java.util.regex.Pattern.matches()方法匹配正则表达式和给定的输入。它有两个参数,即正则表达式和输入。如果正则表达式和输入匹配,则返回true,否则返回false。
给出了一个演示Java正则表达式中的Pattern.matches()方法的程序,如下所示:
示例import java.util.regex.Pattern;
public class Demo {
public static void main(String args[]) {
String regex = "a*b";
String input = "aaab";
System.out.println("Regex: " + regex);
System.out.println("Input: " + input);
boolean match = Pattern.matches(regex, input);
System.out.println("nDoes the regex match with the input? " + match);
}
}
输出结果Regex: a*b
Input: aaab
Does the regex match with the input? true
现在让我们了解上面的程序。
正则表达式和输入值被打印出来。然后,Pattern.matches()方法匹配正则表达式和给定的输入,并打印结果。演示此代码段如下:String regex = "a*b";
String input = "aaab";
System.out.println("Regex: " + regex);
System.out.println("Input: " + input);
boolean match = Pattern.matches(regex, input);
System.out.println("nDoes the regex match with the input? " + match);