PrintStream PrintStream(File, String) in Java

PrintStream(File, String): This method is available in the java.io.PrintStream class of Java.

Syntax:

java.io.PrintStream.PrintStream(File file, String csn) throws FileNotFoundException, UnsupportedEncodingException

This method takes two arguments. This method creates a new print stream, without automatic line flushing, with the specified file and charset.

This convenience constructor creates the necessary intermediate OutputStreamWriter, which will encode characters using the provided charset.

Parameters: Two parameters are required for this method.

file: The file to use as the destination of this print stream. If the file exists, then it will be truncated to zero sizes; otherwise, a new file will be created. The output will be written to the file and buffered.

csn: The name of a supported charset.

Throws:

1. FileNotFoundException - If the given file object does not denote an existing, writable regular file and a new regular file of that name cannot be created, or if some other error occurs while opening or creating the file.

2. SecurityException - If a security manager is present and checkWrite(file.getPath())denies write access to the file.

3. UnsupportedEncodingException - If the named charset is not supported.

Approach 1: When no exception

Java

import java.io.File;
import java.io.IOException;
import java.io.PrintStream;

public class PrintStreamPrintStream5 {
    public static void main(String[] args) throws IOException {

        File file = new File("D:\\hello.txt");
        String csn = "UTF-8";
        PrintStream printStream = new PrintStream(file, csn);

        System.out.println(printStream);
        printStream.close();
    }
}

Output:

java.io.PrintStream@26f0a63f

Approach 2: UnsupportedEncodingException

Java

package com.PrintStream;

import java.io.File;
import java.io.IOException;
import java.io.PrintStream;

public class PrintStreamPrintStream5 {
    public static void main(String[] args) throws IOException {

        File file = new File("D:\\hello.txt");
        String csn = "csn";
        PrintStream printStream = new PrintStream(file, csn);

        System.out.println(printStream);
        printStream.close();
    }
}

Output:

Exception in thread "main" java.io.UnsupportedEncodingException: csn
	at java.base/java.io.PrintStream.toCharset(PrintStream.java:102)
	at java.base/java.io.PrintStream.<init>(PrintStream.java:372)
	at com.PrintStream.PrintStreamPrintStream5.main(PrintStreamPrintStream5.java:12)

Some other methods of PrintStream

append(char): This method appends the specified character to this output stream.

append(CharSequence): This method appends the specified character sequence to this output stream.

append(CharSequence, int, int): This method appends a subsequence of the specified character sequence to this output stream.

checkError(): This method flushes the stream and checks its error state.

close(): This is done by flushing the stream and then closing the underlying output stream.

flush(): This method flushes the stream.

format(String, Object...): This method writes a formatted string to this output stream using the specified format string and arguments.

format(Locale, String, Object...): This method writes a formatted string to this output stream using the specified format string and arguments.

print(boolean): This method prints a boolean value.

printf(String, Object...): It is a convenient method to write a formatted string to this output stream using the specified format string and arguments.

printf(Locale, String, Object...): It is a convenient method to write a formatted string to this output stream using the specified format string and arguments.

println(): This method terminates the current line by writing the line separator string.

PrintStream(File): This method creates a new print stream, without automatic line flushing, with the specified file.

PrintStream(OutputStream, boolean, String): This method creates a new print stream, with the specified OutputStream, line flushing, and character encoding.

PrintStream(OutputStream): This method creates a new print stream, without automatic line flushing, with the specified OutputStream.

PrintStream(String): This method creates a new print stream, without automatic line flushing, with the specified file name.

PrintStream(File, Charset): This method creates a new print stream, without automatic line flushing, with the specified file and charset.

PrintStream(File, String): This method creates a new print stream, without automatic line flushing, with the specified file and charset.

PrintStream(OutputStream, boolean): This method creates a new print stream, with the specified OutputStream and line flushing.

PrintStream(String, Charset): This method creates a new print stream, without automatic line flushing, with the specified file name and charset.

PrintStream(String, String): This method creates a new print stream, without automatic line flushing, with the specified file name and charset.

PrintStream(OutputStream, boolean, Charset): This method creates a new print stream, with the specified OutputStream, line flushing, and charset.

write(byte[]):  This method writes all bytes from the specified byte array to this stream.

write(int): This method writes the specified byte to this stream.

write(byte[], int, int): This method writes len bytes from the specified byte array starting to offset off to this stream.

writeBytes(byte[]): This method writes all bytes from the specified byte array to this stream.