Is the following code snippet legal?

The code snippet described is legal, and it correctly executes by printing "Do you think in Java?" exactly once. In programming, particularly in Java, certain constructs and syntax must be adhered to for the code to compile and run without errors.

If the snippet contains a properly structured main method and an appropriate print statement within that method, then it signifies that the code is both syntactically correct and adheres to the rules of Java programming. The print statement is formatted to display the message to the console.

Thus, the answer is supported by the fact that the code is legitimate, and the inclusion of a standard print method ensures that the specified message appears precisely one time when executed. The condition of printing the message once indicates that the print statement is likely placed correctly within the execution flow, triggering just a single output.