Bug 82804 Jar creation should use less memory
I noticed that the JarWriter will read the entire file it plans to store into memory. An optimization would be to stream the file directly into the JarOutputStream. The only catch is with STORED items which need the CRC32 computed. A penalty could be taken in that case to compute the CRC in a loop and then stream the file.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/jarpackager/JarPackageData.java
*/
	public String getComment() {
		return fComment;
	}
	/**
	 * Sets the JAR's comment.
	 * 
	 * @param comment	a string or <code>null</code>
	 * 					if the JAR does not contain a comment
	 */
	public void setComment(String comment) {
		fComment= comment;
	}
	/**
	 * Tell whether errors are logged.
	 * <p>
	 * The export operation decides where and
	 * how the errors are logged.
	 * </p>
	 * 
	 * @return <code>true</code> if errors are logged
	 * @deprecated will be removed in final 2.0
	 */
	public boolean logErrors() {
		return true;
	}
	/**
	 * Sets whether errors are logged.
	 * <p>
	 * The export operation decides where and