JAVA EE: Java Tutorial : Java StringBuilder [substring method]

Thursday 28 April 2016

Java Tutorial : Java StringBuilder [substring method]

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Java Tutorial : Java StringBuilder [substring method]

SubStringDemo1.java

/*
 * public String substring(int start, int end)
 * 
 * Parameters: 
 * ---------- 
 * start - The beginning index,inclusive. 
 * 
 * end - The ending index, exclusive.
 * 
 * Returns: 
 * ------- 
 * The new string. 
 * 
 * Throws: 
 * ------
 * StringIndexOutOfBoundsException - if start or end are
 * negative or greater than length(), or start is
 * greater than end.
 */
public class SubStringDemo1
{

    public static void main(String[] args)
    {
        StringBuilder sb = new StringBuilder("Welcome");
        String subString = sb.substring(3, 6);
        System.out.println("subString = " + subString);
    }
}

Output

subString = com

SubStringDemo2.java

/*
 * public String substring(int start)
 * 
 * Parameters: 
 * ----------
 * start - The beginning index, inclusive.
 * 
 * Returns: 
 * -------
 * The new string.
 * 
 * Throws:
 * ------
 * StringIndexOutOfBoundsException - if start is less 
 * than zero, or greater than the length of this object.
 */

public class SubStringDemo2
{

    public static void main(String[] args)
    {
        StringBuilder sb = new StringBuilder("Welcome");
        String subString = sb.substring(3);
        System.out.println("subString = " + subString);

    }
}