Hi Everyone!
I have a problem with reading data from the txt file into the 2d array. In general, the above code is workable. The only thing that doesn't work is: userdata[row][j] = tokens[j]; The problem is that my array "userdata" gets values "null". However, if I replace this code with "System.out.println(tokens[j]);", then I can see the values from the file "UserDataFile.txt". What is wrong in my code?
public void readuserdatafromfile() throws IOException {
try{
FileInputStream fstream = new FileInputStream("src/filetree/UserDataFile.txt");
// Get the object of DataInputStream
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine = "";
String[] tokens = strLine.split("\\s");
//Read File Line By Line
int row = 0;
while ((strLine = br.readLine()) != null) {
// Copy the content into the array
tokens = strLine.split("\\s");
for(int j = 0; j < tokens.length; j++) {
userdata[row][j] = tokens[j];
}
row++;
}
//Close the input stream
in.close();
} catch (Exception e){//Catch exception if any
System.err.println("Error: " + e.getMessage());
}
for(int i = 0; i < userdata.length; i++) {
for(int j=0; j < userdata[i].length; j++)
System.out.println(userdata[i][j]);
}
}Thanks!
