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POhow to work with Multidimensional arraylist?
 

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    <p>Hey guys sorry i'm a noob at java but im trying to make something and i need a multidimensional array list. It must be implemented into the following code: </p> <pre><code>public static void OpenFile() { ArrayList&lt;ArrayList&lt;String&gt;&gt; array = new ArrayList&lt;ArrayList&lt;String&gt;&gt;(); int retrival = chooser.showOpenDialog(null); if (retrival == JFileChooser.APPROVE_OPTION) { try (BufferedReader br = new BufferedReader(new FileReader( chooser.getSelectedFile()))) { String sCurrentLine; while ((sCurrentLine = br.readLine()) != null) { if (sCurrentLine.equals("")) { continue; } else if (sCurrentLine.startsWith("Question")) { System.out.println(sCurrentLine.split(":")[1]); //add to [0] in array ArrayList } else if (sCurrentLine.startsWith("Answer")) { System.out.println(sCurrentLine.split(":")[1]); //add to [1] in array ArrayList } else if (sCurrentLine.startsWith("Category")) { System.out.println(sCurrentLine.split(":")[1]); //add to [2] in array ArrayList } else if (sCurrentLine.startsWith("Essay")) { System.out.println(sCurrentLine.split(":")[1]); //add to [3] in array ArrayList } } } catch (Exception ex) { ex.printStackTrace(); } } } </code></pre> <p>All the [1] index's of the strings i split need to go into a multidimesional array in this order: question, answer, category, essay.<br> So i am currently using a normal multidimensional array but you cant change the values of it easily. What i want my multidimensional arraylist to look like is this:</p> <p>MultiDimensional ArrayList</p> <ul> <li>[0]: questions(it may be over 100 of them.) </li> <li>[1] answers(it may be over 100 of them.)</li> <li>[2] category(it may be over 100 of them.)</li> <li>[3] essay(it may be over 100 of them.)</li> </ul>
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    1. USuser3103246
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    1. COWhy not just create your own class, which has these four `ArrayList`s as fields?
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    2. COYou can use another datastructure as a `Map<String,List<String>>`
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    3. CO@t0mppa Seems an assignment to deal with List of List :)
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      1. USꜱᴜʀᴇꜱʜ ᴀᴛᴛᴀ
 

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