/*
 * 文件名:ex_6_2_6.java
 * 說  明:演示replace()方法的使用
 */
class ex_6_2_6{
	public static void main(String args[]) {
		StringBuffer sb = new StringBuffer("This is a test.");
		sb.replace(5, 7, "was");
		System.out.println("After replace: " + sb);
	}
}