import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;public class TestPasswordLoad extends JFrame implements ActionListener{
private JLabel account,password,display;
private JTextField input_account;
private TextField input_password;
private JButton Load,Enrol;
private JPanel jp1,jp2,jp3;
public TestPasswordLoad(String s){
super(s);
setLayout(new BorderLayout());
account = new JLabel("Account: ");
password = new JLabel("password:");
display = new JLabel("");
input_account = new JTextField(15);
input_password = new TextField(15);
input_password.setEchoChar('*');
Load = new JButton("Load");
Enrol = new JButton("Enrol");
jp1 = new JPanel(new FlowLayout());
jp2 = new JPanel(new FlowLayout());
jp3 = new JPanel(new FlowLayout());
add(jp1,"North");
add(jp2);
add(jp3,"South");
jp1.add(account);
jp1.add(input_account);
jp2.add(password);
jp2.add(input_password);
jp2.add(display);
jp3.add(Load);
jp3.add(Enrol);
Enrol.addActionListener(this);
Load.addActionListener(this);
setVisible(true);
setBounds(80,80,360,180); addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
} public void actionPerformed(ActionEvent e) {
if(e.getSource() == Enrol){
JFrame jf = new JFrame();
String ss = "注册账号";
boolean bb = true;
new LoadDialog(jf,ss,bb);
} if(e.getSource() == Load){
String account =input_account.getText();
String password = input_password.getText();
String accountcompare = null;
String passwordcompare = null;
try{
BufferedReader r = new BufferedReader(new FileReader("F:\\Acont_Passwored.txt"));
accountcompare = r.readLine();
//如何读遍文件中的每一行账号和密码
passwordcompare =r.readLine();
}catch(IOException ee){}
account = "account:"+account;
password = "password:"+password;
if(account.equals(account) == true && password.equals(password) == true){
display.setText("密码正确,系统正在登陆");
input_account.setText(null);
input_password.setText(null);
}
else {
display.setText("密码错误,请重新输入");
input_account.setText(null);
input_password.setText(null);
}
}
} public static void main(String[] args){
new TestPasswordLoad("Loading...");
}
}class LoadDialog extends Dialog implements ActionListener{
private JLabel account,password,display;
private JTextField input_account;private TextField input_password;
private JButton ok;
private JPanel jp1,jp2,jp3;
public LoadDialog(Frame f, String s, boolean b){
super(f,s,b);
setBounds(80,80,360,180);
setLayout(new BorderLayout());
account = new JLabel("Account: ");
password = new JLabel("password:");
display = new JLabel("");
input_account = new JTextField(15);
input_password = new TextField(15);
input_password.setEchoChar('*');
ok = new JButton("OK");
jp1 = new JPanel(new FlowLayout());
jp2 = new JPanel(new FlowLayout());
jp3 = new JPanel(new FlowLayout());
add(jp1,"North");
add(jp2);
add(jp3,"South");
jp1.add(account);
jp1.add(input_account);
jp2.add(password);
jp2.add(input_password);
jp2.add(display);
jp3.add(ok);
ok.addActionListener(this);
setVisible(true);
validate();
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
setVisible(false);
}
}); } public void actionPerformed(ActionEvent e){
if(e.getSource() == ok){
String account =input_account.getText();
String password = input_password.getText();
String comp=null;
try{
BufferedReader r = new BufferedReader(new FileReader("F:\\Acont_Passwored.txt"));
comp = r.readLine();
}catch(IOException ee){} String compare = "account:"+comp; if(compare.equals(account)){
display.setText("该账户已注册"); //display无法显示,并且当输入两个一样德账户时,这两个相同的张户也会记录到文件中,这是为什么
input_account.setText(null);
}else{
try{
BufferedWriter w = new BufferedWriter(new FileWriter("F:\\Acont_Passwored.txt",true));
if(account.length()>=5 && password.length()>=6){
w.write("account:"+account);
w.newLine();
w.write("password:"+password);
w.newLine();
w.flush();
w.close();
setVisible(false);
}
else
{
display.setText("账号或密码过短,请重新输入"); // display无法显示出来???
input_account.setText(null);
input_password.setText(null);
}
}catch(IOException ex){
display.setText("文件错误");
}
}
}
}
}
import java.awt.*;
import java.awt.event.*;
import java.io.*;public class TestPasswordLoad extends JFrame implements ActionListener{
private JLabel account,password,display;
private JTextField input_account;
private TextField input_password;
private JButton Load,Enrol;
private JPanel jp1,jp2,jp3;
public TestPasswordLoad(String s){
super(s);
setLayout(new BorderLayout());
account = new JLabel("Account: ");
password = new JLabel("password:");
display = new JLabel("");
input_account = new JTextField(15);
input_password = new TextField(15);
input_password.setEchoChar('*');
Load = new JButton("Load");
Enrol = new JButton("Enrol");
jp1 = new JPanel(new FlowLayout());
jp2 = new JPanel(new FlowLayout());
jp3 = new JPanel(new FlowLayout());
add(jp1,"North");
add(jp2);
add(jp3,"South");
jp1.add(account);
jp1.add(input_account);
jp2.add(password);
jp2.add(input_password);
jp2.add(display);
jp3.add(Load);
jp3.add(Enrol);
Enrol.addActionListener(this);
Load.addActionListener(this);
setVisible(true);
setBounds(80,80,360,180); addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
} public void actionPerformed(ActionEvent e) {
if(e.getSource() == Enrol){
JFrame jf = new JFrame();
String ss = "注册账号";
boolean bb = true;
new LoadDialog(jf,ss,bb);
} if(e.getSource() == Load){
String account =input_account.getText();
String password = input_password.getText();
String accountcompare = null;
String passwordcompare = null;
try{
BufferedReader r = new BufferedReader(new FileReader("F:\\Acont_Passwored.txt"));
accountcompare = r.readLine();
//如何读遍文件中的每一行账号和密码
passwordcompare =r.readLine();
}catch(IOException ee){}
account = "account:"+account;
password = "password:"+password;
if(account.equals(account) == true && password.equals(password) == true){
display.setText("密码正确,系统正在登陆");
input_account.setText(null);
input_password.setText(null);
}
else {
display.setText("密码错误,请重新输入");
input_account.setText(null);
input_password.setText(null);
}
}
} public static void main(String[] args){
new TestPasswordLoad("Loading...");
}
}class LoadDialog extends Dialog implements ActionListener{
private JLabel account,password,display;
private JTextField input_account;private TextField input_password;
private JButton ok;
private JPanel jp1,jp2,jp3;
public LoadDialog(Frame f, String s, boolean b){
super(f,s,b);
setBounds(80,80,360,180);
setLayout(new BorderLayout());
account = new JLabel("Account: ");
password = new JLabel("password:");
display = new JLabel("");
input_account = new JTextField(15);
input_password = new TextField(15);
input_password.setEchoChar('*');
ok = new JButton("OK");
jp1 = new JPanel(new FlowLayout());
jp2 = new JPanel(new FlowLayout());
jp3 = new JPanel(new FlowLayout());
add(jp1,"North");
add(jp2);
add(jp3,"South");
jp1.add(account);
jp1.add(input_account);
jp2.add(password);
jp2.add(input_password);
jp2.add(display);
jp3.add(ok);
ok.addActionListener(this);
setVisible(true);
validate();
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
setVisible(false);
}
}); } public void actionPerformed(ActionEvent e){
if(e.getSource() == ok){
String account =input_account.getText();
String password = input_password.getText();
String comp=null;
try{
BufferedReader r = new BufferedReader(new FileReader("F:\\Acont_Passwored.txt"));
comp = r.readLine();
}catch(IOException ee){} String compare = "account:"+comp; if(compare.equals(account)){
display.setText("该账户已注册"); //display无法显示,并且当输入两个一样德账户时,这两个相同的张户也会记录到文件中,这是为什么
input_account.setText(null);
}else{
try{
BufferedWriter w = new BufferedWriter(new FileWriter("F:\\Acont_Passwored.txt",true));
if(account.length()>=5 && password.length()>=6){
w.write("account:"+account);
w.newLine();
w.write("password:"+password);
w.newLine();
w.flush();
w.close();
setVisible(false);
}
else
{
display.setText("账号或密码过短,请重新输入"); // display无法显示出来???
input_account.setText(null);
input_password.setText(null);
}
}catch(IOException ex){
display.setText("文件错误");
}
}
}
}
}
一般来说不要混用AWT和Swing组件。另:把你的问题说出来,只贴代码不知你到底有什么问题
import java.awt.*;
import java.awt.event.*;
import java.io.*;public class TestPasswordLoad extends JFrame implements ActionListener {
private JLabel account, password, display;
private JTextField input_account;
private TextField input_password;
private JButton Load, Enrol;
private JPanel jp1, jp2, jp3; public TestPasswordLoad(String s) {
super(s);
setLayout(new BorderLayout());
account = new JLabel("Account: ");
password = new JLabel("password:");
display = new JLabel("");
input_account = new JTextField(15);
input_password = new TextField(15);
input_password.setEchoChar('*');
Load = new JButton("Load");
Enrol = new JButton("Enrol");
jp1 = new JPanel(new FlowLayout());
jp2 = new JPanel(new FlowLayout());
jp3 = new JPanel(new FlowLayout());
add(jp1, "North");
add(jp2);
add(jp3, "South");
jp1.add(account);
jp1.add(input_account);
jp2.add(password);
jp2.add(input_password);
jp2.add(display);
jp3.add(Load);
jp3.add(Enrol);
Enrol.addActionListener(this);
Load.addActionListener(this);
setVisible(true);
setBounds(80, 80, 360, 180); addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
} public void actionPerformed(ActionEvent e) {
if (e.getSource() == Enrol) {
JFrame jf = new JFrame();
String ss = "注册账号";
boolean bb = true;
new LoadDialog(jf, ss, bb);
System.out.println("new LoadDialog");
} if (e.getSource() == Load) {
String account = input_account.getText();
String password = input_password.getText();
String accountcompare = null;
String passwordcompare = null;
try {
BufferedReader r = new BufferedReader(new FileReader(new File("Acont_Passwored.txt")
));
accountcompare = r.readLine();
// 如何读遍文件中的每一行账号和密码
passwordcompare = r.readLine();
} catch (IOException ee) { }
String ac = "account:" + account; //你这里也有错误,对比一下你的程序和我的程序
System.out.println(account);
String pa = "password:" + password;
if (account.equals(ac) == true
&& password.equals(pa) == true) {
display.setText("密码正确,系统正在登陆");
input_account.setText(null);
input_password.setText(null);
} else {
display.setText("密码错误,请重新输入");
input_account.setText(null);
input_password.setText(null);
}
}
} public static void main(String[] args) {
new TestPasswordLoad("Loading...");
}}class LoadDialog extends Dialog implements ActionListener {
private JLabel account, password, display;
private JTextField input_account;
private TextField input_password;
private JButton ok;
private JPanel jp1, jp2, jp3; public LoadDialog(Frame f, String s, boolean b) {
super(f, s, b);
setBounds(80, 80, 360, 180);
setLayout(new BorderLayout());
account = new JLabel("Account: ");
password = new JLabel("password:");
display = new JLabel("");
input_account = new JTextField(15);
input_password = new TextField(15);
input_password.setEchoChar('*');
ok = new JButton("OK");
jp1 = new JPanel(new FlowLayout());
jp2 = new JPanel(new FlowLayout());
jp3 = new JPanel(new FlowLayout());
add(jp1, "North");
add(jp2);
add(jp3, "South");
jp1.add(account);
jp1.add(input_account);
jp2.add(password);
jp2.add(input_password);
jp2.add(display);
jp3.add(ok);
ok.addActionListener(this);
setVisible(true);
validate();
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
setVisible(false);
}
}); } public void actionPerformed(ActionEvent e) {
if (e.getSource() == ok) {
String account = input_account.getText();
String password = input_password.getText();
String comp = null;
try {
BufferedReader r = new BufferedReader(new FileReader(new File("Acont_Passwored.txt")
));
comp = r.readLine();
} catch (IOException ee) {
ee.printStackTrace();
}// String compare = "account:"+comp;
String compare = comp;
String temp="account:"+account;
if (compare.equals(temp)) {
display.setText("该账户已注册"); // display无法显示,并且当输入两个一样德账户时,这两个相同的张户也会记录到文件中,这是为什么
// input_account.setText(null);
JOptionPane.showMessageDialog(null, "该用户已注册!");
setVisible(false);
} else {
try {
BufferedWriter w = new BufferedWriter(new FileWriter(new File("Acont_Passwored.txt")
, true)); //向文件追加内容
if (account.length() >= 5 && password.length() >= 6) {
w.write("account:" + account);
w.newLine();
w.write("password:" + password);
w.newLine();
w.flush();
w.close();
setVisible(false);
// System.out.println("文件追加内容"); //测试语句
} else {
display.setText("账号或密码过短,请重新输入"); // display无法显示出来???
input_account.setText(null);
input_password.setText(null);
}
} catch (IOException ex) {
display.setText("文件错误");
}
}
}
}
}这里有个文件相关的帖子,http://topic.csdn.net/u/20100511/22/2196893e-9906-4041-b1e9-57ea2c17da05.html
注意看五楼的回复,会对你有帮助的,加油!