删除字符串中的重复空格
import java.util.regex.Matcher;/** nowjava.com 提供 **/ import java.util.regex.Pattern; public class Main { // Returns a version of the input where all contiguous // whitespace characters are replaced with a single // space. Line terminators are treated like whitespace. public static CharSequence removeDuplicateWhitespace(CharSequence inputStr) { String patternStr = "\\s+"; String replaceStr = " "; Pattern pattern = Pattern.compile(patternStr); Matcher matcher = patte