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copied!<p>First of all: You can use arrays for your text fields:</p> <pre><code>JTextField[][] matrix1TextFields, matrix2TextFields, matrix3TextFields; private void refreshMatrixComponents(int r, int c) { matrix1TextFields = new JTextField[r][c]; matrix2TextFields = new JTextField[r][c]; matrix3TextFields = new JTextField[r][c]; for (int row = 0; row < r; row++) { for (int col = 0; col < c; col++) { matrix1TextFields[row][col] = new JTextField(); matrix2TextFields[row][col] = new JTextField(); matrix3TextFields[row][col] = new JTextField(); } } placeMatrixTextField(); } </code></pre> <p>For the layout manager, there are a lot of options. I would either recommend <code>GridLayout</code> (very easy to use) or <code>GridBagLayout</code> (more difficult to use, but more flexible) or something 3rd party like <code>MigLayout</code> (you will have to dive into the syntax a bit, but I think it's totally worth the effort). I also recommend creating a <code>JPanel</code> for every matrix and put all the text fields in there. Then place those <code>JPanels</code> + the rest of the components:</p> <pre><code>JPanel matrix1Panel, matrix2Panel, matrix3Panel; private void placeMatrixTextField() { int r = matrix1TextFields.length, c = matrixTextFields[0].length; matrix1Panel = new JPanel(); matrix2Panel = new JPanel(); matrix3Panel = new JPanel(); matrix1Panel.setLayout(new GridLayout(r, c)); matrix2Panel.setLayout(new GridLayout(r, c)); matrix3Panel.setLayout(new GridLayout(r, c)); for (int row = 0; row < r; row++) { for (int col = 0; col < c; col++) { matrix1Panel.add(matrix1TextFields[row][col]); matrix2Panel.add(matrix2TextFields[row][col]); matrix3Panel.add(matrix3TextFields[row][col]); } } // now place your panels } </code></pre>

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