Java 中的 Pattern splitAsStream() 方法与示例
java.util.regex 包中的 Pattern 类是正则表达式的编译表示。
此类中的 splitAsStream() 方法接受 CharSequence 对象,将输入字符串表示为参数,并且在每次匹配时,它将给定的字符串拆分为新的子字符串,并将结果作为包含所有子字符串的流返回。
示例
import java.util.regex.Pattern; import java.util.stream.Stream; public class SplitAsStreamMethodExample { public static void main( String args[] ) { //Regular expression to find digits String regex = "(\s)(\d)(\s)"; String input = " 1 Name:Radha, age:25 2 Name:Ramu, age:32" + " 3 Name:Rajeev, age:45 4 Name:Raghu, age:35" + " 5 Name:Rahman, age:30"; //Compiling the regular expression Pattern pattern = Pattern.compile(regex); //verifying whether match occurred if(pattern.matcher(input).find()) System.out.println("Given String contains digits"); else System.out.println("Given String does not contain digits"); //Splitting the string Stream<String> stream = pattern.splitAsStream(input); Object obj[] = stream.toArray(); for(int i=0; i< obj.length; i++) { System.out.println(obj[i]); } } }
输出
Given String contains digits Name:Radha, age:25 Name:Ramu, age:32 Name:Rajeev, age:45 Name:Raghu, age:35 Name:Rahman, age:30
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