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Encouraging you (and showing you how) to think through solving this yourself.

Problem statement: It (the second loop) works the first time but when it comes to that point again after looping it...

You're being a bit dense. I told you that a nextLine() was required after collecting numeric input because nextInt(), nextDouble(), etc. leave a linefeed in the input buffer. In the case shown,...

Because of this:

paid = scan.nextLine();
scan.nextLine();

The nextLine() method will wait until the buffer contains a linefeed. You have two of them in a row, so two <returns> are required.

If you're asking for help by this statement, please post your latest code, and, as appropriate, a sample run that shows problems/undesirable behavior, current issues, specific questions, and any...

Again, take a breath, read the error, look at the code it is pointing at, and take a moment to think.

A few thoughts should occur to you: '=' is the assignment operator, '==' is the comparison...

You need to think these things through a bit more and thoughtfully TRY things. You're getting frustrated and giving up too early.

Your current construction is:

if ( yes )

if ( no )

else...

if ( thisString.equals( thatString ) )

Are you using the comparison operator, '==', instead of the equals() method to compare Strings?

Essentially, yes. If you've gotten the desired data, as in:

double neededData = input.nextDouble();

you can "flush the buffer" immediately afterwards with

input.nextLine();

If there are...

Scanning for a specific token, usually a numeric value like int, double, etc., does not capture and clear the linefeed character in the input buffer. If that Scanner statement is followed by one...

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