Selecting elements of 2D array with GUI

Hello!

I am building a Java application with GUI (JFrame form) that is supposed to display all or selected elements of below 2D array (images attached):

Year
Season  2002    2003    2004    2005
Spring  150 163 147 138
Summer  100 89  88  87
Autumn  157 97  96  94
Winter  184 133 129 117

I figured out so far how to display all years and seasons, also the smallest or largest element or smallest or largest sum for each row or column. What I am struggling with is how to write a code to display selected elements only (there are 2 comboboxes: 1 for Year (All years, 2002, 2003, 2004, 2005) and 1 for Season (All seasons, Spring, Summer, Autumn, Winter). The user can select any combination (including all elements in a row or column) and this selection should be displayed in the textArea field (including Year and Season headings).

Here's some code I have so far:

1. to display all data

   private void allYearsActionPerformed(java.awt.event.ActionEvent evt) {                                         
    displayRainfall.setText("");
   int[][] rainfall = {{150, 163, 147, 138}, {100, 89, 88, 87}, {157, 97, 96, 94}, {184, 133, 129, 117}};
       String[] seasons = {"Spring", "Summer", "Autumn", "Winter"};
       String[] years = {"2002", "2003", "2004", "2005"};
       int i = 0;
       int j = 0;
   
   
   String rain = "\n\t\t\t\n";
   rain = "\t\t2002\t2003\t2004\t2005\n\n";
   for (i = 0; i < 4; i++) {
       rain += "\t" + seasons[i];
       for (j = 0; j < 4; j++) {
           rain += "\t" + rainfall[i][j];
       }
       rain += "\n";
   }
   displayRainfall.setText(rain);
   
   
   }        
   

2. to display wettest year

   private void getWtYrActionPerformed(java.awt.event.ActionEvent evt) {
   displayWtYr.setText(""); int[][] rainfall = {{150, 163, 147, 138}, {100, 89, 88, 87}, {157, 97, 96, 94}, {184, 133, 129, 117}}; String[] seasons = {"Spring", "Summer", "Autumn", "Winter"}; String[] years = {"2002", "2003", "2004", "2005"}; int sum[] = new int[rainfall[0].length];

       for (int j = 0; j < rainfall[0].length; j++) {
           int total = 0;
           for (int i = 0; i < rainfall.length; i++) {
               total += rainfall[i][j];
               sum[j] = total;
           }
   
   
   }
   int yearWet = 000000;
   
   
   int j = 0;
   int wet= 0;
   for (j = 0; j &lt; rainfall[0].length; j++) {
       if (sum[j] &gt; yearWet) {
          yearWet = sum[j];
           wet = j;
       }
   }
   
   
   displayWtYr.setText("The wettest year was " + years[wet]+" "+ yearWet +"-"+ " mm of rainfall");
   } 
   

   Can you please give me some hints how start with the code for displaying elements of the array selected by user?

Many thanks in advance for your help!

Rafal