Java中的警报消息弹出速度过快

Question

截屏：我正在尝试使用SceneBuilder实施警报，它正在工作。唯一的问题是，它不会等待用户在显示错误消息之前开始在字段中输入任何内容。当我单击添加零件时，它甚至在更改场景之前都会显示错误消息。我退出后，确实会更改场景，请在警报上单击“确定”。任何帮助将不胜感激。

private boolean validateInput(){
        try{
           double dPrice = 1.00;
           dPrice = Double.parseDouble(addPartPrice.getText());

       } catch (NumberFormatException | NullPointerException nfe){
           AlertMessage.errorPart(3, addPartPrice);
           return false;
       }[enter image description here][1]
        try{
           int iStock = Integer.parseInt(addPartInventory.getText());
       } catch (NumberFormatException | NullPointerException nfe){
           return false;
       }
        try{
           int iMin = Integer.parseInt(addPartMin.getText());
       } catch (NumberFormatException | NullPointerException nfe){
           return false;
       }
        try{
           int iMax = Integer.parseInt(addPartMax.getText());
       } catch (NumberFormatException | NullPointerException nfe){
           return false;
       }
        if(!partIsoutSourcedFromCompany){
        try{
           int iID = Integer.parseInt(addPartSource.getText());
       } catch (NumberFormatException | NullPointerException nfe){
           return false;
       }
        }
        return addPartName.getText() != null &&
                addPartSource.getText() != null &&
                Integer.parseInt(addPartMin.getText()) >= 0 &&
                Integer.parseInt(addPartMin.getText()) <= Integer.parseInt(addPartInventory.getText()) &&
                Integer.parseInt(addPartInventory.getText()) <= Integer.parseInt(addPartMax.getText()) &&
                Double.parseDouble(addPartPrice.getText()) >= 0;
    }

Answer 1

您必须将您的validateatInput方法绑定到添加按钮/功能。因此，在用户单击添加按钮之前，代码执行（即validateInput）将处于挂起状态。