Databases
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    <p>You can have a HashMap with key as (Questions,Answers..) and ArrayList as value</p> <pre><code>HashMap &lt;String,ArrayList&lt;String&gt;&gt; array = new HashMap&lt;String,ArrayList&lt;String&gt;&gt;(); if(array.containsKey("Question")){ array.get("Question").add(sCurrentLine.split(":")[1]); }else{ ArrayList&lt;String&gt; questions = new ArrayList&lt;String&gt;(); questions.add(sCurrentLine.split(":")[1]); array.put("Question",questions ); } </code></pre> <p>Modification In your Code</p> <pre><code>public static void OpenFile() { HashMap &lt;String,ArrayList&lt;String&gt;&gt; array = new HashMap&lt;String,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]); if(array.containsKey("Question")){ array.get("Question").add(sCurrentLine.split(":")[1]); }else{ ArrayList&lt;String&gt; questions = new ArrayList&lt;String&gt;(); questions.add(sCurrentLine.split(":")[1]); array.put("Question",questions ); } //add to [0] in array ArrayList } else if (sCurrentLine.startsWith("Answer")) { System.out.println(sCurrentLine.split(":")[1]); //add to [1] in array ArrayList //Do the same as above if condition with Answer as Key } 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>
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    1. POhow to work with Multidimensional arraylist?
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    1. USSaravana Kumar
    1. USSaravana Kumar
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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