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Java.io.RandomAccessFile.writeChars() Method
Description
The java.io.RandomAccessFile.writeChars(String s) method writes a string to the file as a sequence of characters. Each character is written to the data output stream as if by the writeChar method. The write starts at the current position of the file pointer.
Declaration
Following is the declaration for java.io.RandomAccessFile.writeChars() method.
public final void writeChars(String s)
Parameters
s − a String value to be written.
Return Value
This method does not return a value.
Exception
IOException − If an I/O error occurs.
Example
The following example shows the usage of java.io.RandomAccessFile.writeChar() method.
package com.tutorialspoint; import java.io.*; public class RandomAccessFileDemo { public static void main(String[] args) { try { String s = "Hello World"; // create a new RandomAccessFile with filename test RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw"); // write a char in the file raf.writeChars(s); // set the file pointer at 0 position raf.seek(0); // read chars for (int i = 0; i < 11; i++) { System.out.print("" + raf.readChar()); } // set the file pointer at 0 position raf.seek(0); // change the line for better view System.out.println(); // write a char at the start raf.writeChars("This is an example"); // set the file pointer at 0 position raf.seek(0); // read chars for (int i = 0; i < 18; i++) { System.out.print("" + raf.readChar()); } } catch (IOException ex) { ex.printStackTrace(); } } }
Assuming we have a text file c:/test.txt, which has the following content. This file will be used as an input for our example program −
ABCDE
Let us compile and run the above program, this will produce the following result −
Hello World This is an example
java_io_randomaccessfile.htm
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