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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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package org.jgroups.util;

/**
 * Buffer with an offset and length. Will be replaced with NIO equivalent once JDK 1.4 becomes baseline. This class is
 * immutable. Note that the underlying byte[] buffer must not be changed as long as this Buffer instance is in use !
 * @author Bela Ban
 */
public class Buffer {
    private final byte[] buf;
    private final int offset;
    private final int length;

    public Buffer(byte[] buf, int offset, int length) {
        this.buf=buf;
        this.offset=offset;
        this.length=length;
    }

    public Buffer(byte[] buf) {
        this(buf, 0, buf.length);
    }

    public byte[] getBuf() {
        return buf;
    }

    public int getOffset() {
        return offset;
    }

    public int getLength() {
        return length;
    }

    public Buffer copy() {
        byte[] new_buf=buf != null? new byte[length] : null;
        int new_length=new_buf != null? new_buf.length : 0;
        if(new_buf != null)
            System.arraycopy(buf, offset, new_buf, 0, length);
        return new Buffer(new_buf, 0, new_length);
    }

    public String toString() {
        StringBuilder sb=new StringBuilder();
        sb.append(length).append(" bytes");
        if(offset > 0)
            sb.append(" (offset=").append(offset).append(")");
        return sb.toString();
    }

}