java中用正则表达式去掉 换行、制表、空格、回车

String executOpinion ="dsfsdfasdfsdf\r\n dsfasdf dsfa dsf \t"   //要去掉空格换行制表回车空格

Pattern pattern =Pattern.compile("\\s*|\t|\r|\n");  
Matcher m =pattern.matcher(executOpinion);
executOpinion=m.replaceAll("");