In Java, make a GUI that will accept a non$-$negative number and

display the Collatz problem $(3N+1)$ beginning from the entered

number. The GUI should count and show the number of integers in the sequence.

Collatz problem:

If $N$ is an even number, then divide $N$ by two.

If $N$ is an odd number, then multiply $N$ by $3$ and add $1.$

Continue to generate numbers in this way until $N$ becomes equal to $1.$