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POMarks Program Calculations?
 

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  1. POMarks Program Calculations?
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    <p>I have to make a marks program that displays a set of marks that a user enters and some calculations (average, maximum, minimum, range, etc.). It should also be able to sort the marks in ascending order. I managed (with help) to display the marks and sort them but I cannot get the program to do the calculations and display them. This is all the code I have so far: </p> <pre><code> ArrayList &lt;Integer&gt; marks = new ArrayList(); private void addButtonActionPerformed(java.awt.event.ActionEvent evt) { Collections.addAll(marks, (Integer.parseInt(markInput.getText()))); StringBuilder text = new StringBuilder(); for (Integer mark: marks) { text.append(mark.toString()).append('\n'); } markdisplayTextArea.setText(text.toString()); } private void sortButtonActionPerformed(java.awt.event.ActionEvent evt) { Collections.sort(marks); StringBuilder text = new StringBuilder(); for (Integer mark: marks) { text.append(mark.toString()).append('\n'); } markdisplayTextArea.setText(text.toString()); } private void analyzeButtonActionPerformed(java.awt.event.ActionEvent evt) { analyzeTextArea.setText("Class average:" +); analyzeTextArea.setText("Maximum mark:" +); analyzeTextArea.setText("Minimum mark:" +); analyzeTextArea.setText("Range of marks:" +); } </code></pre> <p>The calculations must be displayed in a <code>TextArea</code> when the <code>"analyze"</code> button is pressed. I currently have no idea of how to go about doing the calculations or displaying them. Any guidance would be appreciated. </p>
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