A: new
File("c:\temp.txt")
B: new
File("c:\\temp.txt")
C: new
File("c:/temp.txt")
D: new
File("c://temp.txt")
举一反三
- 创建一个d盘aa文件夹下news.txt文件对象，以下正确的是 A: File file = new File("d:/aa"); B: File file = new File("d:/aa/news.txt"); C: File file = new File("d:/news.txt"); D: File file = new File("d:\aa\news.txt");
- 3.1 下面是创建File对象的语句,错误的是( ) A: File f=new File("d:\\text.txt"); B: File f=new File("d: "); C: File f=new File("d:","text.txt"); D: File f=new File("d:\text.txt");
- 对于存放在D盘的vb文件夹下的文件cj.dat，创建该文件的File类对象的语句，正确的是（）。 A: File f=new File("d:\\vb\\cj.dat"); B: File f=new File("d:/vb","cj.dat"); C: File f=new File("d:/vb/cj.dat"); D:File f=new File(" D: File f=new File("d:\\vb","cj.dat");
- file:///C:\Users\tu\AppData\Local\Temp\msohtmlclip1\01\clip_image001.png
- 下列__________说法是正确的？I:File file = new File("input.txt");try (Scanner input = new Scanner(file)) { String line = input.nextLine();}II:try (File file = new File("input.txt"); Scanner input = new Scanner(file);) { String line = input.nextLine();}III:File file;try (file = new File("input.txt"); Scanner input = new Scanner(file);) { String line = input.nextLine();}IV:File file;Scanner input;try (file = new File("input.txt"); input = new Scanner(file);) { String line = input.nextLine();} A: I B: II C: III D: IV
内容
- 0
下列写法错误的是 A: File f = new File ("a.txt"); B: File f = new File ("d:\\a.txt"); C: FileInputStream fis = new FileInputStream (new File ("a.txt")); D: FileOutputStream fos = new FileOutputStream ( File ("."));
- 1
使用File file=new File("c:\\myletter","letter.txt")创建一个文件对象（）
- 2
以下哪条语句可以获取文件"file.txt"的上一级目录的名字 (). A: String name=File.getParentName("file.txt"); B: String name=(new File("file.txt")).getParent(); C: String name=(new File("file.txt")).getParentName(); D: String name=(new File("file.txt")).getParentFile(); E: Directory dir=(new File("file.txt")).getParentDir(); <br/>String name=dir.getName();
- 3
下列语句错误的是:( ) A: ServerSocket svrsoc= new ServerSocket(8000); B: URL urlBase=new URL(“http://www. zjut.edu.cn/”) ; C: File inFile = new File(“C:/ test.txt”); D: BufferedReader br = new BufferedReader(“C:/ test.txt”);
- 4
在Java语言中,下列语句中正确的是()。 A: String temp[] = new String{"j""a""z"}; B: String temp[] = {"j""a""z"}; C: String temp = {"j""a""z"}; D: String temp[] = new String[]{"j","a","z"};