
/**
* 截取字符串
*/
public static void testSubStr() {
StringBuffer sb = new StringBuffer("This is a StringBuffer!");
// substring方法截取字符串,可以指定截取的起始位置和终止位置,
// 默认终止位置为字符串末尾
System.out.println("sb.substring(2) = " + sb.substring(2));
System.out.println("sb.substring(2, 9) = " + sb.substring(2, 9));
}


