java 替换为 空格 java将换行符替换为空

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);
}