public abstract class Node{
	public boolean isRegexMatch(String regex, String value){
		Pattern pattern = Pattern.compile(regex);
		Matcher matcher = pattern.matcher(value);
		return matcher.find();
	}
}

ATD Node extends Node

public class CompositeActorRole extends ATDNode{
	public void setName(String name){
		if(isRegexMatch("^[A-z]+[A-Za-z0-9]*$", name)){
			this.name = name;
		}
	}
}

===
Test method
	@Test
	public void testName(){
		assertFalse(testName("5NumberFirst"));
		assertFalse("NonAlphabeticChar is Possible", testName("NonAlphabeticChar@"));
		assertFalse("NonAlphabeticChar is Possible", testName("NonAlphabeticChar^"));
		assertTrue(testName("AlphabeticCharFirst12"));
		assertFalse(testName(""));
	}
	
	private boolean testName(String newName){
		car1.setName(newName);
		return newName.equals(car1.getName());
	}