我正在编写一个从一个文件读取输入的程序,然后程序将合成数据并将其写入另一个文件。
输入文件:
Christopher kardaras,10 N Brainard,Naperville,IL,60566 George 华盛顿,30 W Jackson,芝加哥,IL,60060
输出文件:
Christopher kardaras 10 N Brainard Naperville,IL 60566
George Washington 30 W Jackson Chicago,IL 60060
当我运行代码输出未显示在输出文件中时,以下是我的代码。
//open input, output files
FileReader freader = new FileReader("AddressData.txt");
BufferedReader inFile = new BufferedReader(freader);
FileWriter fwriter=new FileWriter("FormattedData.text");
PrintWriter outFile= new PrintWriter (fwriter);
//process data - get a line, separate into fields, then print
//address label to the output file
line= inFile.readLine();
while (line != null)
{
//Create a new scanner, use comma as field separator
Scanner s = new Scanner(line).useDelimiter(",");
// SOME CODE OMITTED HERE FOR BREVITY
out.printf(...);
//get the next line. read failure (EOF) will exit the loop
line = inFile.readLine();
}
//clean up
inFile.close();
outFile.close();
答案 0 :(得分:1)
在关闭之前尝试flushing outFile。
outFile.flush();
您还可以使用alternative PrintWriter constructor来处理这件事:
public PrintWriter(OutputStream out, boolean autoFlush)