的Java適當的I/O此代碼爲空值終止字符

Question

什麼是這個代碼Java相當於我已經把它的一部分，我很感興趣的I/O部分：

int fd = open(FILE_NAME, O_WRONLY); 
int ret = 0; 
if (fd == -1) {   
    exit(EXIT_FAILURE); 
} 
while (1) { 
    ret = write(fd, "\0", 1); 
} 

更新：
的代碼不會複製files.It只有在文件中寫入一個字節/字符（不知道）每X秒

Answer 1

這基本上就是你想要的。

try { 
    FileOutputStream os = new FileOutputStream(FILENAME); 
    while(true){ 
    os.write(0); 
    Thread.sleep(2000); // wait 2 seconds before the next write 
    } 
} 
catch(FileNotFoundException e){ 
    System.err.println("watchdog error: " + e.getMessage()) 
    System.exit(1); 
} 

如果你真的想忽略所有的「寫」錯誤，因爲你的C代碼沒有，那麼os.write更改爲：

try { 
    os.write(0); 
} 
catch(Exception we){ 
    //ignoring write exception 
} 

Answer 2

Filereader file = new Filereader("filename"); 
BufferedReader reader = new BufferedReader(); 
String line = ""; 

FileWriter fstream = new FileWriter("fName"); 
BufferedWriter fbw = new BufferedWriter(fstream); 

while ((line = reader.readLine()) != null) { 

    fbw.write(line + "\n"); 

} 

你的意思是這樣的（？）（？）？從一個文件讀取並寫入另一個文件。

Answer 3

public static void main(String[] args) throws IOException, InterruptedException { 
    //open the file (throws exception if failed) 
    FileOutputStream fstream = new FileOutputStream("fName"); 

    while (true) { 
     //write "\0" in the file (throws exception if failed) 
     fstream.write(0); 
     //sleep for 1000ms, throw exception if interrupted 
     Thread.sleep(1000); 
    } 
}