如果 else 分支从未使用过

Question

我正在使用 if else 并突然写下一些代码， else 表示从未使用过该分支......但它应该可以工作。声明看起来像这样JOptionPane.showConfirmDialog(null,full_name+"\n"+number_age+"\n"+gender+"\n"+address+                 "\n"+birthday+"\n"+cell_no,"CHECK INFORMATION!",JOptionPane.YES_NO_OPTION);if(true){    JOptionPane.showMessageDialog(null,"Thank you for Entering");}else{    JOptionPane.showMessageDialog(null,"Please Retry");}

Answer 1

检查JOptionPane.showConfirmDialog响应并与JOptionPane.YES_NO_OPTION：

int answer = JOptionPane.showConfirmDialog(null,full_name+"\n"+number_age+"\n"+gender+"\n"+address+

                 "\n"+birthday+"\n"+cell_no,"CHECK INFORMATION!",JOptionPane.YES_NO_OPTION);

if (JOptionPane.YES_OPTION == answer)) {

    JOptionPane.showMessageDialog(null,"Thank you for Entering");

} else {

    JOptionPane.showMessageDialog(null,"Please Retry");

}