How to modify the contents of file?

When we went to replace the specific information in the file. This method will help.

public void modifyFile(String filePath, String textToFind,String textToReplace) {
PrintWriter outputStream = null;
try {
File tmpFile = new File(filePath);
String newText = readAndReplace(tmpFile, textToFind, textToReplace);
outputStream = new PrintWriter(new FileWriter(tmpFile));
outputStream.print(newText);
outputStream.flush();
} catch (IOException ioe) {
// handle exception here
} catch (Exception ioe) {
// handle exception here
} finally {
if (outputStream != null) {
outputStream.close();
}
}

}

private String readAndReplace(File file, String textToFind,String textToReplace) throws Exception {
StringBuffer sb = new StringBuffer();
BufferedReader inputStream = null;
try {
inputStream = new BufferedReader(new FileReader(file));
String line = "";
while ((line = inputStream.readLine()) != null) {
if (line.contains(textToFind)) {
line = line.replace(textToFind, textToReplace);
}
sb.append(line);
}
} catch (IOException ioe) {
// handle exception
} finally {
try {
inputStream.close();
} catch (IOException e) {
}
inputStream = null;
}

return sb.toString();
}