// Test some of the StringBuffer methods.

public class TestStringBuffer
{
    public static void main(String[ ] argv)
    {
        // Test constructors.
        StringBuffer a = new StringBuffer( );
        StringBuffer b = new StringBuffer(20);
        StringBuffer c = new StringBuffer("mississippi");

        // Print StringBuffer objects, their lengths and capacities;
        System.out.println("*" + a + "* " + 
            a.length( ) + " " + a.capacity( ));
        System.out.println("*" + b + "* " + 
            b.length( ) + " " + b.capacity( ));
        System.out.println("*" + c + "* " + 
            c.length( ) + " " + c.capacity( ));

        // Test overloaded append methods.
        c.append(3.14);
        c.append("$$$$$");
        System.out.println(c);

        // Test overloaded delete methods.
        c.delete(2, 4);
        System.out.println(c);
        c.deleteCharAt(10);
        System.out.println(c);

        // Test overloaded insert methods.
        c.insert(0, 2.78);
        c.insert(5, "%%%");
        System.out.println(c);

        // Test replace method.
        c.replace(4, 6, "xyz");
        System.out.println(c);

        // Test reverse method.
        c.reverse( );
        System.out.println(c);

        // Test setCharAt method.
        c.setCharAt(0, '~');
        System.out.println(c);

        // Test setLength method.
        c.setLength(5);
        System.out.println("*" + c + "* " + c.length( ));
        c.setLength(7);
        System.out.println("*" + c + "* " + c.length( ));
    }
}

// Output:
** 0 16
** 0 20
*mississippi* 11 27
mississippi3.14$$$$$
miissippi3.14$$$$$
miissippi314$$$$$
2.78m%%%iissippi314$$$$$
2.78xyz%%iissippi314$$$$$
$$$$$413ippissii%%zyx87.2
~$$$$413ippissii%%zyx87.2
*~$$$$* 5
*~$$$$ * 7