为什么条件符合了，不见判断

悬赏园豆：5 [已解决问题] 解决于 2012-11-04 15:38

int length = 40;
        int begin = 0;    // 截取字符串开始
        int end = length;      // 截取字符串结束
        int txtlength = txt.length();
        
        while(txtlength%end!=txtlength){
            if(txtlength%end==txtlength && txtlength<end){
                list.add(txt.substring(begin, txtlength));
            }else{
                list.add(txt.substring(begin, end));
            }
            //txtlength = txtlength-end;
            begin = end;
            end +=length;
        }