Cursor$DefaultCursor cannot be cast to java.lang.Boolean?

Question

Getting the error Exception in thread "main" java.lang.ClassCastException: com.rethinkdb.net.Cursor$DefaultCursor cannot be cast to java.lang.Boolean

// Login Validation
if (r.db("APSCI").table("BankAccounts").filter(row ->
   row.g("username").eq(username).and(row.g("password").eq(password))).run(conn)) {
   System.out.print("Welcome /n (username)");
}
else {
    System.out.print("No User Was Found!");
}

I'm trying to check if the username & password are valid against the user input from the scanner.

Answer 1

Don't know how the Java connector works, but you may find .coerceTo helpful:

r.db('APSCI').table('BankAccounts')
.getAll(username, {index: 'username'})
.filter({password: password})
.coerceTo('BOOL')

The result is true if the sequence is not empty, false otherwise.