JFrame面板正在显示，但是按钮没有响应

Question

我创建了一个链接到JFrame工作表的项目，该项目显示面板，但是按钮不响应。我什至无法编辑某些编码，因为它是从IDE自动生成的代码。我在想的可能是缺少动作处理程序。

   private void buttonCalculateActionPerformed(java.awt.event.ActionEvent evt) {                                                
    // declare variables;
    float monthlyAmount;
    float annualinterestRate;
    float monthlyinterestRate;
    float months;
    float years;
    float i;
    float futureValue = 0;

    String msg = "";

    //input - read the boxes in FVForm design
    monthlyAmount = Float.parseFloat(txtmonthlyAmount.getText());
    annualinterestRate = Float.parseFloat(txtannualinterestRate.getText());
    years = Float.parseFloat(txtyears.getText());

    //process - obtain the monthly interest rate
    months = 12 * years;
    monthlyinterestRate = annualinterestRate/12/100;

    list2.removeAll();

    //output - Calculate the future values for each month
    for (i = 1; i <= months; i++) {
    futureValue = (futureValue + monthlyAmount) * (1 + monthlyinterestRate);
    msg = String.format("Month: %3d Value: $%8.2f", i, futureValue);
    list2.add(msg);
    }// end for loop    
}