Dirty byte compression based on grouping like numbers together

TestCodeDirtyCompression.java

import java.util.Random;
import java.io.File;
import java.io.DataOutputStream;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.util.zip.GZIPOutputStream;

public class TestCodeDirtyCompression {
	public static void main(String[] args) {
		long start = System.currentTimeMillis();
		int[][][] array = new int[4][8][4];
		int result;
		File file = new File("test.chunk");
		Random rng = new Random();
		
		try {
			DataOutputStream stream = new DataOutputStream(new BufferedOutputStream(
				new GZIPOutputStream(new FileOutputStream(file)), 2056));
		
			for(int c = 0; c < 8; c++) { //y
				for(int b = 0; b < 4; b++) { //z
					for(int a = 0; a < 4; a++) { //x
						if(rng.nextBoolean()) result = 1; else result = 0;
						//System.out.println(result);
						array[a][c][b] = result;
					}
				}
			}
		
			int last = -1;
			int clump = 0;
			for(int c = 0; c < 8; c++) { //y
				for(int b = 0; b < 4; b++) { //z
					for(int a = 0; a < 4; a++) { //x
						if(last == -1) {
							clump++;
							last = array[a][c][b];
							continue;
						}
					
						if(last == array[a][c][b]) {
							clump++;
							continue;
						} else if(clump > 1) {
							stream.writeInt(-1);
							stream.writeInt(last);
							stream.writeInt(clump);
							clump = 1;
							last = array[a][c][b];
							continue;
						} else if(clump == 1) {
							stream.writeInt(last);
							last = array[a][c][b];
						}
					}
				}
			}
			if(clump != 0 && clump > 1) {
				stream.writeInt(-1);
				stream.writeInt(last);
				stream.writeInt(clump);
			} else if(clump == 1) {
				stream.writeInt(last);
			}
			
			stream.flush();
			stream.close();
			
			long end = System.currentTimeMillis();
			System.out.println("Done in "+(end-start)+" ms");
		} catch(Exception e) {
			e.printStackTrace();
		}
	}
}