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Java ObjectOutputStream writeFloat() Method with Example

ObjectOutputStream Class writeFloat() method: Here, we are going to learn about the writeFloat() method of ObjectOutputStream Class with its syntax and example.
Submitted by Preeti Jain, on April 10, 2020

ObjectOutputStream Class writeFloat() method

• writeFloat() method is available in java.io package.
• writeFloat() method is used to write the given 4 bytes of a float value.
• writeFloat() 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.
• writeFloat() method may throw an exception at the time of writing float.
  IOException: This exception may throw when getting any input/output error while writing to the output stream.

Syntax:

    public void writeFloat(float value);

Parameter(s):

• float value – represents the float value to be written.

Return value:

The return type of the method is void, it returns nothing.

Example:

// Java program to demonstrate the example 
// of void writeFloat(float value) method of 
// ObjectOutputStream

import java.io.*;

public class WriteFloatOfOOS {
 public static void main(String[] args) throws Exception {
  // Instantiates ObjectOutputStream , ObjectInputStream 
  // FileInputStream and FileOutputStream
  FileOutputStream file_out_stm = new FileOutputStream("D:\\includehelp.txt");
  ObjectOutputStream obj_out_stm = new ObjectOutputStream(file_out_stm);
  FileInputStream file_in_stm = new FileInputStream("D:\\includehelp.txt");
  ObjectInputStream obj_in_stm = new ObjectInputStream(file_in_stm);

  // By using writeFloat() method is to
  // write the float to the stream		
  obj_out_stm.writeFloat(10.0f);
  obj_out_stm.writeFloat(20.0f);
  obj_out_stm.writeFloat(30.0f);
  obj_out_stm.writeFloat(40.0f);

  obj_out_stm.flush();

  // By using readFloat() method is to 
  // read the float 
  for (int i = 0; i < 4; ++i) {
   float f = obj_in_stm.readFloat();
   System.out.println("obj_in_stm.readFloat(): " + f);
  }

  // By using close() method is to 
  // close all the streams 
  System.out.println("Stream Shutdown...");

  file_in_stm.close();
  file_out_stm.close();
  obj_in_stm.close();
  obj_out_stm.close();
 }
}

Output

obj_in_stm.readFloat(): 10.0
obj_in_stm.readFloat(): 20.0
obj_in_stm.readFloat(): 30.0
obj_in_stm.readFloat(): 40.0
Stream Shutdown...