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POAdding action to a JButton when using a for loop
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  1. POAdding action to a JButton when using a for loop
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    copied!<p>I'm trying to dynamically add buttons (JButtons), which changes names everytime. I doing it with a for loop and is not really problematic. but when adding an action listener or identifying which button got pressed, that is when things don't work so good.</p> <p><strong>MyFrame.java</strong></p> <pre><code>import javax.swing.*; import java.awt.event.*; import java.awt.GridLayout; public class MyFrame extends JFrame implements ActionListener { private JPanel panel; private static JButton[] buttons = new JButton[18]; // set all static calculate JButtons private static JButton equalsBtn, addBtn, subBtn, multiBtn, divBtn, clearBtn, plusMinusBtn, decimalBtn; // set all static number JBtuttons private static JButton zeroBtn, oneBtn, twoBtn, threeBtn, fourBtn, fiveBtn, sixBtn, sevenBtn, eightBtn, nineBtn; private static JTextField resultField; // numOne is the first row of figures en the second numSecond is the second row private static double numOne, numSecond, result; private static double plusMinus; private static int addClick = 0, subClick = 0, multiClick = 0, divClick = 0; private static int clearField; public MyFrame() { // configure the JFrame super("Rekennen maar!"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setResizable(false); setSize(230, 370); setLocationRelativeTo(null); // confugure the JPanel panel = new JPanel(); panel.setSize(230, 370); panel.setLayout(new GridLayout(5, 0)); // array string whit all the button names String a_btnNames[] = {"clearBtn", "plusMinusBtn", "divBtn", "multiBtn", "sevenBtn", "eightBtn", "nineBtn", "subBtn", "fourBtn", "fiveBtn", "sixBtn", "addBtn", "oneBtn", "twoBtn", "threeBtn", "equalsBtn", "zeroBtn", "decimalBtn"}; // array String whit all button characters String a_btnCharts[] = {"C", "+/-", "/", "*", "7", "8", "9", "-", "4", "5", "6", "+", "1", "2", "3", "=", "0", "."}; for(int i = 0; i &lt; buttons.length; i++) { // make new button name buttons[i] = new JButton(a_btnNames[i]); // add button to panel panel.add(new JButton(a_btnCharts[i])); //System.out.println(buttons[i]); } // add panel when he's filled add(panel); setVisible(true); } public void actionPerformed(ActionEvent e) { // press the button if ( e.getSource() == ...... ) { System.out.println("123"); } } } </code></pre> <p><strong>Main.java</strong></p> <pre><code>public class Main { public static void main(String[] arg) { MyFrame mf = new MyFrame(); } } </code></pre>
 

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