StringUtils.isNotBlank() VS StringUtils.isNotEmpty() in Java
See nice examle for StringUtils.isNotBlank() VS StringUtils.isNotEmpty() in Java
Hereย https://www.javavogue.com/2015/04/stringutilsisnotblank-vs-html/
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StringUtils.isNotBlank() VS StringUtils.isNotEmpty() in Java
See nice examle for StringUtils.isNotBlank() VS StringUtils.isNotEmpty() in Java
Hereย https://www.javavogue.com/2015/04/stringutilsisnotblank-vs-html/

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StringUtils examples
We may use String manipulations in most occasions, be it replace, concat. There is a utility class which includes most of the String operations and manipulations in commons-lang library. StringUtils Download StringUtils class comes as part of apache commons-lang library. Before using, this please include the jar in your classpath. You can download this fromโฆ
StringUtils examples was originally published on
Java split() ๋ฉ์๋ ์ฑ๋ฅ ๋น๊ต
split() ๋ฉ์๋ ์ฑ๋ฅ์ ๋น๊ตํ๋ ๋ธ๋ก๊ทธ ๊ธ(Guava Splitter vs StringUtils)์ ๋ณด๊ณ ๊ฐ๋จํ ํ ์คํธ ํ๋ก๊ทธ๋จ์ ์์ฑํด ๋ณด์๋ค. ์๋ ํ๋ก๊ทธ๋จ์ String.split(), StringUtils.split(), Guava Splitter.split() ๋ฉ์๋๋ฅผ ์ด์ฉํด ๋ฌธ์์ด์ ๊ณต๋ฐฑ์ผ๋ก ๋ถ๋ฆฌํ๊ณ ๋ฌธ์์ด ๊ธธ์ด๋ฅผ ํ์ธํ๋ค.
import com.google.common.base.Splitter; import org.apache.commons.lang.StringUtils; public class SplitPerformance { public Long[] doPerformanceTest(int repeatCount) { String log = "2013-03-19 10:00:06 10.1.1.60 - - - 10.2.1.213 80 GET " + "/images/400x280.jpg - 200 1 4008054 21400 - 1 " + "HTTP/1.1 image.unknown.net - - - 1 - 1 1 image/jpeg 1342 400 - - 1"; long before, after; before = System.currentTimeMillis(); for (int i = 0; i < repeatCount; ++i) { String[] logList = log.split(" "); for (String aLogList : logList) { int len = aLogList.length(); } } after = System.currentTimeMillis(); long stringSplit = after - before; before = System.currentTimeMillis(); for (int i = 0; i < repeatCount; ++i) { String[] logList = StringUtils.split(log); for (String aLogList : logList) { int len = aLogList.length(); } } after = System.currentTimeMillis(); long stringUtilsSplit = after - before; Splitter splitter = Splitter.on(" "); before = System.currentTimeMillis(); for (int i = 0; i < repeatCount; ++i) { Iterable<String> logIterator = splitter.split(log); for (String aLogList : logIterator) { int len = aLogList.length(); } } after = System.currentTimeMillis(); long guavaSplitterSplit = after - before; return new Long[] { stringSplit, stringUtilsSplit, guavaSplitterSplit }; } public void printResult(int repeatCount, Long[] results) { System.out.println( String.format("%d\t%d\t%d\t%d", repeatCount, results[0], results[1], results[2])); } public static void main(String[] args) { SplitPerformance splitPerformance = new SplitPerformance(); System.out.println("Repeat\tString.split()\tStringUtils.split()\tSplitter.split()"); for (int repeat = 10; repeat <= 10000000; repeat *= 10) { Long[] results = splitPerformance.doPerformanceTest(repeat); splitPerformance.printResult(repeat, results); } } }
์คํ ๊ฒฐ๊ณผ๋ ๋ค์๊ณผ ๊ฐ๋ค
Repeat String.split() StringUtils.split() Splitter.split() 10 3 7 2 100 13 7 12 1000 64 5 55 10000 128 23 30 100000 208 103 175 1000000 2111 979 2065 10000000 22318 10052 19357
์์์๋ถํฐ ์์๋๋ก String.split(), StringUtils.split(), Guava Splitter.split() ๋ฉ์๋ ์คํ ๊ฒฐ๊ณผ์ด๋ฉฐ, ์คํ ์๊ฐ์ ๋ํ๋ด๊ธฐ ๋๋ฌธ์ ์ซ์๊ฐ ์์ ์๋ก ์ข๋ค.
Splitter.split() ์คํ ๊ฒฐ๊ณผ๊ฐ ์๊ฐ๋ณด๋ค ๋๋ฆฌ๊ฒ ๋์๋๋ฐ, ์๋ฌด๋๋ Iterator ๋ฅผ ์ด์ฉํด ๋ฌธ์์ด์ ์ ๊ทผํ๊ธฐ ๋๋ฌธ์ด ์๋๊ฐ ์๊ฐ๋๋ค.