我正在尝试登录屏幕，其中有10个按钮0-10，只接受4位数字。我存储了一些名为PIN0-PIN03的变量，它保存了一个int值。我希望用户输入4位数的引脚，如果它与存储在变量PIN0-PIN03中的值匹配，则会出现一个名称。
我已完成按钮，我只需要帮助这个ENTER按钮
我用于ENTER按钮的代码是：
int pin = 0000;
int PIN0 = 1234; // if user enters this value the program will start executing the if statments.
int PIN1 = 2345;
int PIN2 = 3456;
int PIN3 = 4567;\\
if (pin == PIN0){
System.out.println("Hi Muhannad");
if (pin == PIN0){ // if user enters PIN0 it will display the below message
System.out.println("Hi Muhannad");
}
if( pin == PIN1){
System.out.println("Hi Mo");
}
if( pin == PIN2){
System.out.println("Hi Mahir");
}
if( pin == PIN3){
System.out.println("Hi Gawi");
}
if(pin != PIN0 || pin != PIN1 || pin != PIN2 || pin != PIN3){
System.out.println("Incorrect pin try again!"); // if user enters anything that doesn't match any of the variables values the "Incorrect pin try again" will apear.
}
请帮助这是我自己创建的一个项目，用于创建类似于银行应用程序的应用程序。
按钮代码：
private void buttonOneActionPerformed(java.awt.event.ActionEvent evt) {
if(evt.getSource() == buttonOne){
if(jTextField1.getText().length() < 4){
if(clearField == 1){
jTextField1.setText("0");
clearField = 0;
} else{
jTextField1.setText(jTextField1.getText() + "1");
}
}
}
}
private void buttonTwoActionPerformed(java.awt.event.ActionEvent evt) {
if(evt.getSource() == buttonTwo){
if(jTextField1.getText().length() < 4){
if(clearField == 1){
jTextField1.setText("2");
clearField = 0;
} else{
jTextField1.setText(jTextField1.getText() + "2");
}
}
}
}
private void buttonThreeActionPerformed(java.awt.event.ActionEvent evt) {
if(evt.getSource() == buttonThree){
if(jTextField1.getText().length() < 4){
if(clearField == 1){
jTextField1.setText("3");
clearField = 0;
} else{
jTextField1.setText(jTextField1.getText() + "3");
}
}
}
}
private void buttonFourActionPerformed(java.awt.event.ActionEvent evt) {
if(evt.getSource() == buttonFour){
if(jTextField1.getText().length() < 4){
if(clearField == 1){
jTextField1.setText("4");
clearField = 0;
} else{
jTextField1.setText(jTextField1.getText() + "4");
}
}
}
}
private void buttonFiveActionPerformed(java.awt.event.ActionEvent evt) {
if(evt.getSource() == buttonFive){
if(jTextField1.getText().length() < 4){
if(clearField == 1){
jTextField1.setText("5");
clearField = 0;
} else{
jTextField1.setText(jTextField1.getText() + "5");
}
}
}
}
private void buttonSixActionPerformed(java.awt.event.ActionEvent evt) {
if(evt.getSource() == buttonSix){
if(jTextField1.getText().length() < 4){
if(clearField == 1){
jTextField1.setText("6");
clearField = 0;
} else{
jTextField1.setText(jTextField1.getText() + "6");
}
}
}// TODO add your handling code here:
}
private void buttonSevenActionPerformed(java.awt.event.ActionEvent evt) {
if(evt.getSource() == buttonSeven){
if(jTextField1.getText().length() < 4){
if(clearField == 1){
jTextField1.setText("7");
clearField = 0;
} else{
jTextField1.setText(jTextField1.getText() + "7");
}
}
}
}
private void buttonEightActionPerformed(java.awt.event.ActionEvent evt) {
if(evt.getSource() == buttonEight){
if(jTextField1.getText().length() < 4){
if(clearField == 1){
jTextField1.setText("8");
clearField = 0;
} else{
jTextField1.setText(jTextField1.getText() + "8");
}
}
}
}
private void buttonNineActionPerformed(java.awt.event.ActionEvent evt) {
if(evt.getSource() == buttonNine){
if(jTextField1.getText().length() < 4){
if(clearField == 1){
jTextField1.setText("9");
clearField = 0;
} else{
jTextField1.setText(jTextField1.getText() + "9");
}
}
}
}
private void buttonZeroActionPerformed(java.awt.event.ActionEvent evt) {
if(evt.getSource() == buttonZero){
if(jTextField1.getText().length() < 4){
if(clearField == 1){
jTextField1.setText("0");
clearField = 0;
} else{
jTextField1.setText(jTextField1.getText() + "0");
}
}
}
答案 0 :(得分：0)
您没有提供有关代码应如何工作的大量信息，但这是一个示例：
public class Bank extends JFrame {
static final int PIN0 = 1234;
static final int PIN1 = 2345;
static final int PIN2 = 3456;
static final int PIN3 = 4567;
JTextField tf = new JTextField();
public Bank() {
JPanel buttonsPanel = new JPanel(new GridLayout(4, 3));
for (int i = 0; i < 10; i++) {
JButton button = new JButton(String.valueOf(i));
button.addActionListener(new NumberAction(i));
buttonsPanel.add(button);
}
JButton enterButton = new JButton("Enter");
enterButton.addActionListener(new EnterAction());
getContentPane().add(tf, BorderLayout.PAGE_START);
getContentPane().add(buttonsPanel, BorderLayout.CENTER);
getContentPane().add(enterButton, BorderLayout.PAGE_END);
setLocationRelativeTo(null);
setDefaultCloseOperation(EXIT_ON_CLOSE);
pack();
setVisible(true);
}
class NumberAction extends AbstractAction {
int i;
NumberAction(int i) {
this.i = i;
}
@Override
public void actionPerformed(ActionEvent e) {
if (tf.getText().length() < 4)
tf.setText(tf.getText() + i);
}
}
class EnterAction extends AbstractAction {
@Override
public void actionPerformed(ActionEvent e) {
switch (Integer.parseInt(tf.getText())) {
case PIN0:
System.out.println("Hi 0");
break;
case PIN1:
System.out.println("Hi 1");
break;
case PIN2:
System.out.println("Hi 2");
break;
case PIN3:
System.out.println("Hi 3");
break;
default:
System.out.println("Incorrect pin try again!");
}
tf.setText("");
}
}
public static void main(String args[]) {
new Bank();
}
}