what does split do in java code example

Example 1: java split string

String yourString = "Hello/Test/World";
String[] strings = yourString.split("/" /*<- Regex */); 

Output:
strings = [Hello, Test, World]

Example 2: How to split a string in Java

String string = "004-034556";
String[] parts = string.split("-");
String part1 = parts[0]; // 004
String part2 = parts[1]; // 034556

Example 3: split on . in java

String textfile = "ReadMe.txt";
String filename = textfile.split(".")[0];
String extension = textfile.split(".")[1];

Example 4: split on . in java

String textfile = "ReadMe.txt";
String filename = textfile.split("\\.")[0];
String extension = textfile.split("\\.")[1];