]; for (; fcur < flen; fcur++) {
file.seek(fcur);
// 文件尾剩余长度不再够时
if ((flen - fcur) < slen) {
fcur = -1;
break;
}
// 判断当前位置读取的字符串是否与参数字符串匹配,不是则继续搜索
file.read(b, 0, slen);
String bstr = new String(b);
if (str.equals(bstr)) {
break;
}
}
file.close();
} catch (IOException ioe) {
System.out.println("调用DealFile.seekStrPos()函数错误:\r\n" + ioe);
}
return fcur;
} /**
* 在文件中定位某一个字符串在文件中的位置(左起)
*/
public long seekStrPos(String str) {
return seekStrPos(0, str);
} /**
* 在文件中定位从字符串str1开始, 第一个字符串str2的位置
*/
public long seekStrPos(String str1, String str2) {
long cur = seekStrPos(0, str1);
return seekStrPos(cur, str2);
} /**
* 从文件的pos位置开始, 取长度为len的字符串
*/
public String substring(long pos, int len) {
String str = "";
try {
RandomAccessFile file = new RandomAccessFile(new File(infile), "r");
long flen = file.length();
// 当不能返回时返回空值
if (pos < 0 || (flen - pos) < len) {
return "";
}
file.seek(pos);
byte b[] = new byte[len];
file.read(b, 0, len);
str = new String(b);
file.close();
} catch (IOException ioe) {
System.out.println("调用DealFile.substring()函数错误:\r\n" + ioe);
}
return str;
} /**
* 从字符串str1开始 , 检索str2后, 长度为len的字符串
*/
public String substring(String str1, String str2, int len) {
long pos = seekStrPos(str1, str2);
return substring(pos + str2.length(), len).trim();
} public static void main(String args[]) throws IOException,
ArrayIndexOutOfBoundsException {
DealFile df = new DealFile();
// *追加文件方法(一旦作为输出文件被打开,即被清空)
df.connFIS("out.txt");
String str = df.readCHStr() + "测试追加WWWWWWWWTTTTW我的还"; df.connFOS("out.txt");
df.writeCHStr(str);
df.closeFIS();
df.closeFOS();
// 拷贝文件
df.connFIS("out.txt");
df.connFOS("in.txt");
df.movefile_FileStream();
df.movefile_BufferedByteStream();
df.movefile_BufferedCharStream();
df.closeFIS();
df.closeFOS();
df.connFIS("out.txt");
System.out.println(df.substring("flyline", "background-color:", 7)
.toUpperCase());
df.closeFIS();
}
}