Java Standard Charsets UTF 8 when read or write text file (java.nio.charset.StandardCharsets.UTF_8 package, UTF8)

import java.nio.charset.Charset;

import java.nio.charset.StandardCharsets;

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public class StandardCharsetsExample {

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    public static void main(String[] args) {

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        Charset charset = StandardCharsets.UTF_8;

        System.out.println(charset); // UTF-8

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        String charsetText = "UTF-8";

        System.out.println(charsetText); // UTF-8

    }

}

UTF-8

UTF-8

import java.io.*;

import java.nio.charset.StandardCharsets;

import java.nio.file.Files;

import java.nio.file.Paths;

import java.util.List;

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public class StandardCharsetsExample2 {

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

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        // read

        List<String> lines = Files.readAllLines(Paths.get(""), StandardCharsets.UTF_8);

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        String text = "Hi, there!";

        byte[] bytes = text.getBytes(StandardCharsets.UTF_8);

        byte[] bytes2 = text.getBytes("utf8");

        byte[] bytes3 = text.getBytes("utf-8");

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        // write

        Reader reader = new InputStreamReader(

                new FileInputStream(new File("")), StandardCharsets.UTF_8);

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        // we can also use String

        Reader reader2 = new InputStreamReader(

                new FileInputStream(new File("")), "UTF-8");

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        BufferedWriter reader3 =  Files.newBufferedWriter(

                Paths.get(""), StandardCharsets.UTF_8);

    }

}