I have a .txt file which has 3 lines
My GUI code is
txtpnEmergencyAmbulanceAnd = new JTextPane();
try {
// FileReader reads text files in the default encoding.
FileReader fileReader = new FileReader(fileNumbers);
// Always wrap FileReader in BufferedReader.
BufferedReader bufferedReader = new BufferedReader(fileReader);
while((lineNumbers = bufferedReader.readLine()) != null) {
txtpnEmergencyAmbulanceAnd.setText(lineNumbers);
}
// Always close files.
bufferedReader.close();
}
catch(FileNotFoundException ex) {
System.out.println(
"Unable to open file '" +
fileNumbers + "'");
}
catch(IOException ex) {
System.out.println(
"Error reading file '"
+ fileNumbers + "'");
}
However what prints into my GUI is only the last line. I'm trying to print out all three lines I have also included this as a global
String fileNumbers = "numbers.txt";
String lineNumbers = "";
setText
does exactly, sets the components text to the value you pass it, discarding any content it previously had.
Instead try using JTextPane#read(Reader, Object)
FYI: You might want to take a closer look at The try-with-resources Statement in order to manage your resources better
Yes, because you overwrite the contents of your JTextPane
on every run.
Quick and dirty solution:
txtpnEmergencyAmbulanceAnd.setText(txtpnEmergencyAmbulanceAnd.getText() + lineNumbers);
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.