Java 中 MatchResult end()方法，带示例
原文:https://www . geesforgeks . org/match result-end-method-in-Java-with-examples/
匹配结果界面的 end() 方法用于获取匹配结果中最后一个匹配字符后的偏移量。
语法:
public int end()
参数:该方法不取任何参数。
返回值:该方法返回最后一个匹配字符后的偏移量
异常:如果还没有尝试匹配，或者如果之前的匹配操作失败，此方法将抛出illegalstatexception。
以下示例说明了 MatchResult.end()方法:
例 1:
// Java code to illustrate end() method
import java.util.regex.*;
public class GFG {
public static void main(String[] args)
{
// Get the regex to be checked
String regex = "(G*s)";
// 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
MatchResult matcher
= pattern
.matcher(stringToBeMatched);
while (((Matcher)matcher).find()) {
// Get the last index of match result
System.out.println(matcher.end());
}
}
}
Output:
5
13
例 2:
// Java code to illustrate end() method
import java.util.regex.*;
public class GFG {
public static void main(String[] args)
{
// Get the regex to be checked
String regex = "(G*G)";
// Create a pattern from regex
Pattern pattern
= Pattern.compile(regex);
// Get the String to be matched
String stringToBeMatched
= "GFG FGF GFG";
// Create a matcher for the input String
MatchResult matcher
= pattern
.matcher(stringToBeMatched);
while (((Matcher)matcher).find()) {
// Get the last index of match result
System.out.println(matcher.end());
}
}
}
Output:
1
3
6
9
11
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