I applied following codes to change my Computer password but it didn't work:
public static void main(String[] args) throws IOException {
Runtime.getRuntime().exec("net user admin password");
}
I applied this "net user admin password" in command prompt as administrator and it worked. I think i need administrator permission to successfully run this code.Please give me solution in step by step and in details Because I'm not so good.Thanks in advance.
Quoting from microsoft documents:
To change a user's password at the command prompt, log on as an administrator and type: net user user_name * /domain
So you should run your program as administrator or have logged in as an administrator already.
Note that there is a high restriction on the user type to perform this very critical command cause you can change (or set) a password without typing the old one!!
Non-administrators receive a "System error 5 has occurred. Access is denied" error message when they attempt to change the password.
Note: As Stephen C. said you can run your command with runas instead of run but it requires to enter the password (not in the command line though) so I suggest you to run a batch file instead and run a elevated shortcut inside it, for more details look at this.
According to the answers to "java-running executable with admin privilege", the solution is to use the runas command to run the net command with elevated privilege; i.e. something like this:
Runtime.getRuntime().exec("runas net user admin password");
The Microsoft documentation for runas is here.
This should only work from an admin user account.
