我不能写东西给我自己制作的txtfile(I can't write stuff to my self

我不能写东西给我自己制作的txtfile(I can't write stuff to my self-made txtfile) java

我正在尝试将自己的txt写入特定目录中的文件。 test.mod文件已正确放置，但是当我打开文件时它是空的并且不包含任何文本。 我在这里想念的是什么？

public static void main(String[] args) { String pad = "C:\\Users\\Bernard\\Documents\\Paradox Interactive"; File bestand = new File(pad + "\\test.mod"); try { BufferedWriter pen = new BufferedWriter(new FileWriter(bestand)); pen.write("line1"); pen.write("line2"); }catch(IOException e){ } }

感谢您的时间

I am having my first go at trying to write my own txt to a a file ,in a specific directory. The test.mod file is correctly placed ,but when I open up the file it is empty and contains no text. What am I missing here?

public static void main(String[] args) { String pad = "C:\\Users\\Bernard\\Documents\\Paradox Interactive"; File bestand = new File(pad + "\\test.mod"); try { BufferedWriter pen = new BufferedWriter(new FileWriter(bestand)); pen.write("line1"); pen.write("line2"); }catch(IOException e){ } }

Thank you for your time

最满意答案

当您写入BufferedWriter您（可能）写入内存缓冲区，并且必须flush()写入以确保它们到达磁盘。 close()也会在任何合理的实现上隐式调用flush() ，但依赖它并不是一个好习惯：

public static void main(String[] args) { String pad = "C:\\Users\\Bernard\\Documents\\Paradox Interactive"; File bestand = new File(pad + "\\test.mod"); BufferedWriter pen = null; try { pen = new BufferedWriter(new FileWriter(bestand)); pen.write("line1"); pen.write("line2"); pen.flush(); }catch(IOException e){ // Probably should have some treatment here too } finally { if (pen != null) { pen.close(); } } }

When you write to a BufferedWriter you are (potentially) writing to an in-memory buffer, and you must flush() your writes to make sure they reach the disk. close() would also implicitly call flush() on any reasonable implementation, but it isn't considered a good practice to rely on it:

public static void main(String[] args) { String pad = "C:\\Users\\Bernard\\Documents\\Paradox Interactive"; File bestand = new File(pad + "\\test.mod"); BufferedWriter pen = null; try { pen = new BufferedWriter(new FileWriter(bestand)); pen.write("line1"); pen.write("line2"); pen.flush(); }catch(IOException e){ // Probably should have some treatment here too } finally { if (pen != null) { pen.close(); } } }