PrintWriter PrintWriter(File, String) in Java

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

Syntax:

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

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

Parameters: Two parameters are required for this method.

file: The file to use as the destination of this writer. 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.PrintWriter;

public class PrintWriterPrintWriter6 {
    public static void main(String[] args) throws IOException {
        File file = new File("D:\\hello.txt");
        String csn = "UTF-8";

        PrintWriter printWriter = new PrintWriter(file, csn);

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

Output:

java.io.PrintWriter@4361bd48

Approach 2: UnsupportedEncodingException 

Java

package com.PrintWriter;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;

public class PrintWriterPrintWriter6 {
    public static void main(String[] args) throws IOException {
        File file = new File("D:\\hello.txt");
        String csn = "UTF-8888";

        PrintWriter printWriter = new PrintWriter(file, csn);

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

Output:

Exception in thread "main" java.io.UnsupportedEncodingException: UTF-8888
	at java.base/java.io.PrintWriter.toCharset(PrintWriter.java:89)
	at java.base/java.io.PrintWriter.<init>(PrintWriter.java:349)
	at com.PrintWriter.PrintWriterPrintWriter6.main(PrintWriterPrintWriter6.java:12)

Some other methods of PrintWriter

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

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

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

checkError(): This method flushes the stream if it's not closed and checks its error state.

close(): This method closes the stream and releases any system resources associated with it.

flush(): This method flushes the stream.

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

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

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

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

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

PrintWriter(Writer, boolean): This method creates a new PrintWriter.

PrintWriter(OutputStream, boolean, Charset): This method creates a new PrintWriter from an existing OutputStream.

PrintWriter(OutputStream): This method creates a new PrintWriter, without automatic line flushing, from an existing OutputStream.

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

PrintWriter(Writer): This method creates a new PrintWriter, without automatic line flushing.

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

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

PrintWriter(OutputStream, boolean): This method creates a new PrintWriter from an existing OutputStream.

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

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

write(char[]): This method writes an array of characters.

write(int): This method writes a single character.

write(String): This method writes a string

write(char[], int, int): This method writes A Portion of an array of characters.

write(String, int, int): This method writes a portion of a string.