PrintStream in Java

A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently. Two other features are provided as well.

Unlike other output streams, a PrintStream never throws an IOException; instead, exceptional situations merely set an internal flag that can be tested via the checkError method. Optionally, a PrintStream can be created so as to flush automatically; this means that the flush method is automatically invoked after a byte array is written, one of the println methods is invoked, or a newline character or byte (‘\n’) is written.

All characters printed by a PrintStream are converted into bytes using the platform’s default character encoding. The PrintWriter class should be used in situations that require writing characters rather than bytes.

Constructors

Methods

package com.java.io;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.Locale;

public class PrintStreamExample {

    public static void main(String[] args) {

        FileOutputStream fileOutputStream = null;
        PrintStream printStream = null;

        try {
            fileOutputStream = new FileOutputStream("/Test/TestFolder/test-file10.txt");
            printStream = new PrintStream(fileOutputStream);
            // Printing String
            printStream.print("Hello Guys");
            printStream.println();
            // Printing Boolean
            printStream.print(true);
            printStream.println();
            // Printing Integer
            printStream.print(10); 
            printStream.println();
            // Printing Float
            printStream.print(1.23 f); 
            printStream.println();
            // Format String using format method
              
            printStream.format(Locale.US, "This is %s Example using format", "PrintWriter");  
            printStream.println();
            // Format String using printf method
              
            printStream.printf(Locale.US, "This is %s Example using printf", "PrintWriter");
            printStream.flush();
            System.out.println("Data written to File");
        } catch (IOException ioe) {
            ioe.printStackTrace();
        } finally {
            // Closing the streams
            if (fileOutputStream != null)
                try {
                    fileOutputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            if (printStream != null)
                printStream.close();
        }
    }

}

Data written to File