The java string split() metoda împarte acest șir față de expresia regulată dată și returnează o matrice char.
Implementare internă
public String[] split(String regex, int limit) { /* fastpath if the regex is a (1)one-char String and this character is not one of the RegEx's meta characters '.$|()[{^?*+\', or (2)two-char String and the first char is the backslash and the second is not the ascii digit or ascii letter. */ char ch = 0; if (((regex.value.length == 1 && '.$|()[{^?*+\'.indexOf(ch = regex.charAt(0)) == -1) || (regex.length() == 2 && regex.charAt(0) == '\' && (((ch = regex.charAt(1))-'0')|('9'-ch)) <0 0 && ((ch-'a')|('z'-ch)) < 0)) (ch character.max_low_surrogate)) { int off="0;" next="0;" boolean limited="limit"> 0; ArrayList list = new ArrayList(); while ((next = indexOf(ch, off)) != -1) { if (!limited || list.size() <limit 0 - 1) { list.add(substring(off, next)); off="next" + 1; } else last one assert (list.size()="=" limit 1); value.length)); break; if no match was found, return this (off="=" 0) new string[]{this}; add remaining segment (!limited || list.size() && list.get(resultsize 1).length()="=" resultsize--; string[] result="new" string[resultsize]; list.sublist(0, resultsize).toarray(result); pattern.compile(regex).split(this, limit); < pre> <hr> <h3>Signature</h3> <p>There are two signature for split() method in java string.</p> <pre> public String split(String regex) and, public String split(String regex, int limit) </pre> <hr> <h3>Parameter</h3> <p> <b>regex</b> : regular expression to be applied on string.</p> <p> <b>limit</b> : limit for the number of strings in array. If it is zero, it will returns all the strings matching regex.</p> <hr> <h3>Returns</h3> <p>array of strings</p> <hr> <h3>Throws</h3> <p> <b>PatternSyntaxException</b> if pattern for regular expression is invalid</p> <hr> <h3>Since</h3> <p>1.4</p> <hr> <h2>Java String split() method example</h2> <p>The given example returns total number of words in a string excluding space only. It also includes special characters.</p> <pre> public class SplitExample{ public static void main(String args[]){ String s1='java string split method by javatpoint'; String[] words=s1.split('\s');//splits the string based on whitespace //using java foreach loop to print elements of string array for(String w:words){ System.out.println(w); } }} </pre> <span> Test it Now </span> <pre> java string split method by javatpoint </pre> <hr> <h2>Java String split() method with regex and length example</h2> <pre> public class SplitExample2{ public static void main(String args[]){ String s1='welcome to split world'; System.out.println('returning words:'); for(String w:s1.split('\s',0)){ System.out.println(w); } System.out.println('returning words:'); for(String w:s1.split('\s',1)){ System.out.println(w); } System.out.println('returning words:'); for(String w:s1.split('\s',2)){ System.out.println(w); } }} </pre> <span> Test it Now </span> <pre> returning words: welcome to split world returning words: welcome to split world returning words: welcome to split world </pre> <h2>Java String split() method with regex and length example 2</h2> <p>Here, we are passing split limit as a second argument to this function. This limits the number of splitted strings.</p> <pre> public class SplitExample3 { public static void main(String[] args) { String str = 'Javatpointtt'; System.out.println('Returning words:'); String[] arr = str.split('t', 0); for (String w : arr) { System.out.println(w); } System.out.println('Split array length: '+arr.length); } } </pre> <pre> Returning words: Java poin Split array length: 2 </pre></limit></0> Parametru
regex : expresie regulată care trebuie aplicată pe șir.
limită : limită pentru numărul de șiruri din matrice. Dacă este zero, va returna toate șirurile care se potrivesc cu expresia regex.
Se intoarce
matrice de șiruri
Aruncări
PatternSyntaxException dacă modelul pentru expresia regulată este invalid
De cand
1.4
Exemplu de metodă Java String split().
Exemplul dat returnează numărul total de cuvinte dintr-un șir, excluzând doar spațiul. Include și personaje speciale.
public class SplitExample{ public static void main(String args[]){ String s1='java string split method by javatpoint'; String[] words=s1.split('\s');//splits the string based on whitespace //using java foreach loop to print elements of string array for(String w:words){ System.out.println(w); } }} Testează-l acum java string split method by javatpoint
Metoda Java String split() cu exemplu regex și lungime
public class SplitExample2{ public static void main(String args[]){ String s1='welcome to split world'; System.out.println('returning words:'); for(String w:s1.split('\s',0)){ System.out.println(w); } System.out.println('returning words:'); for(String w:s1.split('\s',1)){ System.out.println(w); } System.out.println('returning words:'); for(String w:s1.split('\s',2)){ System.out.println(w); } }} Testează-l acum returning words: welcome to split world returning words: welcome to split world returning words: welcome to split world
Metoda Java String split() cu regex și lungime exemplu 2
Aici, trecem limita de divizare ca al doilea argument pentru această funcție. Acest lucru limitează numărul de șiruri împărțite.
public class SplitExample3 { public static void main(String[] args) { String str = 'Javatpointtt'; System.out.println('Returning words:'); String[] arr = str.split('t', 0); for (String w : arr) { System.out.println(w); } System.out.println('Split array length: '+arr.length); } } Returning words: Java poin Split array length: 2