201711671224 "Java Programming" Chapter 10 learning summary

Learning content summary

• class file: three constructor: File (String filename); File (String directoryPath, String filename); File (File dir, String filename)
• File input stream of bytes:
• Four basic steps:
  • Setting input stream source
  • Create a link to the source of the input stream
  • Let the input data stream read from the source
  • Close the input stream
• Use FileInputStream(String name); FileInputStream(File file); to create an input stream
• Output stream: a character input stream and output stream read and write methods using a character array to read data
• Scanner class parses the file:
• Use the default file parsing division marks
• Use regular expressions to parse the file as a separate tag

File file = new File("hello.java");
Scanner sc = new Scanner(file);

File file = new File("hello.java");
Scanner sc = new Scanner(file);
sc.useDelimiter(正则表达式);

Other (perception, thinking, etc.)

no

Reference material

• "Java Programming"