Create a substring im java code example

Example 1: how to substring in java

class scratch{
    public static void main(String[] args) {
        String hey = "Hello World";
        System.out.println( hey.substring(0, 5) );
        // prints Hello;
    }
}

Example 2: how to do substring java

class Main {
  public static void main (String[] args) {
    
    String str = "Hello World!";
    
    String firstWord = str.substring(0, 5);
    //two parameters are start and end index: (inclusive, non-inclusive)
    
    String secondWord = str.substring(6, 11);
    
    //firstWord has string "Hello"
    //secondWord has string "World"
  }
}