Java 中的模式分流()方法,示例

原文:https://www . geesforgeks . org/pattern-splitassstream-method-in-Java-with-examples/

splitassstream()一个模式类的方法,用于从给定的输入序列中返回一个字符串流,作为参数传递给这个模式的匹配项。如果这个模式不匹配输入的任何子序列,那么结果流只有一个元素,即字符串形式的输入序列。

语法:

public Stream<String> splitAsStream(CharSequence input)

参数:该方法接受单个参数字符序列,表示待拆分的字符序列。

返回值:该方法返回一个字符串流,该字符串流通过围绕该模式的匹配项分割输入来计算。

下面的程序说明了 splitAsStream()方法:

程序 1:

// Java program to demonstrate
// Pattern.splitAsStream(CharSequence input) method

import java.util.regex.*;
import java.util.stream.*;
public class GFG {
    public static void main(String[] args)
    {
        // create a REGEX String
        String REGEX = "geeks";

        // create the string
        // in which you want to search
        String actualString
            = "Welcome to geeks for geeks";

        // create a Pattern using REGEX
        Pattern pattern = Pattern.compile(REGEX);

        // split the text
        Stream<String> stream
            = pattern
                  .splitAsStream(actualString);

        // print array
        stream.forEach(System.out::println);
    }
}

输出:

Welcome to 
 for

程序二:

// Java program to demonstrate
// Pattern.splitAsStream(CharSequence input) method

import java.util.regex.*;
import java.util.stream.*;
public class GFG {
    public static void main(String[] args)
    {
        // create a REGEX String
        String REGEX = "ee";

        // create the string
        // in which you want to search
        String actualString
            = "aaeebbeecceeddee";

        // create a Pattern using REGEX
        Pattern pattern = Pattern.compile(REGEX);

        // split the text
        Stream<String> stream
            = pattern
                  .splitAsStream(actualString);

        // print array
        stream.forEach(System.out::println);
    }
}

输出:

aa
bb
cc
dd

参考:https://docs . Oracle . com/javase/10/docs/API/Java/util/regex/pattern . html # splitassstream(Java . lang . charsequence)