Learn how to use FileOutputStream of Java to write into a file.
Writing a file using FileOutputStream
Writing a file using FileOutputStream
As we discussed earlier, java has two kinds of streams- Byte & Characters. For reading and writing binary data, byte stream is incorporated. The OutputStream abstract class is used to write data to a file. The FileOutputStream is the subclass of the OutputStream abstract class. The FileOutputStream is used to write data to a file.
For writing data like bytes, integers, floats, or other "data" orientated types, we incorporate DataOutputStream while for text we should use PrintStream class.
Given below example will give you a clear idea how to use FileOutputStream :
Example
import java.io.*;
// Example of FileOutputStream
public class FileOutStreamDemo {
public static void main(String[] args) {
FileOutputStream out; // declare a file output object
PrintStream p; // declare a print stream object
try {
// Create a new file output stream
// connected to "DevFile.txt"
out = new FileOutputStream("DevFile.txt");
// Connect print stream to the output stream
p = new PrintStream(out);
p.println("The text shown here will write to a file after run");
System.out.println("The Text is written to DevFile.txt");
p.close();
} catch (Exception e) {
System.err.println("Error writing to file");
}
}
}
Output :
The following message will appear on command prompt :
| The Text is written to DevFile.txt |
The Content of the text file:
