UTF-8 byte[] to String in java

UTF-8 byte[] to String in java

In Java, you can convert a byte[] containing UTF-8 encoded data to a String by using the appropriate constructors or methods provided by the java.lang.String class. Here are two common ways to do this:

  1. Using the String Constructor:

    You can use the String constructor that takes a byte array and character encoding as parameters. In this case, you specify "UTF-8" as the character encoding.

    byte[] utf8Bytes = ...; // Your UTF-8 encoded byte array String utf8String = new String(utf8Bytes, "UTF-8");

  2. Using the Standard Charset:

    You can also use the Charset class from the java.nio.charset package to specify the character encoding and then use the decode method to convert the byte[] to a CharBuffer, which you can then convert to a String.

    import java.nio.charset.Charset; import java.nio.charset.StandardCharsets; import java.nio.CharBuffer; import java.nio.ByteBuffer; byte[] utf8Bytes = ...; // Your UTF-8 encoded byte array Charset utf8Charset = StandardCharsets.UTF_8; ByteBuffer byteBuffer = ByteBuffer.wrap(utf8Bytes); CharBuffer charBuffer = utf8Charset.decode(byteBuffer); String utf8String = charBuffer.toString();

Both of these approaches will convert the UTF-8 encoded byte array into a String. The first method is more straightforward and commonly used, while the second method gives you more control over the conversion process if needed.

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