java convert bytebuffer to string

convertBytebufferToString.java

import java.nio.ByteBuffer;
import java.nio.charset.Charset;

...
/**
Method Usage

  ByteBuffer bf = string2ByteBuffer("test", Charset.forName("UTF-8"));

**/
public static ByteBuffer string2ByteBuffer(String s, Charset charset) {
        return ByteBuffer.wrap(s.getBytes(charset));
}
    
public static String byteBuffer2String(ByteBuffer buf, Charset charset) {
        byte[] bytes;
        if (buf.hasArray()) {
            bytes = buf.array();
        } else {
            buf.rewind();
            bytes = new byte[buf.remaining()];
        }
        return new String(bytes, charset);
}