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POStruggling with methodizing my main program (a method that has a LinkedList as input and output specifically). Where am i going wrong with this?
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copied!<p>first off thank you for the pointer that something.endsWith doesn't do what i was expecting it to do yesterday. Now the reason i would like to borrow your brains today is the following; i have written my program and it does exactly what i need but it's all in a chunky 'main' so i wanted to shift some parts of the code to methods to make it more readable/mantainable and i am struggling with a method that works with a LinkedList.</p> <p>The code as part of the main program was as follows:</p> <pre><code>/* Variable definition */ List mzList = new LinkedList(); mzList = new ArrayList(); /* Reading the input file */ try { FileInputStream a_stream = new FileInputStream("./precursors"); DataInputStream a_in = new DataInputStream(a_stream); BufferedReader a_reader = new BufferedReader(new InputStreamReader(a_in)); String a_line; while ((a_line = a_reader.readLine()) != null) { if (a_line.equals("---")) { /* Do Nothing... */ } else { mzList.add(a_line); } } /* ends the loop that reads input file */ a_in.close(); */ } </code></pre> <p>I have been trying to write this into a method as follows:</p> <pre><code>public static LinkedList filereader (String filename, LinkedList someList) { FileInputStream input = new FileInputStream(filename); DataInputStream in = new DataInputStream(input); BufferedReader reader = new BufferedReader(new InputStreamReader(in)); String line; while ((line = reader.readLine()) != null) { if (line.equals("---")) { /* Do Nothing... */ } else { someList.add(line); } } in.close(); return(someList); } </code></pre> <p>I would then attempt to call this in the main program as follows:</p> <pre><code>mzList = class.filreader("precursor",mzList); </code></pre> <p>which gives me a bunch of problems, obviously i am doing something stupid and i beg forgiveness for my harassing you all with this problem but i am quite new to Java and searching through the other 'questions' didn't really help me solve my problem.</p> <p>Kind Regards, Bas Jansen</p> <p>PS: Edited some blatant typo's and formatting errors</p>

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