code review exercise for PCA 2014

gistfile1.java

package com.somecompany.app.process;

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import javax.imageio.ImageIO;

public class PersonPictureProcess extends APPProcess {

	public static byte[] getImage(String id) throws Exception {
		try {
			byte[] imageData = null;

			String filePath = System.getProperty("app.imageRepository")
					+ getFrameworkContext().getPrincipal().getTenant().getId()
					+ "/" + id + ".png";

			File file = new File(filePath);

			if (file.exists()) {
				BufferedImage image = ImageIO.read(new File(filePath));
				ByteArrayOutputStream baos = new ByteArrayOutputStream();
				ImageIO.write(image, "png", baos);
				imageData = baos.toByteArray();
			}

			return imageData;
		} catch (Exception e) {
			throw e;
		}
	}

	public static void setImage(String id, InputStream inputStream,
			String mimeSubType) throws Exception {
		try {
			String filePath = System.getProperty("app.imageRepository")
					+ getFrameworkContext().getPrincipal().getTenant().getId()
					+ "/" + id + "." + mimeSubType;

			File file = new File(filePath);
			file.getParentFile().mkdirs();
			OutputStream outpuStream = new FileOutputStream(new File(filePath));
			int read = 0;
			byte[] bytes = new byte[1024];
			outpuStream = new FileOutputStream(new File(filePath));
			while ((read = inputStream.read(bytes)) != -1) {
				outpuStream.write(bytes, 0, read);
			}
			outpuStream.flush();
			outpuStream.close();
		} catch (Exception e) {
			throw e;
		}
	}

	public static void deleteImage(String id) throws Exception {
		try {
			String filePath = System.getProperty("app.imageRepository")
					+ getFrameworkContext().getPrincipal().getTenant().getId()
					+ "/" + id + ".png";

			File file = new File(filePath);
			file.delete();
		} catch (Exception e) {
			throw e;
		}
	}
}