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Java.io.RandomAccessFile.write() Method
Description
The java.io.RandomAccessFile.writeBoolean(boolean v) method writes a boolean to the file as a one-byte value. The value true is written out as the value (byte)1; the value false is written out as the value (byte)0. The write starts at the current position of the file pointer.
Declaration
Following is the declaration for java.io.RandomAccessFile.write() method.
public final void writeBoolean(boolean v)
Parameters
v − a boolean 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.write() method.
package com.tutorialspoint; import java.io.*; public class RandomAccessFileDemo { public static void main(String[] args) { try { boolean b = true; // create a new RandomAccessFile with filename test RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw"); // write a boolean raf.writeBoolean(false); // set the file pointer at 0 position raf.seek(0); // print the boolean System.out.println("" + raf.readBoolean()); // write a boolean raf.writeBoolean(b); // set the file pointer at position 1 raf.seek(1); // print the boolean System.out.println("" + raf.readBoolean()); } 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 −
false true