Java中Matcher toString()方法的示例
该java.util.regex.Matcher中的类代表一个引擎，进行各种匹配操作。此类没有构造函数，可以使用matches()类java.util.regex.Pattern的方法创建/获取此类的对象。
Matcher类的toString()方法返回一个字符串值，该字符串值表示当前匹配器对象的内容。
例子1
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class ToStringExample {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter input text: ");
String input = sc.nextLine();
String regex = "[#%&*]";
//创建一个模式对象
Pattern pattern = Pattern.compile(regex);
//创建一个Matcher对象
Matcher matcher = pattern.matcher(input);
int count =0;
while(matcher.find()) {
count++;
}
//检索使用的模式
System.out.println("The are "+count+" special [# % & *] characters in the given text");
System.out.println("Following is the string format of the matcher used: \n"+matcher.toString());
}
}输出结果
Enter input text: Hello# How # are# you *& welcome to T#utorials%point The are 7 special [# % & *] characters in the given text Following is the string format of the matcher used: java.util.regex.Matcher[pattern=[#%&*] region=0,52 lastmatch=]
例子2
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class ToStringExample {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter input text: ");
String input = sc.nextLine();
String regex = "[#%&*]";
//创建一个模式对象
Pattern pattern = Pattern.compile(regex);
//创建一个Matcher对象
Matcher matcher = pattern.matcher(input);
int count =0;
while(matcher.find()) {
count++;
}
//检索使用的模式
System.out.println("The are "+count+" special [# % & *] characters in the given text");
System.out.println("Following is the string format of the matcher used: \n"+matcher.toString());
}
}输出结果
Enter input text: Hello# How # are# you *& welcome to T#utorials%point The are 7 special [# % & *] characters in the given text Following is the string format of the matcher used: java.util.regex.Matcher[pattern=[#%&*] region=0,52 lastmatch=]