Java 中的匹配器重置(CharSequence)方法，示例
原文:https://www . geesforgeks . org/matcher-resetcharsequence-method-in-Java-with-examples/
匹配器类的重置(字符序列输入)方法用于重置该匹配器，并将作为参数传递的输入字符串插入该匹配器。
语法:
public Matcher reset(CharSequence input)
参数:该方法取参数输入，即复位后要插入匹配器的字符串。
返回值:此方法用此输入复位后返回此匹配器。
以下示例说明了 Matcher.reset()方法:
例 1:
// Java code to illustrate reset() method
import java.util.regex.*;
public class GFG {
public static void main(String[] args)
{
// Get the regex to be checked
String regex = "Geeks";
// Create a pattern from regex
Pattern pattern
= Pattern.compile(regex);
// Get the String to be matched
String stringToBeMatched = "GeeksForGeeks";
// Create a matcher for the input String
Matcher matcher
= pattern
.matcher(stringToBeMatched);
// Get the current matcher state
System.out.println("Current Matcher: "
+ matcher.toMatchResult());
// Reset the Matcher using reset() method
String newStringToBeMatched
= "GeeksGeeksGeeks";
matcher = matcher
.reset(newStringToBeMatched);
// Get the current matcher state
System.out.println("Current Matcher after Reset: "
+ matcher.toMatchResult());
}
}
Output:
Current Matcher:Java . util . regex . Matcher[pattern = Geeks region = 0，13 last match =] Reset 后的 Current Matcher:Java . util . regex . Matcher[pattern = Geeks region = 0，15 lastmatch=]
例 2:
// Java code to illustrate reset() method
import java.util.regex.*;
public class GFG {
public static void main(String[] args)
{
// Get the regex to be checked
String regex = "GFG";
// Create a pattern from regex
Pattern pattern = Pattern.compile(regex);
// Get the String to be matched
String stringToBeMatched
= "GFGFGFGFGFGFGFGFGFG";
// Create a matcher for the input String
Matcher matcher
= pattern
.matcher(stringToBeMatched);
// Get the current matcher state
System.out.println("Current Matcher: "
+ matcher.toMatchResult());
// Reset the Matcher using reset() method
String newStringToBeMatched
= "GFG means GeeksForGeeks";
matcher = matcher
.reset(newStringToBeMatched);
// Get the current matcher state
System.out.println("Current Matcher after Reset: "
+ matcher.toMatchResult());
}
}
Output:
当前匹配器:Java . util . regex . Matcher[模式=GFG 区域=0，19 lastmatch=] 重置后的当前匹配器:Java . util . regex . Matcher[模式=GFG 区域=0，23 lastmatch=]
参考: 甲骨文文档
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