Web Reference: Jan 11, 2011 · If the switch value (switch (variable)) can't reach the default case, then default case is not at all needed. Even if we keep the default case, it is not at all executed. Jan 16, 2026 · The default keyword in Java's switch statement is a powerful tool that provides a way to handle unexpected or unaccounted - for values. It can be used for error handling, providing default behavior, and enhancing the robustness of your code. Jan 16, 2026 · At first glance, the default clause— which executes when no other case matches—seems like a safety net. But is it always necessary? The answer depends on context: language design, code intent, and whether cases are "exhaustive" (i.e., cover all possible values the variable can take).
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