Hi buddy
How to use of the Console class in javai/o programming.Please provide me example with programme code.
thanks
How to use of the Console class in java i/o
1736
26-Jul-2016
Mark Devid
26-Jul-2016Hi Guys
Try this programming code
public class ConsoleApp {
private static final int MAX_LOGINS = 3;
public static void main(String[] args) {
ConsoleApp app = new ConsoleApp();
if (app.login()) {
System.out.println("Thanks for logging in!");
} else {
System.out.println("Login failed!");
}
}
private boolean login() {
Console console = System.console();
boolean isAuthenticated = false;
if (console != null) {
int count = 0;
do {
char[] pwd = console.readPassword("[%s]", "Password:");
isAuthenticated = authenticate(pwd);
// delete password from memory
Arrays.fill(pwd, ' ');
console.writer().write("\n");
} while (!isAuthenticated && ++count < MAX_LOGINS);
}
return isAuthenticated;
}
private boolean authenticate(char[] passwd) {
char[] secret = { 'M', ‘i’, ‘N’, ‘D’, ‘S’, ‘T’, ‘I’, ‘C’, ‘K’};
if (java.util.Arrays.equals(passwd, secret)) {
java.util.Arrays.fill(passwd, ' ');
System.out.println("Authenticated\n");
return true;
} else {
System.out.println("Authentication failed\n");
}
return false;
}
}