以下程序演示如何使用util.regex.Pattern的 matcher.appendReplacement(StringBuilder builder, String stringToBeReplaced) 方法删除空格类。 Java实现 // Java program to remove the whiltespaces // in a string using Java Regex importjava.util.regex.Matcher; importjava.util.regex.Pattern; classGFG{ publicstati...
// characters from a string classGFG{ // Function to remove non-alphanumeric // characters from string publicstaticString removeNonAlphanumeric(Stringstr) { // replace the given string // with empty string // except the pattern "[^a-zA-Z0-9]" str=str.replaceAll( "[^a-zA-Z0-9]","...