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Editorial Team
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Asked: 2026-05-13T10:48:19+00:00

How do I write a code that loops while the LEFT or RIGHT arrow

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How do I write a code that loops while the LEFT or RIGHT arrow key is pressed?

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  1. Editorial Team

    Add a KeyListener to your swing component (assuming you’re using swing), and mark the keyDown and keyUp event. Specifically, on keyDown set a boolean for movingLeft, and on keyUp unset the boolean.

    A better solution might be to use a map of enumerations of directions to booleans, to make the code cleaner.

    Example:

    Map<MoveDirection, Boolean> moveMap = new HashMap<MoveDirection,Boolean>();
moveMap.put( MoveDirection.LEFT, false );
moveMap.put( MoveDirection.RIGHT, false );
moveMap.put( MoveDirection.UP, false );
moveMap.put( MoveDirection.DOWN, false );

    Then put and get as necessary.

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