read String from ByteBuffer - Java java.nio

Java examples for java.nio:ByteBuffer Read

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Description

read String from ByteBuffer

Demo Code


//package com.java2s;

import java.io.UnsupportedEncodingException;

import java.nio.ByteBuffer;

public class Main {
    public static String readString(ByteBuffer b) {
        int len = b.getInt();
        if (b.position() + len > b.capacity() - 1 || len < 0) {
            throw new IllegalStateException(
                    "Tried to read string of length " + len + " at "
                            + b.position());
        }/*from  ww w.j a va  2 s . co  m*/

        if (len > 0) {
            byte[] buf = new byte[len];
            b.get(buf);
            b.get();
            try {
                return new String(buf, "ISO-8859-15");
            } catch (UnsupportedEncodingException e) {
                throw new IllegalStateException(e.getMessage());
            }
        } else {
            return "";
        }
    }
}

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