Please answer #2, I only inputted #1 for reference purposes. (2.) Among the Java
ID: 3572069 • Letter: P
Question
Please answer #2, I only inputted #1 for reference purposes. (2.) Among the Java statements, which you have provided for the foregoing questions 1a and 1b above, which particular statement(s) will possibly result in an exception of type IOException to be thrown (write down the particular statement(s) that may result in the exception to be thrown)? (1.) Write down the MINIMUM number of Java program code statements that are required to accomplish the following: a. Opening a file, which is named myDataFile.data, for reading data from the file (the opened file should be closed after reading from it). (5 points) b. Opening a file, which is named myDataFile.data, for writing data to the file (the opened file should be closed after writing to it). (5 points) Note the following information and instructions, for the foregoing questions 1a and 1b above: (i) The statements that you write down should also include statements, which import any necessary packages or classes that are required. (ii) You DON’T have to write the definitions of a class or the main method; you are required to write down ONLY the statements that are required to accomplish the goals mentioned in the foregoing points numbers 1a and 1b above. (iii) If you need to use an identifier, for any of the statements that you provide, create and use any valid Java identifier. (iv) For reading data from files and writing data to files, Java provides classes for reading and writing streams of bytes and classes for reading and writing streams of characters. Make sure that any Java classes you use are those classes for reading and writing streams of bytes, not those classes for reading and writing streams of characters. (v) Use the following path, which is given below, as the path to the file – i.e., the file, which is named myDataFile.data – to be opened, for either reading from the file or writing to the file: C:My DocumentsMy Java FilesmyDataFile.data (2.) Among the Java statements, which you have provided for the foregoing questions 1a and 1b above, which particular statement(s) will possibly result in an exception of type IOException to be thrown (write down the particular statement(s) that may result in the exception to be thrown)?
Explanation / Answer
1a)
Scanner scanner = null;
try {
File file = new File("myDataFile.data");
scanner = new Scanner(file);
scanner.close();
} catch (FileNotFoundException fe) {
// TODO: handle file not found exception
} catch (IOException e) {
// TODO: handle exception
} finally {
if (scanner != null)
scanner.close();
}
1b)
BufferedWriter bw = null;
FileWriter fw = null;
try {
String content = "This is the content to write into file ";
fw = new FileWriter(
"C:\My Documents\My Java Files\myDataFile.data");
bw = new BufferedWriter(fw);
bw.write(content);
System.out.println("Done");
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (bw != null)
bw.close();
if (fw != null)
fw.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
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