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POConditional JComboBox inside JTable - How to Automatically change values
 

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    <p>I have a table filled with comboboxes, What I want to do is the folowing: If an element in a combobox is selected, then automatically change the selection on another combo (the reciprocal). I can't figureout a way to do it. Here I post an image describing what I want to do. <img src="https://i.stack.imgur.com/quU3W.png" alt="Matrix automatic JComboboxUpdate"></p> <p>The code of my table is the following:</p> <pre><code>public void createCriteriaMatrix(){ jTableCriteria = new JTable(); // COLUMNS String[] column = new String[problem.getCriteria()+1]; for(int i=0; i&lt;problem.getCriteria()+1; i++){ column [i] = " "+i; if(i==0){ column [i] = " "; } } // DATA CELLS String [][] data = new String[problem.getCriteria()][problem.getCriteria()+1]; for(int j=0; j&lt;problem.getCriteria()+1; j++){ for(int i=0; i&lt;problem.getCriteria(); i++){ data [i][j]=" "; if(j==0){ data [i][j] = " "+(i+1); } } } //SOME TABLE FORMAT DefaultTableModel model = new DefaultTableModel(data , column ){ @Override public boolean isCellEditable(int row, int column) { return column != 0; } }; //Calling to RenderCells() to format cell colors jTableCriteria.setDefaultRenderer (Object.class, new RenderCells()); jTableCriteria.setModel(model); jTableCriteria.getTableHeader().setReorderingAllowed(false); this.placeCombosTable(); } public void placeCombosTable(){ for(int i=0; i&lt;=problem.getCriteria(); i++){ for(int j=0; j&lt;=problem.getCriteria(); j++){ TableColumn weighting= jTableCriteria.getColumnModel().getColumn(i); JComboBox comboBox = new JComboBox(); comboBox.addItem("1"); comboBox.addItem("2"); comboBox.addItem("3"); comboBox.addItem("4"); comboBox.addItem("5"); comboBox.addItem("6"); comboBox.addItem("7"); comboBox.addItem("1/2"); comboBox.addItem("1/3"); comboBox.addItem("1/4"); comboBox.addItem("1/5"); comboBox.addItem("1/6"); comboBox.addItem("1/7"); if(i==j){ comboBox.setSelectedIndex(0); } weighting.setCellEditor(new DefaultCellEditor(comboBox)); } } } </code></pre>
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    1. USFederico Matias Rodriguez
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    1. COSolved it!, below is the code explained.
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