您可以创建一个通用接口,并使用模式或任何其他您可能想要转换字符串的匿名实现:
interface StringProcessor {
String process(String source);
}
StringProcessor[] processors = new StringProcessor[] {
new StringProcessor() {
private final Pattern p = Pattern.compile("[0-9]+");
public String process(String source) {
String res = source;
if (p.matcher(source).find()) {
res = ... // delete
}
return res;
}
}
, new StringProcessor() {
private final Pattern p = Pattern.compile("[a-z]+");
public String process(String source) {
String res = source;
if (p.matcher(source).find()) {
res = ... // replace
}
return res;
}
}
, new StringProcessor() {
private final Pattern p = Pattern.compile("[%^#@]{2,5}");
public String process(String source) {
String res = source;
if (p.matcher(source).find()) {
res = ... // do whatever else
}
return res;
}
}
};
String res = "My starting string 123 and more 456";
for (StringProcessor p : processors) {
res = p.process(res);
}
请注意, 的实现StringProcessor.process
根本不需要使用正则表达式。底部的循环不知道正则表达式参与获取结果。