java去除字符串中的空格、回车、换行符、制表符,本方法采用的是java的正则表达式public class StringUtil { public static void replaceBlank() { Pattern p = Pattern.compile(\\s*|\t|\r|\n); String str="I am a, I am Hello ok, \n new line ffdsa!"; System.out.println("before:"+str); Matcher m = p.matcher(str); String after = m.replaceAll(""); System.out.println("after:"+after); }
public static void main(String[] args) { replaceBlank(); }}
public static void replaceBlank()
{
Pattern p = Pattern.compile(\\s*|\t|\r|\n);
String str="I am a, I am Hello ok, \n new line ffdsa!";
System.out.println("before:"+str);
Matcher m = p.matcher(str);
String after = m.replaceAll("");
System.out.println("after:"+after);
}
public static void main(String[] args) {
replaceBlank();
}}
\n换行符
String.replaceAll("\r","");