Ternary operator to return value- Java/Android

You can do

return (usrname.equals(username) && passwd.equals(password) )?  true : false;

true and false can be replaced by any return value you want. If it is just boolean then you can avoid ternary operator altogether. Just do

return  (usrname.equals(username) && passwd.equals(password));

lets say I need

  (usrname.equals(u) && passwd.equals(p)) ? return "member" : return guest";

The correct syntax is:

   return (usrname.equals(u) && passwd.equals(p)) ? "member" : "guest";

The general form of the ternary operator is

   expression-1 ? expression-2 : expression-3

where expression-1 has type boolean, and expression-2 and expression-3 have the same type¹.

In your code, you were using return statements where expressions are required. In Java, a return statement is NOT a valid expression.

^{1 - This doesn't take account of the conversions that can take. For the full story, refer to the JLS.}

Having said that, the best way to write your example doesn't uses the conditional operator at all:

   return usrname.equals(username) && passwd.equals(password);

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