Matcher.matcher()与Matcher.find()的区别

        Pattern pattern = Pattern.compile("abc");
        Matcher matcher = pattern.matcher("abcd");
        if(matcher.matches()){
            System.out.println("matcher.matches() == true");
        }else{
            System.out.println("matcher.matches() == false");
        }

        if(matcher.find()){
            System.out.println("matcher.find() == true");
        }else{
            System.out.println("matcher.find() == false");
        }


結果：
matcher.matches() == false
matcher.find() == true

        Pattern pattern = Pattern.compile("abcd");
        Matcher matcher = pattern.matcher("abcd");
        if(matcher.matches()){
            System.out.println("matcher.matches() == true");
        }else{
            System.out.println("matcher.matches() == false");
        }

        if(matcher.find()){
            System.out.println("matcher.find() == true");
        }else{
            System.out.println("matcher.find() == false");
        }


matcher.matches() == true
matcher.find() == false

结论：当正则完全匹配字符串，从头到尾正好匹配上字符串，matches()方法是true，find()方法为false

          当正则只能匹配字符串中的部分内容，matches()方法是fasle ,find()方法是true