import java.io.*; class Token { public String readFile(String s){//读取文件 String data = null; String ss=""; try{ BufferedReader br = new BufferedReader (new InputStreamReader(new FileInputStream(s))); while((data = br.readLine())!=null){ //System.out.println(data); ss=ss+data+"\r\n"; } //System.out.println(ss); br.close();
}catch(Exception e){ e.printStackTrace();
}
return ss;
}
public void writeFile(String s){//读取文件 try{ OutputStreamWriter osw = new OutputStreamWriter (new FileOutputStream("2.txt")); osw.write(s,0,s.length()); osw.flush(); osw.close();
}catch(Exception e){ e.printStackTrace();
}
}
public static void main(String[] args){ Token tk=new Token(); tk.writeFile(tk.readFile("1.txt"));
}
}
try{ //先把内容读取到data BufferedReader br = new BufferedReader (new InputStreamReader(new FileInputStream(s))); while((data = br.readLine())!=null){ //System.out.println(data); ss=ss+data+"\r\n"; } //System.out.println(ss); br.close();
}catch(Exception e){ e.printStackTrace();
} try{ //把data写到dest.txt文件中 OutputStreamWriter osw = new OutputStreamWriter (new FileOutputStream("dest.txt")); osw.write(data,0,data.length()); osw.flush(); osw.close();
}catch(Exception e){ e.printStackTrace();
}
For Texe file:
public static void copyFile(String oFileName, String tFileName, boolean addLF) throws IOException{ File of = new File(oFileName); if(of.exists()){ BufferedReader reader = new BufferedReader(new InputStreamReader( new FileInputStream(of))); String line = reader.readLine();
File tf = new File(tFileName); if(of.exists()){ tf.delete(); } tf.createNewFile(); BufferedWriter writer = new BufferedWriter(new OutputStreamWriter( new FileOutputStream(tf))); while (line != null) { writer.write(line); if(addLF){ writer.write(0x0d); writer.write(0x0a); } line = reader.readLine(); } reader.close(); writer.close(); System.out.println(oFileName + " has been copyed to " + tFileName); } else { System.out.println(oFileName + " file not exist!"); } }
FileInputStream fis = new FileInputStream(oldFile); FileOutputStream fos = new FileOutputStream(newFile,false); byte[] by = new byte[1024]; int flag = fis.read(by); while(flag != -1){ fos.write(by); flag = fis.read(by); } fos.flush();
FileInputStream fis = new FileInputStream(oldFile); FileOutputStream fos = new FileOutputStream(newFile,false); byte[] by = new byte[1024]; int flag = fis.read(by); while(flag != -1){ fos.write(by,0,flag); flag = fis.read(by); } fos.flush();
class Token {
public String readFile(String s){//读取文件
String data = null;
String ss="";
try{
BufferedReader br = new BufferedReader
(new InputStreamReader(new FileInputStream(s)));
while((data = br.readLine())!=null){
//System.out.println(data);
ss=ss+data+"\r\n";
}
//System.out.println(ss);
br.close();
}catch(Exception e){
e.printStackTrace();
}
return ss;
}
public void writeFile(String s){//读取文件
try{
OutputStreamWriter osw =
new OutputStreamWriter
(new FileOutputStream("2.txt"));
osw.write(s,0,s.length());
osw.flush();
osw.close();
}catch(Exception e){
e.printStackTrace();
}
}
public static void main(String[] args){
Token tk=new Token();
tk.writeFile(tk.readFile("1.txt"));
}
}
BufferedReader br = new BufferedReader
(new InputStreamReader(new FileInputStream(s)));
while((data = br.readLine())!=null){
//System.out.println(data);
ss=ss+data+"\r\n";
}
//System.out.println(ss);
br.close();
}catch(Exception e){
e.printStackTrace();
}
try{ //把data写到dest.txt文件中
OutputStreamWriter osw =
new OutputStreamWriter
(new FileOutputStream("dest.txt"));
osw.write(data,0,data.length());
osw.flush();
osw.close();
}catch(Exception e){
e.printStackTrace();
}
public static void copyFile(String oFileName, String tFileName, boolean addLF) throws IOException{
File of = new File(oFileName);
if(of.exists()){
BufferedReader reader = new BufferedReader(new InputStreamReader(
new FileInputStream(of)));
String line = reader.readLine();
File tf = new File(tFileName);
if(of.exists()){
tf.delete();
}
tf.createNewFile();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
new FileOutputStream(tf)));
while (line != null) {
writer.write(line);
if(addLF){
writer.write(0x0d);
writer.write(0x0a);
}
line = reader.readLine();
}
reader.close();
writer.close();
System.out.println(oFileName + " has been copyed to " + tFileName);
}
else {
System.out.println(oFileName + " file not exist!");
}
}
* oldFilePath 原文件地址
* newFilePath 新文件地址
* 以上两个地址必须是存在的
**/
private void writeNewFile(String oldFilePath, String newFilePath) throws
Exception {
File oldFile = new File(oldFilePath);
File newFile = new File(newFilePath);
FileInputStream fis = new FileInputStream(oldFile);
FileOutputStream fos = new FileOutputStream(newFile,false); byte[] by = new byte[1024];
int flag = fis.read(by);
while(flag != -1){
fos.write(by);
flag = fis.read(by);
}
fos.flush();
fos.close();
fis.close();
}
public static boolean copyFile2(String spath, String tpath)
{
if (spath == null || spath.trim().length() == 0 || tpath == null || tpath.trim().length() == 0)
return false;
try
{
File sfile = new File(spath);
String filename = sfile.getName(); File tfile = new File(tpath, filename); RandomAccessFile rdtfile = new RandomAccessFile(tfile, "rw"); RandomAccessFile rdsfile = new RandomAccessFile(sfile, "r");
byte[] contents = new byte[(int) rdsfile.length()];
rdsfile.read(contents);
rdsfile.close(); rdtfile.write(contents);
rdtfile.close();
return true;
} catch (Exception e)
{
System.out.println("Copy file error:" + e.toString());
return false;
}
}
/**
* oldFilePath 原文件地址
* newFilePath 新文件地址
* 以上两个地址必须是存在的
**/
private void writeNewFile(String oldFilePath, String newFilePath) throws
Exception {
File oldFile = new File(oldFilePath);
File newFile = new File(newFilePath);
FileInputStream fis = new FileInputStream(oldFile);
FileOutputStream fos = new FileOutputStream(newFile,false);
byte[] by = new byte[1024];
int flag = fis.read(by);
while(flag != -1){
fos.write(by,0,flag);
flag = fis.read(by);
}
fos.flush();
fos.close();
fis.close();
}