please suggest me below code out put
// [MyApp?.java]
import java.awt.*;
public class myApp extends java.applet.Applet {
public String username = "";
public String password = "";
boolean userValid = false;
public void init() {
while (!userValid) login();
//if you get here, the user name and password are correct
}
public void login() {
MyLogin? login = new MyLogin? (new Frame(""));//Calling another class MyLogin? to create a new Frame.
requestFocus();//In order to receive keyboard input, you have to call this method.
if (login.id) {
username = login.username.getText();// Get the username from MyLogin? class
password = login.password.getText();// Get the password from MyLogin? class
userValid = validateUser(username , password);
System.out.println(userValid?"valid":"invalid");
}
login.dispose();//When the dialog box is closed, dispose is called. It frees all system resources associated with the dialog box window.
}
private boolean validateUser(String usr, String pwd) {
// here you will code some logic to validate the username and password
// for testing purpose :
// username = applet and password = niit
return (usr.equals("applet") && pwd.equals("niit"));
}
}
Here is the code for MyLogin?.java file.
// [MyLogin?.java]
import java.awt.*;
import java.awt.event.*;
public class MyLogin? extends Dialog implements ActionListener? {
boolean id = false;
Button ok,can;
TextField? username;
TextField? password;
MyLogin?(Frame frame){
super(frame, "Welcome", true); //Calling super class argument constructor
setLayout(new FlowLayout?()); //Setting the current layout manager, FlowLayout? is the default layout manager.
username = new TextField?(15); // Creating a TextField?
password = new TextField?(15);
password.setEchoChar('*'); // Set the password echoing character to *
add(new Label("User :")); //Creating and adding a new Label
add(username); //adding the component created earlier
add(new Label("Password :"));
add(password);
addOKCancelPanel();
createFrame();
pack();
setVisible(true); // A Frame window will not come into visibility until you call this method.
}
void addOKCancelPanel() {
Panel p = new Panel();
p.setLayout(new FlowLayout?());
createButtons( p );
add( p );
}
void createButtons(Panel p) {
p.add(ok = new Button("OK"));
ok.addActionListener(this); // Started listening action events for OK button
p.add(can = new Button("Cancel"));
can.addActionListener(this); // Started listening action events for Cancel button
}
void createFrame() {
Dimension d = getToolkit().getScreenSize();
setLocation(d.width/4,d.height/3);
}
public void actionPerformed(ActionEvent? ae){
if(ae.getSource() == ok) { // if ok is clicked
id = true;
setVisible(false);
}
else if(ae.getSource() == can) { // if cancel is clicked
setVisible(false);
}
}
}
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