Apache Common Lang의 StringUtils 예제

Apache Common Lang의 StringUtils 메소드를 많이 활용하는 부분을 작성.

import org.apache.commons.lang3.StringUtils;

import org.junit.Assert;

import org.junit.Test;

public class StringUtilsTest {

@Test

public void test() {

Assert.assertEquals("", StringUtils.EMPTY);

Assert.assertEquals(-1, StringUtils.INDEX_NOT_FOUND);

String string = "";

Assert.assertSame(true, StringUtils.isEmpty(string));

String ironman="This is a Iron man";

Assert.assertEquals("This is...", StringUtils.abbreviate(ironman, 10));

Assert.assertEquals(" 2", StringUtils.leftPad("2", 2));

Assert.assertEquals("02", StringUtils.leftPad("2", 2, "0"));

Assert.assertEquals(true, StringUtils.isBlank(""));

Assert.assertEquals(true, StringUtils.isBlank(null));

Assert.assertEquals(true, StringUtils.isEmpty(""));

Assert.assertEquals(true, StringUtils.isEmpty(null));

Assert.assertEquals(false, StringUtils.isNotEmpty(""));

Assert.assertEquals(true, StringUtils.isNotEmpty("1111"));

String[] split = StringUtils.split("000_111_AA_222_333", "_");

Assert.assertEquals("000111AA222333", split[0]+split[1]+split[2]+split[3]+split[4]);

String test = "Test";

StringUtils.equals("Test", test);

Assert.assertEquals(2, StringUtils.countMatches("/aaa/bbb", "/"));

Assert.assertEquals("AAABBB", StringUtils.join("AAA", "BBB"));

String[] array = new String[]{ "LA", "Seattle", "SanJose"};

Assert.assertEquals("LA,Seattle,SanJose", StringUtils.join(array, ","));

Assert.assertEquals(true, StringUtils.startsWith("https://www.google.com", "https://"));

Assert.assertEquals(true, StringUtils.endsWith("https://www.google.com", ".com"));

Assert.assertEquals("st", StringUtils.left("string", 2));

Assert.assertEquals("ing", StringUtils.right("string", 3));

Assert.assertEquals("A-Z", StringUtils.upperCase("a-z"));

Assert.assertEquals("A-z", StringUtils.capitalize("a-z"));

Assert.assertEquals("a-z", StringUtils.lowerCase("A-Z"));

Assert.assertEquals(true, StringUtils.isNumeric("11"));

Assert.assertEquals(true, StringUtils.isAlphanumeric("11"));

Assert.assertEquals(true, StringUtils.isAlpha("aa"));

Assert.assertEquals("AAA", StringUtils.defaultString("AAA"));

Assert.assertEquals("", StringUtils.defaultString(""));

Assert.assertEquals("", StringUtils.defaultString(null));

Assert.assertEquals(6, StringUtils.length("string"));

Assert.assertEquals("fter", StringUtils.substringAfter("after", "a"));

Assert.assertEquals("abc@google.com", StringUtils.trim((" abc@google.com ")));

Assert.assertEquals("google", StringUtils.deleteWhitespace(" goo gle "));

Assert.assertEquals("msle", StringUtils.replace("google", "goog", "ms"));

Assert.assertEquals("bbb", StringUtils.defaultIfBlank("", "bbb"));

Assert.assertEquals(4, StringUtils.indexOfAny("google", new String[] { "le", "ms" }));

Assert.assertEquals(1, StringUtils.indexOfAny("google", new char[] { 'o', 'l' }));

Assert.assertEquals("ass", StringUtils.substringAfterLast("gooogle-glass", "gl"));

Assert.assertEquals("0820", StringUtils.center("82", 4, '0'));

Assert.assertEquals("leass", StringUtils.difference("google", "gleass"));

                 Assert.assertEquals("Google <--> Google <--> Google" , StringUtils.repeat("Google", " <--> ", 3));

                 Assert.assertEquals("Google", StringUtils.removeEnd("Googled", "d"));

                 Assert.assertEquals("Google", StringUtils.chomp("Google\r\n"));

}

}