For Java Programing, 1. Name at least five different file categories. 2. What ki
ID: 3805874 • Letter: F
Question
For Java Programing,
1. Name at least five different file categories.
2. What kind of data may be stored in a file?
3. What are at least four methods associated with file processing (using JAVA of course)?
4) Execute the following code to read a file.
import java.io.*;
public class ReadFile {
public static BufferedReader buffer;
public static void main(String[] args)
{
try {
// create a FileReader object
FileReader file = new FileReader("Frost.txt");
// create a BufferedReader object to read the file
BufferedReader buffer = new BufferedReader(file);
String line ="";
while((line=buffer.readLine()) !=null)
{
System.out.println(line);
}
//close the BufferedReader Object
buffer.close();
}
catch (IOException e)
{
System.out.println("A read error has occurred");
}
}
}
Explanation / Answer
1. Name at least five different file categories.
Answer: .txt, .dat, .xml, .dox, .xls, .ppt,
2. What kind of data may be stored in a file?
Answer: text based data stored in a file.
Frost.txt
aaaa
bbbb
cccc
dddd
eeee
3. What are at least four methods associated with file processing (using JAVA of course)?
Answer:
readLine() method is used to read a line from a file
close() method is used to close the file
read() method is used to read a single character
mark() method is used to marh the present position in Stream
skip() method is used to skip the chracters
4) Execute the following code to read a file.
Answer:
ReadFile.java
package a4;
import java.io.*;
public class ReadFile {
public static BufferedReader buffer;
public static void main(String[] args)
{
try {
// create a FileReader object
FileReader file = new FileReader("Frost.txt");
// create a BufferedReader object to read the file
BufferedReader buffer = new BufferedReader(file);
String line ="";
while((line=buffer.readLine()) !=null)
{
System.out.println(line);
}
//close the BufferedReader Object
buffer.close();
}
catch (IOException e)
{
System.out.println("A read error has occurred");
}
}
}
Output:
aaaa
bbbb
cccc
dddd
eeee
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