diff --git a/src/com/persesgames/jogl/Renderer.java b/src/com/persesgames/jogl/Renderer.java
index 37526a1..8b4a9fd 100644
--- a/src/com/persesgames/jogl/Renderer.java
+++ b/src/com/persesgames/jogl/Renderer.java
@@ -1,6 +1,5 @@
 package com.persesgames.jogl;
 
-import java.util.Random;
 import java.util.concurrent.TimeUnit;
 
 import javax.media.opengl.DebugGL4;
@@ -25,9 +24,9 @@ import com.persesgames.jogl.explosion.ExplosionComputeHandler;
 public class Renderer implements GLEventListener  {
     private final static Logger logger = LoggerFactory.getLogger(Renderer.class);
 
-    private final static int MAX_ENTITIES_PER_COLOR     = 2000000;
+    //private final static int MAX_ENTITIES_PER_COLOR     = 2000000;
 
-    private final Random random         = new Random(System.nanoTime());
+    //private final Random random         = new Random(System.nanoTime());
 
     private volatile boolean stopped    = false;
     private volatile boolean dirty      = true;
@@ -41,7 +40,7 @@ public class Renderer implements GLEventListener  {
     private boolean                 checkError = false;
 
     private long                    lastLog = System.nanoTime();
-    private long                    start = System.currentTimeMillis();
+    //private long                    start = System.currentTimeMillis();
     private Timer                   timer = new Timer(TimeUnit.SECONDS, 1);
 
     private ExplosionComputeHandler explosionComputeHandler;
diff --git a/src/com/persesgames/jogl/Timer.java b/src/com/persesgames/jogl/Timer.java
index 55fb9a7..e7e7fd2 100644
--- a/src/com/persesgames/jogl/Timer.java
+++ b/src/com/persesgames/jogl/Timer.java
@@ -1,12 +1,12 @@
 package com.persesgames.jogl;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import java.util.HashMap;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 /**
  * Date: 1/4/14
  * Time: 8:00 PM
@@ -17,7 +17,7 @@ public class Timer {
     private Map<String, Long> start = new HashMap<>();
     private Map<String, Long> times = new HashMap<>();
     private Map<String, Long> calls = new HashMap<>();
-    private long nanoStart = System.nanoTime();
+    //private long nanoStart = System.nanoTime();
 
     private final TimeUnit unit;
     private final int units;
@@ -93,7 +93,7 @@ public class Timer {
         if (System.nanoTime() > (lastLog + unit.toNanos(units))) {
 
             for (String timer : times.keySet()) {
-                logger.info("Timer '{}' calls '{}' time '{}ms' time/call '{}ms'", timer, getCalls(timer), (getTime(timer) / 1000000d), (getTime(timer) / 1000000d) / (double)getCalls(timer));
+                logger.info("Timer '{}' calls '{}' time '{}ms' time/call '{}ms'", timer, getCalls(timer), (getTime(timer) / 1000000d), (getTime(timer) / 1000000d) / getCalls(timer));
             }
 
             reset();
diff --git a/src/com/persesgames/jogl/Util.java b/src/com/persesgames/jogl/Util.java
index eeda565..636a915 100644
--- a/src/com/persesgames/jogl/Util.java
+++ b/src/com/persesgames/jogl/Util.java
@@ -10,7 +10,7 @@ import java.io.InputStream;
  */
 public class Util {
 
-    public static String loadAsText(Class cls, String name) {
+    public static String loadAsText(Class<?> cls, String name) {
         byte [] buffer = new byte[1024];
         int nr;
         try (InputStream in  = cls.getResourceAsStream(name); ByteArrayOutputStream out = new ByteArrayOutputStream()) {
diff --git a/src/com/persesgames/jogl/explosion/ExplosionComputeHandler.java b/src/com/persesgames/jogl/explosion/ExplosionComputeHandler.java
index cf8ea34..da547b1 100644
--- a/src/com/persesgames/jogl/explosion/ExplosionComputeHandler.java
+++ b/src/com/persesgames/jogl/explosion/ExplosionComputeHandler.java
@@ -1,25 +1,24 @@
 package com.persesgames.jogl.explosion;
 
-import com.jogamp.common.nio.Buffers;
-import com.persesgames.jogl.shader.ComputeProgram;
-import com.persesgames.jogl.shader.ShaderProgram;
-import com.persesgames.jogl.Util;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+import java.util.Random;
 
 import javax.media.opengl.GL;
 import javax.media.opengl.GL2ES2;
 import javax.media.opengl.GL4;
-import java.nio.FloatBuffer;
-import java.nio.IntBuffer;
-import java.util.Random;
+
+import com.jogamp.common.nio.Buffers;
+import com.persesgames.jogl.Util;
+import com.persesgames.jogl.shader.ComputeProgram;
+import com.persesgames.jogl.shader.ShaderProgram;
 
 /**
  * Date: 1/15/14
  * Time: 8:23 PM
  */
 public class ExplosionComputeHandler {
-    private final static Logger logger = LoggerFactory.getLogger(ExplosionComputeHandler.class);
+    //private final static Logger logger = LoggerFactory.getLogger(ExplosionComputeHandler.class);
 
     private final static int EXPLOSION_PARTICLES        = 256;
     private final static int MAX_EXPLOSION_PARTICLES    = 250000;
diff --git a/src/com/persesgames/jogl/shader/Program.java b/src/com/persesgames/jogl/shader/Program.java
index 36e2a32..4bbadd8 100644
--- a/src/com/persesgames/jogl/shader/Program.java
+++ b/src/com/persesgames/jogl/shader/Program.java
@@ -1,13 +1,10 @@
 package com.persesgames.jogl.shader;
 
-import com.persesgames.jogl.Renderer;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import javax.media.opengl.GL2ES2;
 import java.util.HashMap;
 import java.util.Map;
 
+import javax.media.opengl.GL2ES2;
+
 public abstract class Program {
 
     protected GL2ES2              gl;