Fix spelling and missing @OverRide annotations (#179)

Author: checketts

simpleclient/src/main/java/io/prometheus/client/Collector.java

@@ -138,7 +138,7 @@ public interface Describable {
      *
      *  Usually custom collectors do not have to implement Describable. If
      *  Describable is not implemented and the CollectorRegistry was created
-     *  with auto desribe enabled (which is the case for the default registry)
+     *  with auto describe enabled (which is the case for the default registry)
      *  then {@link collect} will be called at registration time instead of
      *  describe. If this could cause problems, either implement a proper
      *  describe, or if that's not practical have describe return an empty

simpleclient/src/main/java/io/prometheus/client/Counter.java

@@ -61,7 +61,7 @@
  *   }
  * }
  * </pre>
- * These can be aggregated and processed together much more easily in the Promtheus 
+ * These can be aggregated and processed together much more easily in the Prometheus
  * server than individual metrics for each labelset.
  */
 public class Counter extends SimpleCollector<Counter.Child> implements Collector.Describable {
@@ -149,6 +149,7 @@ public List<MetricFamilySamples> collect() {
     return mfsList;
   }
 
+  @Override
   public List<MetricFamilySamples> describe() {
     List<MetricFamilySamples> mfsList = new ArrayList<MetricFamilySamples>();
     mfsList.add(new CounterMetricFamily(fullname, help, labelNames));

simpleclient/src/main/java/io/prometheus/client/Gauge.java

@@ -254,6 +254,7 @@ public List<MetricFamilySamples> collect() {
     return mfsList;
   }
 
+  @Override
   public List<MetricFamilySamples> describe() {
     List<MetricFamilySamples> mfsList = new ArrayList<MetricFamilySamples>();
     mfsList.add(new GaugeMetricFamily(fullname, help, labelNames));

simpleclient/src/main/java/io/prometheus/client/Histogram.java

@@ -269,6 +269,7 @@ public List<MetricFamilySamples> collect() {
     return mfsList;
   }
 
+  @Override
   public List<MetricFamilySamples> describe() {
     List<MetricFamilySamples> mfsList = new ArrayList<MetricFamilySamples>();
     mfsList.add(new MetricFamilySamples(fullname, Type.HISTOGRAM, help, new ArrayList<MetricFamilySamples.Sample>()));

simpleclient/src/main/java/io/prometheus/client/SimpleCollector.java

@@ -11,7 +11,7 @@
  * This class handles common initialization and label logic for the standard metrics.
  * You should never subclass this class.
  * <p>
- * <h2>Initilization</h2>
+ * <h2>Initialization</h2>
  * After calling build() on a subclass, {@link Builder#name(String) name},
  * {@link SimpleCollector.Builder#help(String) help},
  * {@link SimpleCollector.Builder#labelNames(String...) labelNames},
@@ -26,7 +26,7 @@
  * <h2>Labels</h2>
  * {@link SimpleCollector.Builder#labelNames labelNames} specifies which (if any) labels the metrics will have, and 
  * {@link #labels} returns the Child of the metric that represents that particular set of labels.
- * {@link Gauge}, {@link Counter} and {@link Summary} all offer convienence methods to avoid needing to call
+ * {@link Gauge}, {@link Counter} and {@link Summary} all offer convenience methods to avoid needing to call
  * {@link #labels} for metrics with no labels.
  * <p>
  * {@link #remove} and {@link #clear} can be used to remove children.
@@ -50,7 +50,7 @@ public abstract class SimpleCollector<Child> extends Collector {
   protected final String help;
   protected final List<String> labelNames;
 
-  protected final ConcurrentMap<List<String>, Child> children = new ConcurrentHashMap<List<String>, Child>();;
+  protected final ConcurrentMap<List<String>, Child> children = new ConcurrentHashMap<List<String>, Child>();
   protected Child noLabelsChild;
 
   /**
@@ -100,7 +100,7 @@ public void clear() {
    * Initialize the child with no labels.
    */
   protected void initializeNoLabelsChild() {
-    // Initlize metric if it has no labels.
+    // Initialize metric if it has no labels.
     if (labelNames.size() == 0) {
       noLabelsChild = labels();
     }

simpleclient/src/main/java/io/prometheus/client/Summary.java

@@ -283,6 +283,7 @@ public List<MetricFamilySamples> collect() {
     return mfsList;
   }
 
+  @Override
   public List<MetricFamilySamples> describe() {
     List<MetricFamilySamples> mfsList = new ArrayList<MetricFamilySamples>();
     mfsList.add(new SummaryMetricFamily(fullname, help, labelNames));

simpleclient_dropwizard/src/main/java/io/prometheus/client/dropwizard/DropwizardExports.java

@@ -147,6 +147,7 @@ public List<MetricFamilySamples> collect() {
         return mfSamples;
     }
 
+    @Override
     public List<MetricFamilySamples> describe() {
       return new ArrayList<MetricFamilySamples>();
     }

simpleclient_jetty/src/main/java/io/prometheus/client/jetty/JettyStatisticsCollector.java

@@ -9,7 +9,7 @@
 import java.util.List;
 
 /**
- * Collect metrics from jettty's org.eclipse.jetty.server.handler.StatisticsHandler.
+ * Collect metrics from jetty's org.eclipse.jetty.server.handler.StatisticsHandler.
  * <p>
  * <pre>{@code
  * Server server = new Server(0);

simpleclient_pushgateway/src/test/java/io/prometheus/client/exporter/PushGatewayTest.java

@@ -6,7 +6,7 @@
 
 import io.prometheus.client.CollectorRegistry;
 import io.prometheus.client.Gauge;
-import java.io.IOException;;
+import java.io.IOException;
 import java.util.TreeMap;
 import java.util.Map;
 import org.junit.Assert;

simpleclient_spring_boot/src/main/java/io/prometheus/client/spring/boot/SpringBootMetricsCollector.java

@@ -47,6 +47,7 @@ public List<MetricFamilySamples> collect() {
     return samples;
   }
 
+  @Override
   public List<MetricFamilySamples> describe() {
     return new ArrayList<MetricFamilySamples>();
   }