java:Pattern和Matcher的概述

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import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Demo8_Pattern {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		 Pattern p = Pattern.compile("a*b");//获取到正则表达式
		 Matcher m = p.matcher("aaaaab");//-获取匹配器
		 boolean b = m.matches();//匹配字符串，看是否匹配的上，匹配就返回true
		 System.out.println(b);
		 
		 
		 System.out.println("aaaaab".matches("a*b"));//与上面的结果一样

	}

}