StringBuilder &&StringBuffer删除最后一个字符的方法

StringBuilder && StringBuffer 删除最后一个字符的方法

StringBuffer sb = new StringBuffer("dfdsfads,");
sb.deleteCharAt(sb.length()-1);
System.out.println(sb);

StringBuffer sb = new StringBuffer("dfdsfads,");
sb.deleteCharAt(sb.length()-1);
System.out.println(sb);