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;
    }
}

Java substring

// Suppose we want the first 4 chars of str
String a = str.substring(0, 4);

Source: codingbat.com

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