how to split a string on period in java

/**
 * @author lautturi.com 
 * Java example:
 */

import java.util.*;
import java.util.regex.Pattern;

public class Lautturi {
	public static void main(String[] args){
		
		String string = "hello.java.world.1234";
		String[] arr = string.split(Pattern.quote(".")); 
		// Or
		//String[] arr = string.split("\\."); 

		System.out.println(string);
		System.out.println(Arrays.toString(arr));
		for (String s : arr) 
            System.out.println(s); 
		
	}
}

output:

hello.java.world.1234
[hello, java, world, 1234]
hello
java
world
1234