Java Matcher useTransparentBounds(boolean)用法及代碼示例

Matcher類的useTransparentBounds(boolean)方法用於設置此匹配器的透明範圍。通過透明邊界，這意味著如果透明邊界設置為true，則匹配器將針對超出區域邊界的匹配模式進行匹配，以進行匹配。此方法返回具有修改後的透明邊界的Matcher。

用法:

public boolean useTransparentBounds(
               boolean setTransparentBounds)

參數：此方法采用參數setTransparentBounds，它是一個布爾值，描述了要修改為的此匹配器的透明範圍。

返回值：此方法返回具有修改後的透明邊界的Matcher。

下麵的示例說明Matcher.useTransparentBounds()方法：

示例1:

// Java code to illustrate useTransparentBounds() 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 transparent bounds to true 
        // using useTransparentBounds() method 
        matcher = matcher 
                      .useTransparentBounds(true); 
  
        // Check if this matcher 
        // has transparent bounds or not 
        System.out.println("Does this matcher"
                               + " has transparent bounds: "
                               + matcher.hasTransparentBounds()); 
    } 
}

輸出：

Does this matcher has transparent bounds: true

示例2:

// Java code to illustrate useTransparentBounds() 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 transparent bounds to true 
        // using useTransparentBounds() method 
        matcher = matcher 
                      .useTransparentBounds(false); 
  
        // Check if this matcher 
        // has transparent bounds or not 
        System.out.println("Does this matcher"
                               + " has transparent bounds: "
                               + matcher.hasTransparentBounds()); 
    } 
}

輸出：

Does this matcher has transparent bounds: false

參考： https://docs.oracle.com/javase/9/docs/api/java/util/regex/Matcher.html#useTransparentBounds-boolean-

相關用法

注：本文由純淨天空篩選整理自Kirti_Mangal大神的英文原創作品 Matcher useTransparentBounds(boolean) method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。