METÓDA JAVA STRING TOLOWERCASE().

The java string toLowerCase() metóda vráti reťazec malými písmenami. Inými slovami, konvertuje všetky znaky reťazca na malé písmená.

Metóda toLowerCase() funguje rovnako ako metóda toLowerCase(Locale.getDefault()). Interne používa predvolené miestne nastavenie.

Interná implementácia

 public String toLowerCase(Locale locale) { if (locale == null) { throw new NullPointerException(); } int firstUpper; final int len = value.length; /* Now check if there are any characters that need to be changed. */ scan: { for (firstUpper = 0 ; firstUpper = Character.MIN_HIGH_SURROGATE) &amp;&amp; (c <= character.max_high_surrogate)) { int supplchar="codePointAt(firstUpper);" if (supplchar !="Character.toLowerCase(supplChar))" break scan; } firstupper +="Character.charCount(supplChar);" else (c firstupper++; return this; char[] result="new" char[len]; resultoffset="0;" * may grow, so i+resultoffset is the write location in just copy first few lowercase characters. system.arraycopy(value, 0, result, firstupper); string lang="locale.getLanguage();" boolean localedependent="(lang" =="tr" || 'az' 'lt'); lowerchararray; lowerchar; srcchar; srccount; for (int i="firstUpper;" <len; srcchar="(int)value[i];" ((char)srcchar>= Character.MIN_HIGH_SURROGATE &amp;&amp; (char)srcChar <= character.max_high_surrogate) { srcchar="codePointAt(i);" srccount="Character.charCount(srcChar);" } else if (localedependent || 'u03a3') greek capital letter sigma lowerchar="ConditionalSpecialCasing.toLowerCaseEx(this," i, locale); (srcchar="=" 'u0130') latin i dot ((lowerchar="=" character.error) (lowerchar>= Character.MIN_SUPPLEMENTARY_CODE_POINT)) { if (lowerChar == Character.ERROR) { if (!localeDependent &amp;&amp; srcChar == &apos;u0130&apos;) { lowerCharArray = ConditionalSpecialCasing.toLowerCaseCharArray(this, i, Locale.ENGLISH); } else { lowerCharArray = ConditionalSpecialCasing.toLowerCaseCharArray(this, i, locale); } } else if (srcCount == 2) { resultOffset += Character.toChars(lowerChar, result, i + resultOffset) - srcCount; continue; } else { lowerCharArray = Character.toChars(lowerChar); } /* Grow result if needed */ int mapLen = lowerCharArray.length; if (mapLen &gt; srcCount) { char[] result2 = new char[result.length + mapLen - srcCount]; System.arraycopy(result, 0, result2, 0, i + resultOffset); result = result2; } for (int x = 0; x <maplen; ++x) { result[i + resultoffset x]="lowerCharArray[x];" } - srccount); else resultoffset]="(char)lowerChar;" return new string(result, 0, len resultoffset); < pre> <h3>Signature</h3> <p>There are two variant of toLowerCase() method. The signature or syntax of string toLowerCase() method is given below:</p> <pre> public String toLowerCase() public String toLowerCase(Locale locale) </pre> <p>The second method variant of toLowerCase(), converts all the characters into lowercase using the rules of given Locale.</p> <hr> <h3>Returns</h3> <p>string in lowercase letter.</p> <hr> <h2>Java String toLowerCase() method example</h2> <pre> public class StringLowerExample{ public static void main(String args[]){ String s1=&apos;JAVATPOINT HELLO stRIng&apos;; String s1lower=s1.toLowerCase(); System.out.println(s1lower); }} </pre> <span> Test it Now </span> <p>Output:</p> <pre> javatpoint hello string </pre> <h2>Java String toLowerCase(Locale locale) Method Example 2</h2> <p>This method allows us to pass locale too for the various langauges. Let&apos;s see an example below where we are getting string in english and turkish both.</p> <pre> import java.util.Locale; public class StringLowerExample2 { public static void main(String[] args) { String s = &apos;JAVATPOINT HELLO stRIng&apos;; String eng = s.toLowerCase(Locale.ENGLISH); System.out.println(eng); String turkish = s.toLowerCase(Locale.forLanguageTag(&apos;tr&apos;)); // It shows i without dot System.out.println(turkish); } } </pre> <p>Output:</p> <pre> javatpoint hello string javatpo?nt hello str?ng </pre></maplen;></=></=>

Druhý variant metódy toLowerCase() konvertuje všetky znaky na malé písmená pomocou pravidiel daného Locale.

Návraty

reťazec malým písmenom.

Príklad metódy Java String toLowerCase().

 public class StringLowerExample{ public static void main(String args[]){ String s1=&apos;JAVATPOINT HELLO stRIng&apos;; String s1lower=s1.toLowerCase(); System.out.println(s1lower); }}

Vyskúšajte to

Výkon:

 javatpoint hello string

Príklad metódy Java String toLowerCase(Locale locale) 2

Táto metóda nám umožňuje odovzdať aj miestne nastavenia pre rôzne jazyky. Pozrime sa na príklad nižšie, kde dostaneme reťazec v angličtine aj turečtine.

 import java.util.Locale; public class StringLowerExample2 { public static void main(String[] args) { String s = &apos;JAVATPOINT HELLO stRIng&apos;; String eng = s.toLowerCase(Locale.ENGLISH); System.out.println(eng); String turkish = s.toLowerCase(Locale.forLanguageTag(&apos;tr&apos;)); // It shows i without dot System.out.println(turkish); } }

Výkon:

 javatpoint hello string javatpo?nt hello str?ng