Handling Invalid Input in Rock Paper Scissors Game

General Discussions
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When you’re handling invalid user input in your rock paper scissors java game, the simplest approach would be to check if the input is one of the valid moves before proceeding with the game logic. You can use an if-condition like this:

if (!personPlay.equals("R") && !personPlay.equals("P") && !personPlay.equals("S")) {
    System.out.println("Invalid move. Try again.");
} else {
    // Continue with the game logic
}

This ensures that if the user enters an invalid character (say, “Q”), they’ll be told to try again. It’s a good starting point for beginners.