Java序列号问题
来源:百度知道 编辑:UC知道 时间:2024/05/09 05:59:10
方案1:
去掉这句在程序中 final MaskFormatter mf2 = new MaskFormatter("##############");
把程序中这句final JFormattedTextField jtf4 = new JFormattedTextField(mf2);",
改成:
final JFormattedTextField jtf4 = new JFormattedTextField(new Integer(0));
bt3的action设为如下:
bt3.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
jl102.setText(jtf4.getText());
}
});
方案2:
去掉
MaskFormatter mf2 = new MaskFormatter("#");
final JFormattedTextField jtf4 = new JFormattedTextField(new Integer(0));
改成:
final JTextField jtf4 = new JTextField();
bt3的action改为:
bt3.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
try {
int a = Integer.parseInt(jtf4.getText());
jl102.setText(jtf4.getText());