DecimalFormat Optional Decimals

Use DecimalFormat with the pattern '0.##' to format a decimal, removing unnecessary trailing zeros.

In DecimalFormat patterns, '#' shows a digit only when non-zero, so trailing zeros are dropped. '0.##' allows up to 2 decimal places but hides trailing zeros (12.500 becomes '12.5').

⚠️ AUTO-INPUT MODE: The input stream will automatically contain '12.500\n'. Use Scanner's nextDouble() to read it.

Expected Output:

Value: 12.5↵

= newline. The output ends with a newline — print one after the last line.

Hints4 available

Topics:

Miscellaneous

Code Editor

Tab to indent (Esc then Tab to move on) · Ctrl+Enter to run · Shift+Alt+F to format · Ctrl+Space to expand shortcuts (sysout, psvm, fori)

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