EBK JAVA PROGRAMMING
8th Edition
ISBN: 9781305480537
Author: FARRELL
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 13, Problem 20RQ
<PROGRAM-DESCRIPTION-ANSWER>
A file channel “is seekable”.
Hence, the correct answer is option “C”.
</PROGRAM-DESCRIPTION-ANSWER>
Explanation of Solution
File Channel:
- A file channel is a SeekableByteChannel that is connected to a file. It has a current position within its file that can be both queried and modified.
- The file itself contains a variable-length sequence of bytes, which can be read and written and whose current size can be queried...
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Students have asked these similar questions
I have a "user.json" file that looks like this
{
"something@somewhere.com": "maybe",
"john@beatles.uk": "lennonj!",
"paul@beatles.uk": "mccartney",
"mick@rollingstones.uk": "jaggerm!"
}
using java script i have to parse this file and then check this email and file conbinations against user input
This is the code i m using to parse the file.
function lookUpCredentials(filePath, cb) {
fs.readFile(filePath, (err, fileData) => {
if (err) {
return cb && cb(err);
}
try {
const object = JSON.parse(fileData);
return cb && cb(null, object);
} catch (err) {
return cb && cb(err);
}
});
}
lookUpCredentials("./user.json", (err, data) => {
if (err) {
console.log(err);
return;
}
credentials = data;
});
and this is the code i m using to get input from the user
app.post('/login', (req, res) => {
let username =…
Which of the following statements will write to an output file, assuming that a variable oFile has been declared correctly as in the previous question and that a String variable named s has been created with the appropriate data to write?
A
oFile.println(s);
B
oFile.write(s);
C
oFile.output(s);
D
oFile.fileWrite(s);
can someone check why my code is not working?
intergers.txt
4
7
2
5
3
#include <iostream>#include <fstream>using namespace std;
int main(){int num[100],i=-1; // variable declaration to read the integer data
char tx;//variable declared
ifstream myFile; // input file declaration
myFile.open("numbers.txt"); // Syntax for open the file and read integer.txt
while (!(myFile.eof())){ myFile >> num[i]; i++;
// read the integer content from the file
//myFile>>tx; // read the comma}num[i] = num[i+1]; // Delete the last garbage valuecout<<"The elements in the array are "; for(int j=0;j<i;j++){ // Loop to run for all the elements in the array if(j==i-1) cout<<num[j]<<endl; // print element with new line else cout<<num[j]<<","; // print the array} myFile.close(); //close the filereturn 0;}
Chapter 13 Solutions
EBK JAVA PROGRAMMING
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