Java Language Tutorial => Indentation

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Example

Indentation level is four spaces.
Only space characters may be used for indentation. No tabs.
Empty lines must not be indented. (This is implied by the no trailing white space rule.)
case lines should be indented with four spaces, and statements within the case should be indented with another four spaces.

switch (var) {
    case TWO:
        setChoice("two");
        break;
    case THREE:
        setChoice("three");
        break;
    default:
        throw new IllegalArgumentException();
}

Refer to Wrapping statements for guidelines on how to indent continuation lines.

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