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()); }
} }
}