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Results for “Java”

Small, practical examples. Search by task or narrow things down below.

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JavaStream transformations

Find the first matching stream value

Java: Use findFirst and an explicit default for an empty result.

Java✓ Tested
JavaPrecise numeric calculations

Find the greatest common divisor

Java: BigInteger.gcd calculates an exact nonnegative common divisor.

Java✓ Tested
JavaDates & time zones

Find the last day of a month

Java: Use YearMonth so leap years and month lengths are handled by the calendar library.

Java✓ Tested
JavaDates & time zones

Find the next chosen weekday

Java: TemporalAdjusters.next excludes the starting day even if it already has that weekday.

Java✓ Tested
JavaScriptArray traversal & selection

Find the position of a matching item

JavaScript: findIndex returns -1 when the predicate matches nothing.

JavaScript✓ Tested
JavaGetting Started

Find what remains after division

Java: Use the remainder operator to count items left after forming complete groups.

Java✓ Tested
JavaScriptGetting Started

Find what remains after division

JavaScript: Use the remainder operator to count items left after forming complete groups.

JavaScript✓ Tested
JavaScriptArray restructuring

Flatten a single nesting level

JavaScript: flat defaults to a depth of one and creates a new array.

JavaScript✓ Tested
JavaStream transformations

Flatten nested collections

Java: Use flatMap to concatenate nested Java lists into one stream.

Java✓ Tested
JavaNumbers & dates

Format a decimal number

Format a Java decimal with two digits and a fixed locale.

Java✓ Tested
JavaScriptFiles & async

Format an ISO date

Format a UTC JavaScript Date deterministically.

JavaScript✓ Tested
JavaScriptUTC date operations

Format whole seconds as hours minutes and seconds

JavaScript: Use integer divisions and remainders for a nonnegative duration.

JavaScript✓ Tested