Java WriteFile可以';我看不见内容
我想创建一个包含一些文本的简单文本文件Java WriteFile可以';我看不见内容,java,io,Java,Io,我想创建一个包含一些文本的简单文本文件 import java.io.*; class TextFileWriter{ public static void writeTextFile(String fileName, String s) { FileWriter output = null; try { output = new FileWriter(fileName); BufferedWriter writer = new BufferedWrit
import java.io.*;
class TextFileWriter{
public static void writeTextFile(String fileName, String s) {
FileWriter output = null;
try {
output = new FileWriter(fileName);
BufferedWriter writer = new BufferedWriter(output);
writer.write(s);
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
if (output != null) {
try {
output.close();
} catch (IOException e) {
}
}
}
}
public static void main(String args[]){
writeTextFile("myText.txt","some text");
}
}
当我运行这段代码时,我成功地创建了文本文件,但当我打开它时,我看不到内容(“一些文本”)。我做错了什么 您正在关闭底层的
FileWriter
,但实际数据仍存储(缓冲)在BufferedWriter
对象中。这就是您必须关闭的对象:
FileWriter output = new FileWriter(fileName);
BufferedWriter writer = new BufferedWriter(output);
writer.write(s);
writer.flush(); // Good practice but not required
writer.close();