Java Matcher find()用法及代碼示例

Matcher類的find()方法嘗試查找找到模式的輸入序列的下一個子序列。它返回一個顯示相同值的布爾值。

用法:

public boolean find()

參數：此方法不帶任何參數。

返回值：此方法返回一個布爾值，該值顯示輸入序列的子序列是否找到此匹配器的模式

下麵的示例說明Matcher.find()方法：

示例1:

// Java code to illustrate find() 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 subsequence 
        // using find() method 
        System.out.println(matcher.find()); 
    } 
}

輸出：

true

示例2:

// Java code to illustrate find() 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 subsequence 
        // using find() method 
        System.out.println(matcher.find()); 
    } 
}

輸出：

true

參考： Oracle Doc

相關用法

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