What is the method for converting the encoding format i…

There are several methods that can be used for converting Java encoding formats.

Encode conversion can be done using the constructors of the String class. For instance, the String(byte[] bytes, Charset charset) constructor can convert a byte array into a string with a specified encoding format, or the String(byte[] bytes, int offset, int length, Charset charset) constructor can convert a specified portion of the byte array into a string.

byte[] bytes = "Hello World".getBytes(StandardCharsets.UTF_8);
String str = new String(bytes, StandardCharsets.UTF_16);

System.out.println(str); // 输出: Hello World

2. Use the constants provided by the StandardCharsets class for encoding conversion. Java 7 and later versions include the StandardCharsets class, which contains some commonly used character set encoding formats.

byte[] bytes = "Hello World".getBytes(StandardCharsets.UTF_8);
String str = new String(bytes, StandardCharsets.UTF_16);

System.out.println(str); // 输出: Hello World

3. Utilize the Charset class for encoding conversion. The Charset class offers the decode(ByteBuffer buffer) method to convert a ByteBuffer object into a string, or use the encode(CharBuffer buffer) method to convert a string into a ByteBuffer object.

ByteBuffer buffer = StandardCharsets.UTF_8.encode("Hello World");
String str = StandardCharsets.UTF_16.decode(buffer).toString();

System.out.println(str); // 输出: Hello World

It is important to note that encoding conversion may cause an UnsupportedEncodingException exception, so it is necessary to handle exceptions when using it.