readLine() Deprecated

[Nelson Nadal]

Is there no other way to read what the
DataOutputStream() created except by DataInputStream()?
My problem is how to read what
DataOutputStream.writeChars()
had made.
If I used readLine() of DataInputStream its deprecated...

[Veena Rani]

You can use readLine method of BufferedReader class for reading from the DataInputStream
Wrap the DataInputStream in the BufferedReader object by using this code
BufferedReader d = new BufferedReader(new InputStreamReader(in));
where 'in' is the object of DataInputStream.

[Nelson Nadal]

This is the code...

 
        DataInputStream in = new DataInputStream(new
 FileInputStream("invoice1.txt"));

        double price;
        int unit;
        String desc;
        double total = 0.0;
        try {
            while (true) {
                price = in.readDouble();
                in.readChar();       // throws out the tab
                unit = in.readInt();
                in.readChar();       // throws out the tab
                desc = in.readLine();
                System.out.println("You've ordered " +
    unit + " units of " +
    desc + " at $" + price);
  System.out.println(desc);
                total = total + unit * price;
            }
        } catch (EOFException e) {
        }
 

I changed to this...

 
        DataInputStream in = new DataInputStream(new
 FileInputStream("invoice1.txt"));

BufferedReader brin = new BufferedReader(new InputStreamReader(new DataInputStream(new FileInputStream("invoice1.txt"))));
        double price;
        int unit;
        String desc;
        double total = 0.0;
        try {
            while (true) {
                price = in.readDouble();
                in.readChar();       // throws out the tab
                unit = in.readInt();
                in.readChar();       // throws out the tab
                desc = brin.readLine();
                System.out.println("You've ordered " +
    unit + " units of " +
    desc + " at $" + price);
  System.out.println(desc);
                total = total + unit * price;
            }
        } catch (EOFException e) {
        }
        System.out.println("For a TOTAL of: $" + total);
        in.close();
 

Still it's not showing the right thing...

[Veena Rani]

If you have created your file using DataOutStream writeInt, writeDouble etc. then only you can read it using readInt() or readDouble() etc.
If you have a simple text file then you can not use readInt or readDouble.
In case of normal text file with tab seperated data you can use BufferReader to read the line by line record and seperate the tab seperated data using StringTokenizer.
Your code will look something like this
while ((desc = brin.readLine()) != null) {
StringTokenizer st = new StringTokenizer(desc,"\t");
//some check for no. of tokens
unit = Integer.parseInt(st.nextToken());
price = Integer.parseInt(st.nextToken());
desc = st.nextToken();
System.out.println("You've ordered " +unit + " units of " +desc + " at $" + price);
System.out.println(desc);
total = total + unit * price;
}