Java 模式匹配器：创建新的模式还是重置？

假设一个 ，它通过 Java 对象与大量字符串匹配：Regular ExpressionMatcher

String expression = ...; // The Regular Expression
Pattern pattern = Pattern.compile(expression);
String[] ALL_INPUT = ...; // The large number of strings to be matched

Matcher matcher; // Declare but not initialize a Matcher

for (String input:ALL_INPUT)
{
    matcher = pattern.matcher(input); // Create a new Matcher

    if (matcher.matches()) // Or whatever other matcher check
    {
         // Whatever processing
    }
}

在Java SE 6 JavaDoc for Matcher中，人们可以通过该方法找到重用同一对象的选项，正如源代码所示，这比每次都创建新的对象便宜一些，也就是说，与上面不同，可以这样做：Matcherreset(CharSequence)Matcher

String expression = ...; // The Regular Expression
Pattern pattern = Pattern.compile(expression);
String[] ALL_INPUT = ...; // The large number of strings to be matched

Matcher matcher = pattern.matcher(""); // Declare and initialize a matcher

for (String input:ALL_INPUT)
{
    matcher.reset(input); // Reuse the same matcher

    if (matcher.matches()) // Or whatever other matcher check
    {
         // Whatever processing
    }
}

应该使用上面的模式，还是应该更喜欢每次都初始化一个新对象？reset(CharSequence)Matcher