RegexSwitch.java

package regex;

import java.util.regex.Pattern;

public class RegexSwitch {
	enum RegexCase { 
		HELLO("Hello.*"),
		FOOD("x?Food$"),
		NOMATCH(null);
		
		private Pattern pattern;
		RegexCase(String regex) {
			this.pattern = regex == null ? null : Pattern.compile(regex);
		}
		
		public static RegexCase valueOfString(String s) {
			for (RegexCase r : RegexCase.values()) {
				if (r.pattern != null && r.pattern.matcher(s).matches()) {
					return r;
				}
			}
			return NOMATCH;
		}
	}
	
	
	public static void main(String[] args) {
		String input = "Hello World";
//		String input = "xFood";
		switch(RegexCase.valueOfString(input)) {
		case HELLO: System.out.println("Eingabe war Hello World"); break;
		case FOOD: System.out.println("Eingabe endet mit Food"); break;
		default: System.out.println("Unbekannte Eingabe");
		}
		
	}
}