Java正则表达式搜索和替换 Java String length() 方法示例 Java String intern() 方法示例. Java正则表达式搜索和替换 import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexMatches { private static String REGEX = "dog"; private static String INPUT = "The dog says meow. " + "All dogs say meow."; private static String REPLACE = "cat"; public static void main(String[] args) { Pattern p = Pattern.compile(REGEX); //get a matcher object Matcher m = p.matcher(INPUT); INPUT = m.replaceAll(REPLACE); System.out.println(INPUT); } } Java String length() 方法示例 Java String intern() 方法示例.