我正在编写一个程序来查找信息并将它们从文本文件中删除,方法是制作一个临时文件,删除原始文件,然后将临时文件重命名为原始文件。到目前为止,我已经完成了编写程序,并且当我使用 Windows 控制台编译它时它可以工作,但是当我尝试在 netbeans 中运行相同的代码时它不起作用,因为它无法删除和重命名原始文件。我正在寻找解决这个问题的方法。
这是代码,当我使用 Windows 控制台而不是在 netbeans 中编译它时它可以工作
import java.io.*;
public class rename {
public static String x="1123";
public void removeLineFromFile(String file, String lineToRemove) {
try {
File inFile = new File(file);
if (!inFile.isFile()) {
System.out.println("Parameter is not an existing file");
return;
}
//Construct the new file that will later be renamed to the original filename.
File tempFile = new File(inFile.getAbsolutePath() + "2.tmp");
BufferedReader br = new BufferedReader(new FileReader(file));
PrintWriter pw = new PrintWriter(new FileWriter(tempFile));
String line = null;
//Read from the original file and write to the new
//unless content matches data to be removed.
while ((line = br.readLine()) != null) {
if (!line.trim().contains(lineToRemove)) {
pw.println(line);
pw.flush();
}
}
pw.close();
br.close();
//Delete the original file
if (!inFile.delete()) {
System.out.println("Could not delete file");
return;
}
//Rename the new file to the filename the original file had.
if (!tempFile.renameTo(inFile))
System.out.println("Could not rename file");
}
catch (FileNotFoundException ex) {
ex.printStackTrace();
}
catch (IOException ex) {
ex.printStackTrace();
}
}
public static void main(String[] args) {
rename util = new rename();
String jj;
util.removeLineFromFile("File.txt", x);
}
}