所以我工作的一個JFrame,我創造了一些JFormattedTextFields。每次我在Desing View和「Source」之間切換時,組件都停留在Design View中。但突然每次我切換到設計模式時,文本框都消失了,但是當我執行程序時,它們顯示出來了。這可能是什麼原因?
這裏是我的面板,我添加文本框:
private JPanel getPanel_2() {
if (panelFishData == null) {
panelFishData = new JPanel();
panelFishData.setBounds(161, 23, 253, 264);
panelFishData.setLayout(new GridLayout(4, 2, 0, 0));
panelFishData.add(getLblName());
panelFishData.add(getFormatedTextFieldNameFish());
panelFishData.add(getLblMinWeight());
panelFishData.add(getFormattedTextFieldMinWeight());
panelFishData.add(getLblMaxWeight());
panelFishData.add(getFormattedTextFieldMaxWeight());
panelFishData.add(getLblstOccurence());
panelFishData.add(getFormattedTextFieldFirstOccurence());
}
return panelFishData;
}
這裏是我的JFormattedTextFields之一:
private JFormattedTextField getFormattedTextFieldMinWeight() {
MaskFormatter mf = createMinWeightMask();
if (formattedTextFieldMinWeight == null) {
formattedTextFieldMinWeight = new JFormattedTextField(mf);
}
return formattedTextFieldMinWeight;
}
private MaskFormatter createMinWeightMask() {
MaskFormatter mf;
try{
mf = new MaskFormatter("### g");
}
catch(Exception ex){
mf=null;
}
return mf;
}