java正则中的requireEnd和hitEnd

package test;

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

public class main
{

    // hitEnd(),结果为true,末尾输入更多数据,是否改变匹配结果 1.true变false 2.false变true 3.匹配文本变化
    // 返回false,匹配结果已经确定,包括为本确定
    // requireEnd(),只有匹配成功有意义,为true,表示更多输入数据可能会导致失败,false 输入更多,可能改变匹配文本,但不会失败
    public static void main(String[] args)
    {
        String[] matcherStrs =
        { "1234", "1234.>.567", ">", ">.567", ">=", ">=.567", "oops" };
        Pattern pattern = Pattern.compile("\\d+\\b|[><]=?");
        Matcher m = null;
        for (String matcherStr : matcherStrs)
        {
            m = pattern.matcher(matcherStr);
            boolean find_result = true;
            if (find_result = m.find())
            {
                System.out.println(String.format("正则是%s,匹配文本是%s,匹配是否成功:%s,匹配结果是%s", m.pattern(), matcherStr,
                        find_result, find_result ? m.group() : "匹配失败"));
                System.out.println("hitEnd() is " + m.hitEnd());
                System.out.println("requireEnd() is " + m.requireEnd());

            }
        }

    }
}