Java Program to Read Text From File From a Specified Index
Last Updated :
05 Feb, 2021
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In a file system, without reading the previous text we cannot directly access the specific index. Thus, Reading text from a file from the specific index is achieved by skipping all the previous characters of a specified index. To read text from an index n, we need to skip (n-1) bytes. Here, we will use FileInputStream class to read text from the file.
long skip(long n): Skips over and discards n bytes of data from the input stream.
Syntax:
public long skip(long n) throws IOException
Parameters: n — the number of bytes to be skipped.
Returns: The actual number of bytes skipped.
Throws: IOException
// Java program to read text from file from a specified
// index
import java.io.FileInputStream;
public class GFG {
public static void main(String args[])
{
try {
// attach the file to FileInputStream
FileInputStream fin = new FileInputStream(
"C:\\Users\\ASPIRE\\Desktop\\java folder\\Demo.txt");
int i = 0;
// discards 7 bytes of data from the input
// stream.
fin.skip(7);
// read from the file
System.out.print("Printing text from index 8: ");
while ((i = fin.read()) != -1) {
System.out.print((char)i);
}
fin.close();
}
catch (Exception e) {
System.out.println(e);
}
}
}
Demo.txt file:
Output:
