Reading in only half the file

Question

Using this code I am only reading in Half the file:
BufferedReader in = new BufferedReader(new FileReader(inputArg));
while(in.readLine() != null) {
String record = in.readLine().toLowerCase().trim();
c2 ++;
System.out.println(c2 + record);
But when I use this code I get everything:
FileInputStream fstream = new FileInputStream(inputArg);
DataInputStream in = new DataInputStream(
new FileInputStream(inputArg));
while (in.available() != 0) {
String record = in.readLine().toLowerCase().trim();
c2 ++;
System.out.println(c2 + record);
I would like to use the top code because I was told to stop using the DataInputStream class.Hopefully someone can let me know what I am doing wrong up top.
          

Answer 1

Your code is only reading every other line.
while(in.readLine() != null) { //here you read a line and check it is not null
String record = in.readLine().toLowerCase().trim(); //here you read the next line and process itWhat you need to do is read the line only once. Therefore, read the first line before the loop into a string, and reference that string in the loop. e.g.
String line = in.readLine();
while (line != null) {
  // do stuff with 'line'
  // at the END of the loop, read the next line ready for the next stage of the loop
  line = in.readLine();