[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fUptdvHoky6Xrjz9gkGOyZlv4LOVdp8wmKNoGbS9Qx2I":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":14,"related":15,"source":25,"type":92},[],"2026-01-01 03:59:29",297107173,[8,9],"正确","错误",{"courseId":11,"courseImg":12,"courseName":13},"81220dd3e4cd363aa0f91dea39084f21","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F91c9a3ea300f8cc05b4aa8045bd4a493.png","Java高级程序设计","如果一个File对象对应的目录下有文件或子目录,调用该对象的delete()方法可以将该目录删除",[16,27,36,45,54,63,69,78,87,93],{"answer":17,"createTime":5,"id":18,"options":19,"question":24,"source":25,"type":26},[],297107164,[20,21,22,23],"两者没有区别","每次读入的字节数不同","前者带有缓存,后者没有","前者以字节为单位读写,后者以字符为单位读写","字节流和字符流的区别是( )","v1",0,{"answer":28,"createTime":5,"id":29,"options":30,"question":35,"source":25,"type":26},[],297107165,[31,32,33,34],"InputStream","Writer","OutputStream","Reader","下列哪项是用于输出的字符流? ( )",{"answer":37,"createTime":5,"id":38,"options":39,"question":44,"source":25,"type":26},[],297107166,[40,41,42,43],"isFile()","isAbsolute()","getName()","getPath()","从键盘上输入一个字符串创建文件对象, 若要判断该文件对象为文件,可使用下列哪个方法?( )",{"answer":46,"createTime":5,"id":47,"options":48,"question":53,"source":25,"type":26},[],297107167,[49,50,51,52],"-1","1","无标记","0","用 read()方法读取文件内容时,判断文件结束的标记为( )",{"answer":55,"createTime":5,"id":56,"options":57,"question":62,"source":25,"type":26},[],297107168,[58,59,60,61],"使用字节缓冲流读写文件时,可以一次性读取多个字节的数据","字节缓冲流只能用于处理文本数据","使用字节缓冲流可以减少对磁盘IO的频繁访问","使用字节缓冲流可以提高读取和写入操作的效率","下列关于字节流缓冲区的说法,错误的是( )",{"answer":64,"createTime":5,"id":65,"options":66,"question":68,"source":25,"type":26},[],297107169,[52,49,67,50],"null","下列选项中,FileWriter类中read()方法读取到流末尾的返回值是( )",{"answer":70,"createTime":5,"id":71,"options":72,"question":77,"source":25,"type":26},[],297107170,[73,74,75,76],"在D盘创建文件demo.txt,但文件内容是空的","在D盘创建文件demo.txt,并写入数据abc","编译出错","在D盘已有的文件demo.txt中追加写入abc","请阅读下面的程序 public class Hello { public static void main(String[] args) throws IOException { FileOutputStream fos = new FileOutputStream("D:\\\\demo.txt"); fos.write("abc"); fos.close(); }} 下列针对以上程序运行结果的描述,正确的是( )",{"answer":79,"createTime":5,"id":80,"options":81,"question":86,"source":25,"type":26},[],297107171,[82,83,84,85],"我是程序员我爱代码","我是程序员","乱码","我爱代码","请阅读下面的程序 public class Demo { public static void main(String[] args) throws Exception { FileOutputStream fos = new FileOutputStream("aa.txt",true); fos.write("我爱代码".getBytes()); fos.close(); }} 假设项目根目录下有aa.txt,文本内容为"我是程序员",请问执行上面程序执行后aa.txt里面的内容是( )",{"answer":88,"createTime":5,"id":89,"options":90,"question":91,"source":25,"type":92},[],297107172,[8,9],"FileOutputStream类会检查文件是否存在,如果文件不存在则抛出异常",3,{"answer":94,"createTime":5,"id":6,"options":95,"question":14,"source":25,"type":92},[],[8,9]]