/*
 * 文件名:ex_6_2_1.java
 * 說  明:演示length()和capacity()
 */
class ex_6_2_1 {
	public static void main(String args[]) {
		StringBuffer sb = new StringBuffer("Hello");
		System.out.println("buffer = " + sb);
		System.out.println("length = " + sb.length());
		System.out.println("capacity = " + sb.capacity());
	}
}