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Java LineNumberReader skip() Method with Example

LineNumberReader Class skip() method: Here, we are going to learn about the skip() method of LineNumberReader Class with its syntax and example.
Submitted by Preeti Jain, on April 16, 2020

LineNumberReader Class skip() method

• skip() method is available in java.io package.
• skip() method is used to skip the given number of characters from this LineNumberReader stream.
• skip() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• skip() method may throw an exception at the time of skipping bytes of data.
  
  • IOException: This exception may throw when getting any input/output error while performing.
  • IllegalArgumentException: This exception may throw when the given parameter is less than 0.

Syntax:

    public long skip(long number);

Parameter(s):

• long number – represents the number of characters to skip.

Return value:

The return type of the method is long, it returns the exact number of characters skipped.

Example:

// Java program to demonstrate the example 
// of long skip(long number) method 
// of LineNumberReader

import java.io.*;

public class SkipOfLNR {
 public static void main(String[] args) throws Exception {
  FileReader fr_stm = null;
  LineNumberReader line_r = null;
  int val = 0;

  try {
   // Instantiates FileReader and LineNumberReader
   fr_stm = new FileReader("D:\\includehelp.txt");
   line_r = new LineNumberReader(fr_stm);

   while ((val = line_r.read()) != -1) {
    // By using read() method is to read
    // a byte from line_r
    val = line_r.read();

    // Display corresponding char value
    char ch = (char) val;
    
    // Display value of ch
    System.out.println("line_r.read(): " + ch);

    // By using skip() method is to skip         
    // 2 bytes of char from the line_r
    long skip = line_r.skip(2);
    System.out.println("line_r.skip(2): " + skip);

    System.out.println();
   }
  } catch (Exception ex) {
   System.out.println(ex.toString());
  } finally {
   // with the help of this block is to
   // free all necessary resources linked
   // with the stream
   if (fr_stm != null) {
    fr_stm.close();
    if (line_r != null) {
     line_r.close();
    }
   }
  }
 }
}

Output

line_r.read(): A
line_r.skip(2): 2

line_r.read(): O
line_r.skip(2): 2

line_r.read(): ?
line_r.skip(2): 0