public static void main(String[] args) {
String aa = "qwzhongqianQwhahaQWhahaqwhahQW";
String bb = "a aa aaaa bbbb ccccc ddd ";
System.out.println(aa.replaceAll("( i)qw", "&"));
String[] strArray = bb.split("\\s++");
for (String s: strArray) {
System.out.println(s);
}
运行结果：
