core/src/main/java/org/apache/james/mime4j/util/ByteArrayBuffer.java [62:178]:
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        this.buffer = newbuffer;
    }

    public void append(final byte[] b, int off, int len) {
        if (b == null) {
            return;
        }
        if ((off < 0) || (off > b.length) || (len < 0) ||
                ((off + len) < 0) || ((off + len) > b.length)) {
            throw new IndexOutOfBoundsException();
        }
        if (len == 0) {
            return;
        }
        int newlen = this.len + len;
        if (newlen > this.buffer.length) {
            expand(newlen);
        }
        System.arraycopy(b, off, this.buffer, this.len, len);
        this.len = newlen;
    }

    public void append(int b) {
        int newlen = this.len + 1;
        if (newlen > this.buffer.length) {
            expand(newlen);
        }
        this.buffer[this.len] = (byte)b;
        this.len = newlen;
    }

    public void clear() {
        this.len = 0;
    }

    public byte[] toByteArray() {
        byte[] b = new byte[this.len];
        if (this.len > 0) {
            System.arraycopy(this.buffer, 0, b, 0, this.len);
        }
        return b;
    }

    public byte byteAt(int i) {
        if (i < 0 || i >= this.len)
            throw new IndexOutOfBoundsException();

        return this.buffer[i];
    }

    public int capacity() {
        return this.buffer.length;
    }

    public int length() {
        return this.len;
    }

    public byte[] buffer() {
        return this.buffer;
    }

    public int indexOf(byte b) {
        return indexOf(b, 0, this.len);
    }

    public int indexOf(byte b, int beginIndex, int endIndex) {
        if (beginIndex < 0) {
            beginIndex = 0;
        }
        if (endIndex > this.len) {
            endIndex = this.len;
        }
        if (beginIndex > endIndex) {
            return -1;
        }
        for (int i = beginIndex; i < endIndex; i++) {
            if (this.buffer[i] == b) {
                return i;
            }
        }
        return -1;
    }

    public void setLength(int len) {
        if (len < 0 || len > this.buffer.length) {
            throw new IndexOutOfBoundsException();
        }
        this.len = len;
    }

    public void remove(int off, int len) {
        if ((off < 0) || (off > this.len) || (len < 0) ||
                ((off + len) < 0) || ((off + len) > this.len)) {
            throw new IndexOutOfBoundsException();
        }
        if (len == 0) {
            return;
        }
        int remaining = this.len - off - len;
        if (remaining > 0) {
            System.arraycopy(this.buffer, off + len, this.buffer, off, remaining);
        }
        this.len -= len;
    }

    public boolean isEmpty() {
        return this.len == 0;
    }

    public boolean isFull() {
        return this.len == this.buffer.length;
    }

    @Override
    public String toString() {
        return new String(toByteArray());
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core/src/main/java/org/apache/james/mime4j/util/RecycledByteArrayBuffer.java [64:180]:
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        this.buffer = newbuffer;
    }

    public void append(final byte[] b, int off, int len) {
        if (b == null) {
            return;
        }
        if ((off < 0) || (off > b.length) || (len < 0) ||
                ((off + len) < 0) || ((off + len) > b.length)) {
            throw new IndexOutOfBoundsException();
        }
        if (len == 0) {
            return;
        }
        int newlen = this.len + len;
        if (newlen > this.buffer.length) {
            expand(newlen);
        }
        System.arraycopy(b, off, this.buffer, this.len, len);
        this.len = newlen;
    }

    public void append(int b) {
        int newlen = this.len + 1;
        if (newlen > this.buffer.length) {
            expand(newlen);
        }
        this.buffer[this.len] = (byte)b;
        this.len = newlen;
    }

    public void clear() {
        this.len = 0;
    }

    public byte[] toByteArray() {
        byte[] b = new byte[this.len];
        if (this.len > 0) {
            System.arraycopy(this.buffer, 0, b, 0, this.len);
        }
        return b;
    }

    public byte byteAt(int i) {
        if (i < 0 || i >= this.len)
            throw new IndexOutOfBoundsException();

        return this.buffer[i];
    }

    public int capacity() {
        return this.buffer.length;
    }

    public int length() {
        return this.len;
    }

    public byte[] buffer() {
        return this.buffer;
    }

    public int indexOf(byte b) {
        return indexOf(b, 0, this.len);
    }

    public int indexOf(byte b, int beginIndex, int endIndex) {
        if (beginIndex < 0) {
            beginIndex = 0;
        }
        if (endIndex > this.len) {
            endIndex = this.len;
        }
        if (beginIndex > endIndex) {
            return -1;
        }
        for (int i = beginIndex; i < endIndex; i++) {
            if (this.buffer[i] == b) {
                return i;
            }
        }
        return -1;
    }

    public void setLength(int len) {
        if (len < 0 || len > this.buffer.length) {
            throw new IndexOutOfBoundsException();
        }
        this.len = len;
    }

    public void remove(int off, int len) {
        if ((off < 0) || (off > this.len) || (len < 0) ||
                ((off + len) < 0) || ((off + len) > this.len)) {
            throw new IndexOutOfBoundsException();
        }
        if (len == 0) {
            return;
        }
        int remaining = this.len - off - len;
        if (remaining > 0) {
            System.arraycopy(this.buffer, off + len, this.buffer, off, remaining);
        }
        this.len -= len;
    }

    public boolean isEmpty() {
        return this.len == 0;
    }

    public boolean isFull() {
        return this.len == this.buffer.length;
    }

    @Override
    public String toString() {
        return new String(toByteArray());
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