Click here to watch in Youtube :
https://www.youtube.com/watch?v=yH3dqWFZ5WI&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge

Java Tutorial : Java StringBuilder [subSequence(int start, int end) method]

Java Tutorial : Java StringBuilder [subSequence(int start, int end) method]

Java Tutorial : Java StringBuilder [subSequence(int start, int end) method]

SubSequenceDemo.java

/*
 * public CharSequence subSequence(int start, int end)
 * 
 * Parameters: 
 * ---------- 
 * start - the start index,inclusive.
 *  
 * end - the end index, exclusive.
 * 
 * Returns: 
 * ------- 
 * the specified subsequence.
 * 
 * Throws: 
 * ------ 
 * IndexOutOfBoundsException - if start or end 
 * are negative, if end is greater than length(),
 * or if start is greater than end.
 */
public class SubSequenceDemo
{

    public static void main(String[] args)
    {
        StringBuilder sb = new StringBuilder("Welcome");
        CharSequence charSequence = sb.subSequence(3, 6);
        String strValue = (String) charSequence;
        System.out.println("strValue = " + strValue);

    }
}