The method of cutting string JAVA

Cutting string methods:
If you want to cut the string at the specified tag divided into several segments, the method may be used:

• public String[] split(String regex)

• The cutter regex as markers, several string (array) returns after slicing
  return value is an array

• Note:
  Do not use a period as the English division mark.
  Because the English period expressions have special meanings in regular.
  The parameters regex is actually a regular expression.
  If you use the English period, the cut mark should use "\.".

public class Demo05StringSplit {
	public static void main(String[] args) {
		String str1 = "AAA,BBB,CCC";
		String[] array1 = str1.split(",");
		System.out.println("数组的长度"+array1.length);
		for(int i = 0;i<array1.length;i++) {
			System.out.println(array1[i]);
		}
		
		String str2 = "DDD.EEE.FFF";
		String[] array2 = str2.split("\\.");
		System.out.println("数组的长度"+array2.length);
		for(int i = 0;i<array2.length;i++) {
			System.out.println(array2[i]);
		}
	}
}