Java Programming

Hi All,

I am wondering whether there is a way to read a text file multiple times without having to re-open it over and over again on Windows platform.

Below is how I have done it by re-opening it which may not be the most efficient method:

FileReader localEmpFrIn1st = new FileReader(new File("C:\Employee.txt"));
BufferedReader localEmpBrIn1st = new BufferedReader(localEmpFrIn1st);
while ((strLine1st = localEmpBrIn1st.readLine()) != null) {
     .............
}   
                
System.out.flush();         // line 287
localEmpBrIn1st.close();  // line 288
localEmpFrIn1st.close();  // line 289
                
FileReader localEmpFrIn2nd = new FileReader(localEmpFIn);
BufferedReader localEmpBrIn2nd = new BufferedReader(localEmpFrIn2nd);
               
while ((strLine2nd = localEmpBrIn2nd.readLine()) != null) {
    .........
}

Using either localEmpFrIn1st.mark(0) or localEmpFrIn1st.reset() resulted in the following error:

SEVERE: null
java.io.IOException: mark(0) or reset() not supported
* at java.io.Reader.mark(Reader.java:232)*
* at processEmployee(processEmployee.java:289)*
Any reason why this exception is occurring and how to avoid it? I believe that another way to use mark() & reset() effectively is with the use of RandomAccessFile but don’t know how to read C:\Employee.txt in sequence, the same as how FileReader would in this example illustrated.

I thought the purpose of line 287 was to flush all data in cache so that it would be ready for mark(0) or reset() again.

Thanks in advance,

Jack