匹配器使用 Java 中的 nchoringBounds(布尔)方法，示例
原文:https://www . geeksforgeeks . org/matcher-useanchoringboundsboondo-method-in-Java-with-examples/
使用匹配器类的方法来设置该匹配器的锚定边界。通过锚定边界，这意味着匹配者将匹配像^这样的锚，如果锚定边界设置为真，匹配者将获得$ 1。此方法返回一个具有修改的锚定边界的匹配器。
语法:
public boolean useAnchoringBounds(
boolean setAnchoringBounds)
参数:该方法采用参数设置锚定边界，这是一个布尔值，描述了要修改的匹配器的锚定边界。
返回值:该方法返回一个锚定边界修改后的匹配器。
下面的例子说明了 Matcher.useAnchoringBounds()方法:
例 1:
// Java code to illustrate useAnchoringBounds() 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 Geeks for For Geeks Geek";
// Create a matcher for the input String
Matcher matcher
= pattern.matcher(stringToBeMatched);
// set the anchoring bounds to true
// using useAnchoringBounds() method
matcher = matcher
.useAnchoringBounds(true);
// Check if this matcher has anchoring bounds or not
System.out.println("Does this matcher"
+ " has anchoring bounds: "
+ matcher.hasAnchoringBounds());
}
}
输出:
Does this matcher has anchoring bounds: true
例 2:
// Java code to illustrate useAnchoringBounds() method
import java.util.regex.*;
public class GFG {
public static void main(String[] args)
{
// Get the regex to be checked
String regex = "(FGF)";
// Create a pattern from regex
Pattern pattern
= Pattern.compile(regex);
// Get the String to be matched
String stringToBeMatched
= "FGF GFG GFG FGF";
// Create a matcher for the input String
Matcher matcher
= pattern.matcher(stringToBeMatched);
// set the anchoring bounds to true
// using useAnchoringBounds() method
matcher = matcher
.useAnchoringBounds(false);
// Check if this matcher has anchoring bounds or not
System.out.println("Does this matcher"
+ " has anchoring bounds: "
+ matcher.hasAnchoringBounds());
}
}
输出:
Does this matcher has anchoring bounds: false
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