Matcher类的reset(CharSequence输入)方法用于重置此匹配器,并将作为参数传递的输入String插入此匹配器。
用法:
public Matcher reset(CharSequence input)
参数:此方法采用参数输入,即重置后要插入匹配器中的字符串。
返回值:用此输入复位后,此方法返回此Matcher。
下面的示例说明Matcher.reset()方法:
示例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());
}
}
输出:
Current Matcher: java.util.regex.Matcher[pattern=Geeks region=0,13 lastmatch=]
Current Matcher after Reset: java.util.regex.Matcher[pattern=Geeks region=0,15 lastmatch=]
示例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());
}
}
输出:
Current Matcher: java.util.regex.Matcher[pattern=GFG region=0,19 lastmatch=]
Current Matcher after Reset: java.util.regex.Matcher[pattern=GFG region=0,23 lastmatch=]
参考: Oracle Doc
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注:本文由纯净天空筛选整理自Kirti_Mangal大神的英文原创作品 Matcher reset(CharSequence) method in Java with Examples。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。