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Java把換行符空格置位符換成空字元

public class StringUtil{

public static String replaceWithBlank(String str){

Pattern p = Pattern.compile("\\s*|\t|\r|\n");

Matcher m = p.matcher(str);

String finishedReplaceStr = m.replaceAll("");

return finishedReplaceStr;

}

public static void main(String []msg){

String str = "Yeah,\n I win";

replaceWithBlank(str);

}